中小学教育资源及组卷应用平台
班级 姓名 学号 分数 Unit 3 The world of science
（选拔卷·提升能力）
（时间：100分钟，满分：120分）
第I卷（选择题共85分）
第一部分：英语知识运用（共两节，满分55分）
第一节：单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. –Wow! You’ve got so many clothes.
--But _____ of them are in fashion now.
A. all B. both C. neither D. none
【答案】D
【解析】主要测试代词的代替。做这一类试 ( http: / / www.21cnjy.com )题的关键：注意上下文中的暗示。译文：------哇！你买了这么多衣服啊。----但是没有一件是现在流行的。从译文可知代替的应该是上文的‘这么多衣服’，再结合所给答案可知选择D.【出处：21教育名师】
2. It ______ have been Tom that parked the car here, as he is the only one with a car.
A. may B. can C. must D. should
【答案】C
【解析】主要测试情态动词的用法，另 ( http: / / www.21cnjy.com )外还兼顾测试虚拟语气。译文：一定是汤姆把车顶在这儿了，因为他是唯一有车的人。从译文可知句子中：as he is the only one with a car.其关键性作用。另外结合语境可知属于语气非常坚定的推测。故此选择C.
3. —Tom, you look very excited today.
—Yes. I ________ the warm sunlight and delicious food in Hainan at this time tomorrow.
A. will enjoy B. will be enjoying C. am enjoying D. have enjoyed
【答案】B
【解析】
【详解】考查动词时态。句意：—— ( http: / / www.21cnjy.com )汤姆，你今天看起来很兴奋啊。——是的。明天的这个时候我将正在海南享受着温暖的阳光和美味的食物。根据句子结构和意思可知，句子的时间状语是at this time tomorrow，表示“明天的这个时候”，所以谓语动词要用将来进行时。故选B。21·世纪*教育网
4. Sally’s never seen a play in the Shanghai Grand Theatre, ______
A. hasn’t she B. has she C. isn’t she D. is she
【答案】B
【解析】主要测试反意疑问句。由语境可知译文： ( http: / / www.21cnjy.com )萨利从来没在上海大剧院看过戏，对吗？从译文可知：sally's never seen 应该是has never seen 的缩写，故此选择has he 。
5. Through this act ( http: / / www.21cnjy.com )ivity, many students now understand what great difficulty their parents have had ________ them up.
A. raise B. raising C. raised D. to raise
【答案】B
【解析】
【详解】考查非谓语动词。句意 ( http: / / www.21cnjy.com )：通过这次活动，许多学生现在明白了他们的父母养育他们有多么大的困难。固定搭配：have difficulty (in) doing sth.“在做某事上有困难”，省略介词in时，现在分词作伴随状语。故选B。
6. Mary went to the box office at lunch time, but all the tickets ______ out.
A. would sell B. had sold C. have sold D. was selling
【答案】B
【解析】主要测试动词的时态。由语境可知译文： ( http: / / www.21cnjy.com )玛丽午饭时去了票房，但是票已经售完。由译文可知句子中两个动作‘去票房和票售完’存在先后之分：先售完，后去票房，故此选择的时态动作应该在：went 之前发生。
7. Their use ( http: / / www.21cnjy.com ) was limited by laws, the first of ________ dates back to the fourteenth century.
A. where B. which C. that D. when
【答案】B
【解析】
【详解】考查定语从句。句意 ( http: / / www.21cnjy.com )：他们的使用被法律限制了，最早的可以追溯到14世纪。根据句子结构和意思可知，这里考查非限制性定语从句。先行词是整个主句的内容“Their use was limited by laws”，在从句中做介词“of”的宾语，所以连词用关系代词which。故选B。
8. They pain ( http: / / www.21cnjy.com )ted their faces white, imitating their masters and ________them.
A. taking part in B. making fun of
C. having an effect on D. giving their lives to
【答案】B
【解析】
【详解】考查动词短语辨析。句意：他们把脸涂 ( http: / / www.21cnjy.com )成白色，模仿他们的主人并且戏弄他们。A.take part in 参与(某事)；参加(某活动）；B.make fun of 取笑，戏弄；C.have an effect on 对…有影响，对…起作用，产生效果；D.give life to 赋予……生命。根据句子结构和意思可知，他们把脸涂成白色就有搞笑的意味，所以是为了戏弄人才把脸涂成白色的。故选B。
9. As a new onli ( http: / / www.21cnjy.com )ne language, emojis have been helping people express their views in a more________way.
A. vivid B. obvious C. curious D. shallow
【答案】A
【解析】
【详解】考查形容词。句意：作为新的网络语言，表情符号一直在帮助人们用更加生动丰富的方式表达他
们的观点。A. vivid生动的 ( http: / / www.21cnjy.com )，（人的想像）丰富的；B.obvious明显的；C.curious求知欲强的；D.shallow浅的，肤浅的。根据句子结构和意思可知，这里需要形容词作定语，修饰后面的名词way，表情符号可以使表达更生动，丰富。故选A。
10. The Great Wall is _______ tourist attraction that millions of people pour in every year.
A. so a well-known ( http: / / www.21cnjy.com )B. a so well-known C. such well-known a D. such a well-known
【答案】D
【解析】主要测试名词前的修饰语。译文：长城是 ( http: / / www.21cnjy.com )如此注明的旅游景点以至于每年数以百万计的人去参观。再结合句子语境可知选择so 或such…that …结构，关键在于寻找中心词，该句子的中心词为attraction属于可数名词，故此选择such。
11. A small plane crashed into a hillside five miles east of the city, _____ all four people on board.
A. killed B. killing C. kills D. to kill
【答案】B
【解析】主要测试分词短语作状语。 ( http: / / www.21cnjy.com )由语境可知译文：一家小飞机撞到了城市东部五英里处一座小山边，结果飞机上四人全部遇难。从译文可知属于顺其自然的结果，故此选择现在分词killing。另外还应该注意答案：D ，to kill通常表示出乎意料的结果。例如：He hurried to the railway station to find the train has gone 。他匆忙赶到火车站，结果发现火车已经走了。（出乎意料）
12. You can’t borrow books from the school library _______ you get your student card.
A. before B. if C. while D. as
【答案】A
【解析】主要测试连词。由所给 ( http: / / www.21cnjy.com )答案可知测试的连接词。解此类试题的关键：主要区分四个连词的汉语意思。译文：你不能从学校图书馆借书，除非你有学生证。实际上可以翻译为：before的基本意思‘在…之前’，亦即在你有学生证之前，你不能从学校图书馆借书。
13. With the government’s aid, those ______ by the earthquake have moved to the new settlements.
A. affect B. affecting C. affected D. were affected
【答案】C
解析】主要测试分词短语作定语。 ( http: / / www.21cnjy.com )由语境可知译文：在政府的帮助下，那些受地震影响的人们已经搬进新的住宅。分析句子结构可知，句子主干为：those have moved to the settlements。其余的均做定语，其中those 和动词affect之间应该属于被动关系，故此选择affected。例如：Those invited to join the party have already arrived 。那些被邀请参加宴会的人已经到达。
14. Mozart’s birthplace and the house ______ he composed “The Magic Flute” are both museums now.【来源：21·世纪·教育·网】
A. where B. when C. there D. which
【答案】A
【解析】主要测试定语从句。由题干可知译文：莫 ( http: / / www.21cnjy.com )扎特的出生地以及他谱写‘魔笛’曲的房子现在成了两所博物馆。还是先找句子的主干：出生地和房子成了博物馆。其余的均是附加结构：定语、状语等。结合语境可知：he composed “The Magic Flute” 是用来修饰the house的，也就是the house 的定语，再结合所给答案可知选择where最佳。例如：The city where he was born has turned into a modern big town。它的出生地已经成了大都市。
15. Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
A. having held B. to hold C. holding D. hold
【答案】C
【解析】主要测试动词的固定搭 ( http: / / www.21cnjy.com )配。由语境可知译文：比尔提议举行个假期期间为上海世博会做些什么的会议。可以说此类试题主要测试平时的记忆：动词suggest + v-ing ，故此答案一目了然。
第二节：完形填空（共20小题；每小题2分，满分40分）
阅读下面短文，然后从A、B、C、D四个选项中, 选出最佳选项。
The most imp ( http: / / www.21cnjy.com )ortant lesson I learned in high school had nothing to do with maths or American history. It came at graduation，several minutes before I left Miramonte High School.
I was rather s ( http: / / www.21cnjy.com )hy back then，content to__41___around with my few friends and to concentrate on my___42___. I was doing so well that by the end of senior year I had perfect scores and enough___43___to go to college.
But my good record so ( http: / / www.21cnjy.com )on became a___44___to my well-being. In early June of senior year，the headmaster called me into his office. He asked me to give a leave-taking speech at graduation. I looked at him，my heart____45____fast. This was the___46___for my hard work？I said something，but not very clearly，and hurried away from the office.
I was___47___about the ( http: / / www.21cnjy.com ) decision，finally agreeing to compromise. I wasn’t the only speaker—I would____48____the honor with five other students. Still，it was doubtful whether the task was____49____me. How in the world would I give a speech to hundreds of people
Graduation d ( http: / / www.21cnjy.com )ay soon arrived and，as____50____，I was nervous. I’d been practicing my speech for days，and I had it____51____. But I had never been so____52____in my life. The first half hour of the ceremony passed，and then my____53____came. My name was announced. I managed to reach the platform without falling down. But within minutes，I finished my speech，____54____back to my seat and feeling unsatisfied with my performance.
Now I still ha ( http: / / www.21cnjy.com )ve the__55__of that speech. My voice trembled a little，but___56____it was clear and strong. I’m proud of that tape. I achieved something I’d never___57___ —I spoke in front of hundreds of people. __58___I didn’t realize it at the time，the successful completion of that speech gave me the___59___to participate in class at college，to give oral reports，and to eventually break free of my__60__.
I never would have ( http: / / www.21cnjy.com )chosen to give a speech at graduation. But I am glad I did. I know it may well turn out to be one of my shining moments.
41. A. hang B. look C. turn D. run
42. A. characters B. interests C. games D. subjects
43. A. money B. credits C. effort D. standards
44. A. luck B. benefit C. fear D. solution
45. A. burning B. breaking C. aching D. beating
46. A. punishment B. reward C. arrangement D. sympathy
47. A. doubtful B. optimistic C. generous D. hesitant
48. A. share B. bring C. spare D. supply
49. A. about B. for C. upon D. beyond
50. A. known B. hoped C. expected D. planned
51. A. thrown B. printed C. memorized D. complete
52. A. interested B. terrified C. excited D. disappointed
53. A. moment B. clay C. chance D. decision
54. A. passing B. handing C. heading D. returning
55. A. picture B. tape C. paper D. word
56. A. partially B. immediately C. frankly D. mostly
57. A. dreamed of B. suffered C. decided D. requested
58. A. Because B. When C. Although D. Unless
59. A. respect B. confidence C. freedom D. excuse
60. A. shyness B. pride C. stupidity D. courage
【答案】41. A 42. D ( http: / / www.21cnjy.com ) 43. B 44. C 45. D 46. B 47. D 48. A 49. D 50. C 51. C 52. B 53. A 54. C 55. B 56. D 57. A 58. C 59. B 60. A
【解析】
【分析】本文是一篇记叙文 ( http: / / www.21cnjy.com )。作者性格腼腆，不善交际。由于成绩好校长让作者在毕业典礼上演讲，虽然很紧张，但作者最终成功地完成了演讲，这给了作者自信，让作者在以后的学习生涯中敢于表现自己。
【41题】
考查动词词义辨析。句意：那时候我很害羞，满足 ( http: / / www.21cnjy.com )于和几个朋友一起闲逛，专注于我的学习。A. hang悬挂；B. look看；C. turn转向；D. run跑。hang around表示闲逛，因为毕业感到有一种被释放的感觉，所以很满意地到处闲逛。故选A项。
【42题】
考查名词词义辨析。句意：那时候 ( http: / / www.21cnjy.com )我很害羞，满足于和几个朋友一起闲逛，专注于我的功课。A. characters性格；B. interests兴趣；C. games游戏；D. subjects科目。作者是高中生，根据下文“doing so well.. . I had perfect scores”判断，作者专心于功课。故选D项。
【43题】
考查名词词义辨析。句意：我学得非常好， ( http: / / www.21cnjy.com )到了高中毕业那年，我有足够的学分去上大学。A. money金钱；B. credit学分；C. effort努力; D. standards标准。根据前文的perfect scores，此处应是足够的学分。故选B项。
【44题】
考查名词词义辨析。句意：但我的好成绩很快成 ( http: / / www.21cnjy.com )为我幸福的恐惧。A. luck运气；B. benefit利益；C. fear害怕；D. solution解决办法。下文说校长让作者在毕业典礼上演讲，作者很紧张，因此作者认为自己的好成绩变成了一种恐惧。故选C项。
【45题】
考查动词词义辨析。句意：我看向他 ( http: / / www.21cnjy.com )，我的心跳得快。A. burn燃烧；B. break打碎，打坏；C. Caching疼痛；D. beating打，跳动。根据句子的主语heart，此处应是跳动。beat指有规律地跳动。故选D项。
【46题】
考查名词词义辨析。句意：这是对我努力学习的奖 ( http: / / www.21cnjy.com )赏吗？A. punishment惩罚；B. reward奖赏；C. arrangement安排；D. sympathy同情。校长安排作者发表毕业演讲，应是对作者努力学习的奖赏。故选B项。21*cnjy*com
【47题】
考查形容词词义辨析。句意 ( http: / / www.21cnjy.com )：我对这个决定犹豫不决，最终同意妥协了。A. doubtful怀疑的；B. optimistic乐观的；C. generous慷慨的；D. hesitant犹豫不决的。根据前文的关键词not very clearly和下文的finally判断是犹豫不决。故选D项。
【48题】
考查动词词义辨析。句意: ( http: / / www.21cnjy.com )我不是唯一一个演讲者，我会和其他五个学生分享这份荣耀。A. share分享；B. bring带来；C. spare抽出；D. supply供应。根据下文的“with five other students”判断是分享，share sth. with sb. 和某人分享某事。故选A项。
【49题】
考查介词词义辨析。句意：这 ( http: / / www.21cnjy.com )项任务是否超越自己的能力仍然是有疑问的。A. about关于；B. for为了，因为；C. upon在……之上；D. beyond超过。根据空后的问句可知，作者怀疑这项任务是否超出自己的能力范围。故选D项。
【50题】
考查动词词义辨析。句意：很快毕业那天如期到来 ( http: / / www.21cnjy.com )。 A. known知道；B. hoped希望；C. expected期望；D. planned计划。as expected，作状语，意为“如期到来”。故选C项。
【51题】
考查动词词义辨析。句意：我练习了好几 ( http: / / www.21cnjy.com )天我的演讲，能够把它背下来了。A. throw扔；B. print印刷；C. memorize记住；D. complete完成。空前说作者练习了好几天，因此已经能够把演讲稿背下来了，故选C项。
【52题】
考查形容词词义辨析。句意：但是在生活中我 ( http: / / www.21cnjy.com )从来没有这么害怕过。A. interested感兴趣的；B. terrified感到害怕的；C. excited感到兴奋的；D. disappointed感到失望的。根据前文的nervous和fear可知，此处应是感到害怕。故选B项。
【53题】
考查名词词义辨析。句意：典礼的前半小 ( http: / / www.21cnjy.com )时过去了，然后我演讲的那一刻到来了。A. moment时刻；B. clay泥土，黏土；C. chance机会；D. decision决定。根据前文“毕业典礼进行到一半了”，应是“我演讲的那一刻到来了”。故选A项。【来源：21cnj*y.co*m】
【54题】
考查动词词义辨析。句意：我完成了我 ( http: / / www.21cnjy.com )的演讲，回到我的座位上。A. pass走过；B. hand递给；C. head朝特定方向行进；D. return归还。完成演讲之后朝着我的座位走去，所以是head。head back to回到，故选C项。
【55题】
考查名词词义辨析。句意：现在 ( http: / / www.21cnjy.com )我仍然有那次演讲的磁带。A. picture图画；B. tape磁带；C. paper纸；D. word单词，消息。根据下文的tape判断是磁带。故选B项。
【56题】
考查副词词义辨析。句意：我的声音是有一点抖 ( http: / / www.21cnjy.com )，但是大部分是清楚有力的。A. partially部分地；B. immediately立即；C. frankly坦白地，直率地；D. mostly大部分地。根据下文的“I’m proud of that tape. ”判断应是大部分都清楚。故选D项。
【57题】
考查动词词义辨析。句意： ( http: / / www.21cnjy.com )我实现了我从来不曾梦想过的事情。A. dream of梦想；B. suffer遭受，蒙受；C. decide决定；D. request要求。由achieve可知是实现了梦想。故选A项。
【58题】
考查连词词义辨析。句意: 尽 ( http: / / www.21cnjy.com )管当时我没有意识到，但那次的成功演讲给了我信心去参加大学里的课堂活动。A. because因为；B. when当……时候；C. although尽管；D. unless除非。由后文作者参加大学里的课堂活动可知此处表示让步。故选C项。
【59题】
考查名词词义辨析。句意：尽管当时我没有意识 ( http: / / www.21cnjy.com )到，但那次的成功演讲给了我信心去参加大学里的课堂活动。A. respect尊重；B. confidence信心；C. freedom自由；D. excuse借口。根据下文的“to participate in class at college，to give oral reports”可知，应该是那次演讲给了作者信心。故选B项。
【60题】
考查名词词义辨析。句意：并且最终克服了害 ( http: / / www.21cnjy.com )羞。 A. shyness害羞；B. pride骄傲；C. stupidity愚蠢；D. courage勇气。根据空前的“break free of”可知，那次演讲让作者克服了害羞。故选A项。
第二部分：阅读理解（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
A
Kids and science seem to be made for each other!
The basic science ( http: / / www.21cnjy.com ) is a combination of thought and experiment called the scientific method. It’s where you start with an idea, create a way to prove or disprove your idea, and show what you learned based on facts. Learning to follow this process helps you think logically (逻辑地) and carefully. These important thinking skills can be used in many areas of study. To give a child practice with these thinking skills is like giving vitamins (维生素) to a developing mind.
One of the greatest ( http: / / www.21cnjy.com ) things we can teach our children is to love learning. Learning science is a great way to do so. Children are easy to be interested in science. Because much of science is hands on, it attracts most children. Nothing makes a child sit up and take notice like the “WOW!” of a great science showing.21世纪教育网版权所有
Science opens doors t ( http: / / www.21cnjy.com )o many subjects at school. Building love for science can be helpful in other areas of study. For example, one cannot love science for very long without becoming good at its language—math! So science encourages children to study math. An interest in science is an interest in how things were once understood compared to how they are understood now. Thus studying science lends itself easily to studying history. And after you do an experiment, you need to write a lab report. Therefore, writing becomes an important part of science.
Science is the basic ( http: / / www.21cnjy.com )thing for much of our life. The science of farming shows how our food is produced; biomedical science keeps us healthy; even our beds these days are designed according to scientific facts. We almost eat, sleep and breathe with the help of science! When we prepare the next generation (一代) of voters, creators, and policy makers, it is important to make sure they are not only comfortable but also good at science.
1. According ( http: / / www.21cnjy.com ) to Paragraph 2, what does learning the scientific method mean to kids
A. Refusing any ideas that are not logical.
B. Helping them develop thinking skills.
C. Learning many areas of study.
D. Learning to do experiments.
2. Which of the following statements would the author agree with
A. Science is too difficult for children.
B. Children usually consider science boring.
C. Science could make children love learning.
D. Children who can't think carefully shouldn't learn science.
3. If a child works hard at science at school, he / she ________.
A. usually loses interest in other activities
B. usually has no time for other subjects
C. is usually bad at such subjects like history
D. is likely to learn many other subjects well
4. What is the text mainly about
A. Why science is important.
B. Why kids should learn science.
C. What kids should learn at school.
D. How kids can make use of science.
1.【答案】B
【解析】细节理解题。根据第二段的“L ( http: / / www.21cnjy.com )earning to follow this process helps you think logically（逻辑地） and carefully. These important thinking skills can be used in many areas of study…”可知，学习科学可以帮助孩子们培养好的思维方式。故选B项。
2.【答案】C
【解析】观点态度题。根据第三段 ( http: / / www.21cnjy.com )的“One of the greatest things we can teach our children is to love learning. Learning science is a great way to do so.”可知，作者认为学习科学可以让孩子们爱上学习。故选C项。
3.【答案】D
【解析】细节理解题。根据 ( http: / / www.21cnjy.com )第四段的“So science encourages children to study math… Therefore, writing becomes an important part of science.”可知，学好了科学，学好别的科目的可能性也会增大。故选D项。
4.【答案】B
【解析】主旨大意题。根据文章内容可知，本文主要讲述了小孩为什么需要学习科学。故选B项。
B
It was just a nor ( http: / / www.21cnjy.com )mal day for Ruth Miller, a 63-year-old woman, until everything went horribly wrong. She was walking to her car after shopping when the unthinkable happened.
Right as she was ( http: / / www.21cnjy.com )unlocking her car, a man quickly came up behind her and tried to wrestle her purse away. She was in shock. Luckily she remembered she had her Safe Personal Alarm (SPA) on her purse, and since she was too scared to scream for help, she quickly reached for the alarm and pulled the pin (保险栓). Immediately her SPA started just screaming. The man didn't know what to do! He froze for a second, and then ran away like a bat out of hell!
SPA is a safety de ( http: / / www.21cnjy.com )vice capable of creating a 125db sound that attracts attention and scares away potential attackers. To compare, it's the same volume as a military jet during take-off.
Paul Davidso ( http: / / www.21cnjy.com )n, the inventor of SPA, knows all too well the type of situation that Ruth found herself in. But that's not the only type of situation that SPA helps protect against. Parents can give it to their kids as an extra means of protection. Teenagers can use it so they can feel safe walking home. Women can know it's there when they have to use the parking lot at night. “My mother, who is 76 years old, carries it around in case she falls
and needs to ask peop ( http: / / www.21cnjy.com )le for help. I only wish I'd have thought of it earlier,” said Paul.
The police have been ( http: / / www.21cnjy.com ) recommending SPA since it first hit the market. In fact, since its launch, SPA has been in a state, shifting between in stock to sold out nearly every other week, and it's also got tons of loyal followers worldwide.
5.What does the unde ( http: / / www.21cnjy.com )rlined part “the unthinkable” in Paragraph 1 refer to
A.An attempted robbery. B.A wrestling match.
C.An angry argument. D.A car accident.
6.How did Ruth react to the unexpected situation
A.She fought violently. B.She froze in great fear.
C.She cried desperately for help. D.She sounded her safety device.
7.Why does Paul mention his mother
A.To imply the ( http: / / www.21cnjy.com ) elderly need more care. B.To suggest he cares about his mother.
C.To show SPA ( http: / / www.21cnjy.com )can be widely used. D.To make an advertisement for SPA.
8.What can be learned from the text
A.SPA is well recei ( http: / / www.21cnjy.com )ved in the market. B.People hesitate to pay for security.
C.SPA was sold ( http: / / www.21cnjy.com ) out in the first two weeks. D.SPA is not important in life.
【文章大意】 这是一篇说 ( http: / / www.21cnjy.com )明文。文章以Ruth差点被人抢劫为例子,介绍了SPA这种安全装置。它可以发出125分贝的声音,吸引注意力,吓跑潜在的攻击者。SPA可以广泛应用,而且非常受欢迎。
5.A 词义猜测题。根据后文“ ( http: / / www.21cnjy.com )Right as she was unlocking her car, a man quickly came up behind her and tried to wrestle her purse away…a bat out of hell!”可知,就在她打开车门的时候,一个男人迅速地从她后面过来,试图抢走她的钱包。她震惊了。后来Ruth按响了警报器,男人被吓跑了。由此可知,画线短语指的是“一次抢劫未遂”。故选A。
6.D 细节理解题。根据第二段中“Luck ( http: / / www.21cnjy.com )ily she remembered she had her Safe Personal Alarm (SPA) on her purse, and since she was too scared to scream for help, she quickly reached for the alarm and pulled the pin(保险栓).”可知,幸运的是,她记得她的钱包上有她的安全个人警报器,由于她太害怕了,不敢大声呼救,她迅速伸手去拿警报器,拔下了保险栓。由此可知,面对这个意外情况,Ruth按响了她的安全装置。故选D。
7.C 推理判断题。根据倒数第二段 ( http: / / www.21cnjy.com )“Parents can give it to their kids as an extra means of protection. Teenagers can use it so they can feel safe walking home. Women can know it's there when they have to use the parking lot at night.”可知,父母可以把它给孩子,作为额外的保护手段。青少年可以使用它,这样他们在回家的路上会感到安全。女士在晚上不得不使用停车场的时候知道它的存在也会感到安心。由此可推知,Paul提到他的母亲是为了说明SPA可以广泛应用。故选C。
8.A 推理判断题。根据最后一段中“I ( http: / / www.21cnjy.com )n fact, since its launch, SPA has been in a state, shifting between in stock to sold out nearly every other week, and it's also got tons of loyal followers worldwide.”可知,事实上,自推出以来,SPA一直处于一种几乎每隔一周就会换一次货状态,而且它在世界各地也有大量的忠实粉丝。由此推知,SPA在市场上很受欢迎。故选A。
C
Working on a far ( http: / / www.21cnjy.com )m and taking care of crops can be hot, time-consuming and difficult. Engineers have long wanted to build robots to lighten the load. But it has proved a difficult task. Robots that walk or roll along the ground can step on the easily damaged plants heavily. And they have to stop working when rain turns fields muddy. “Tarzan”, however, could deal with some of those challenges.
Jonathan Roger ( http: / / www.21cnjy.com )s is a robotics expert at the Georgia Institute of Technology in Atlanta. When it comes to a farm environment, he realized robots would face many problems. “Many robots tend to get twisted(拧) together or get stuck,”he says. What's more, he notes, “It's very hard to leave them out for long periods without a human helping them.”
What if the robots ( http: / / www.21cnjy.com ) could move above the crops Jonathan Rogers says, “The sloths(树懒)move from tree branch to tree branch to avoid having to walk around the forest floor.”Then his team set out to design a robot that could swing hand to hand along wires hung above the field. He named their invention Tarzan after the jungle-swinging character in a movie.
Tarzan is not ( http: / / www.21cnjy.com )the first swinging robot. Mark Spong, a robotics researcher at the University of Texas at Dallas notes that some teams have built robots that do gymnastics or copy mammals. But he says he admires Tarzan for its using swinging movement to save energy and the idea of building a wire structure to move around above crops.
Rogers first ( http: / / www.21cnjy.com )predicted that Tarzan could help farmers monitor crops with sensors (传感器) and cameras. But he also said future robots might take water to a particularly thirsty plant or fertilize one that needs nutritional support. And adding a third “hand”could allow such a robot to harvest fruits and vegetables. Finally the robot could move off the farm and into the city, helping deal with the traffic and security.
9. What worried the engineers when they built the farm robots
A.They took up too much space.
B.They made the farming process slow.
C.They had difficulty exploring in fields.
D.They caused certain damage to crops.
10. What does Jonathan Rogers think about most farm robots
A.They take much time to make.
B.They get out of date more easily.
C.They depend too much on people.
D.They get used to the environment slowly.
11.What attracts Mark Spong most about Tarzan
A.Its strong wings. B.Its low cost.
C.Its creative design. D.Its powerful engine.
12. How did Jonathan Rogers feel about Tarzan's future 21cnjy.com
A.It could be found everywhere.
B.It could be put into more practical uses.
C.It could be used to do all the farm work.
D.It could be popular with working people in cities.
【文章大意】 本文是一篇说明文。文章介绍 ( http: / / www.21cnjy.com )了一款可以减轻农场工作负担的机器人Tarzan。未来Tarzan可能会使用传感器和照相机监控农作物、把水带给特别缺水的植物、给需要营养支持的植物施肥或者采摘水果和蔬菜以及帮助应对交通和安全问题。
9.D 细节理解题。根据第一段 ( http: / / www.21cnjy.com )中的“Robots that walk or roll along the ground can step on the easily damaged plants heavily.”可知,沿着地面行走或滚动的机器人会严重踩踏容易损坏的植物。因此工程师在建造农场机器人时担心它们会对农作物造成一定的损害。故选D。
10.C 细节理解题。根据第二段 ( http: / / www.21cnjy.com )中的“…‘It's very hard to leave them out for long periods without a human helping them.’”可知,如果没有人类的帮助,很难让它们长时间独立地在农场工作。因此Jonathan Rogers认为大多数农场机器人在工作中很大程度上需要依赖于人。故选C。
11.C 推理判断题。根据第四段中的“But ( http: / / www.21cnjy.com ) he says he admires Tarzan for its using swinging movement to save energy and the idea of building a wire structure to move around above crops.”可知,Mark Spong赞扬Tarzan利用摇摆运动来节省能源以及建造丝网结构以在农作物上方移动的想法,这些特点是Tarzan所独有的。由此判断出Tarzan最吸引Mark Spong的是该款机器人的创意设计。故选C。
12.B 推理判断题。根据最后一段“Roge ( http: / / www.21cnjy.com )rs first predicted that Tarzan could help farmers monitor crops with sensors(传感器) and cameras…Finally the robot could move off the farm and into the city, helping deal with the traffic and security.”可推断出,在Jonathan Rogers看来Tarzan在将来会有更多的实际用途。故选B。
D
How can physicists change the world
The world is a c ( http: / / www.21cnjy.com )omplex system, full of limits and restrictions on what one can do. Physics is full of problems with closed systems, which have no or limited interaction with other systems. Operating within the limits of a system (or a model of a system) or pushing the limits of a system, is a physicist’s daily job.
The optimization of ou ( http: / / www.21cnjy.com )tcomes is a problem more focused on by applied physicists or engineers, but the theoretical framework for the analysis always comes from the basic laws of physics. The knowledge of those basic laws allows physicists to exercise great control over the creation of new materials and devices which directly affect human life, pushing the boundaries of what we can do.21教育网
For example, many bel ( http: / / www.21cnjy.com )ieved that the sky is the limit, but Sergey Korolev proved them wrong, by making space flight possible. He created generations of scientists who were motivated by travels to distant planets, and in fact inspired the foundation of Skoltech’s Space Science and Technology program. The ultimate dream of a physicist is to achieve exactly this—to push the boundaries of what is possible, and motivate others to do the same.
What is the future of physics
Multidiscipli ( http: / / www.21cnjy.com )nary research is believed to be the way to move forward. Physics itself is already a multidisciplinary science. If you doubt this, just consider for a moment biophysics, chemical physics and mathematical physics. Therefore, physicists can approach various problems from multiple directions.
Moreover, th ( http: / / www.21cnjy.com )inking outside the box is what physicists excel at, especially when they face real-world problems. Most of the people who solve the Schr dinger equation throw away solutions which hint at any deviations (偏离) from conventional understanding of matter, but back in 1928 Paul Dirac, thinking outside the box, predicted the existence of antielectrons. These were later discovered as particles and became known as positrons (正电子). Dirac’s portrait is now hung in Skoltech’s Nuclear Science and Technology cluster to remind people of the value of unconventional thinking.
Skoltech prov ( http: / / www.21cnjy.com )ides many opportunities to meet great people and to get engaged in many interesting activities. I hope to learn a great deal and gain new skills to affect what is happening around me. Physics will always be my friend in this journey. “Those who are crazy enough to believe they can change the world, will!”
13. Physicists change the world by ______.
A. opening the closed systems to interact with other systems
B. setting up the theoretical framework for the analysis
C. exercising great control over the basic knowledge
D. pushing the ( http: / / www.21cnjy.com )boundaries of what human beings can do
14. The author admires Sergey Korolev because he ______.
A. proved other scientists wrong about the sky
B. broke the limit and made Mars exploration possible
C. founded a space program and realized his dream
D. provided ( http: / / www.21cnjy.com )new possibilities and inspired others
15. Multidisciplinary research is believed to be the future of physics because ______.
A. it provides physicists with different perspectives
B. physics includes sciences like biology and chemistry
C. people don’t have doubts about its application
D. problems o ( http: / / www.21cnjy.com )utside the box can thus be approached
16. Which of the following statements is NOT true
A. Unconventional thinking can change our life.
B. Physicists are all crazy people.
C. The author thinks Skoltech is a great place for physics lovers.
D. Physicists should be able to think differently.
■ 13. D
考查点：细节题，考查文中具体信息。
解析：根据文中第二段第二句话“The kn ( http: / / www.21cnjy.com )owledge of those basic laws allows physicists to exercise great control over the creation of new materials and devices which directly affect human life, pushing the boundaries of what we can do.”可知，物理学家通过推动我们能力的极限来改变世界，故答案为D。
■ 14. D
考查点：细节题，考查文中具体信息。
解析：文中第三段主要介绍Ser ( http: / / www.21cnjy.com )gey Korolev在物理学上的新突破，最后一句总结本段内容，这是作者敬仰Sergey Korolev的原因———提供新的可能性并激励他人，故答案为D。
■ 15. A
考查点：细节题，考查文中具体信息。
解析：文中第五段主要讲Mu ( http: / / www.21cnjy.com )ltidisciplinary physics，根据最后一句“physicists can approach various problems from multiple directions.”故答案为A。21·cn·jy·com
■ 16. B
考查点：细节题，考查文中具体信息。
解析：文中最后一句话“P ( http: / / www.21cnjy.com )hysics will always be my friend in this journey. “Those who are crazy enough to believe they can change the world, will!””那些足够疯狂的人相信他们能改变世界，并不是物理学家都是疯狂的人，故答案为B。www.21-cn-jy.com
第II卷（共35分）
第三部分：写作
第一节：阅读表达（共5小题；每小题2分，满分10分）
阅读短文，按照题目要求用英语回答问题。
Alice Moore is ( http: / / www.21cnjy.com ) a teenager entrepreneur, who in May 2015 set up her business AilieCandy. By the time she was 13, her company was worth millions of dollars with the invention of a super-sweet treat that could save kids' teeth, instead of destroying them. 21教育名师原创作品
It all began when M ( http: / / www.21cnjy.com )oore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning, “Why can't I make a healthy candy that's good for my teeth so that my parents can't say no to it ” With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain.
With her dad's ( http: / / www.21cnjy.com ) permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria. 【版权所有：21教育】
Moore then use ( http: / / www.21cnjy.com )d her savings to get her business off the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moore's product — CanCandy.
As CanCandy's su ( http: / / www.21cnjy.com )ccess grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.
Meanwhile, with her pa ( http: / / www.21cnjy.com )rents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.
71. How did Moore react to her dad's warning (No more than 10 words)
72. What is special about CanCandy (No more than 10 words)
73. What does Moore expect from her business (No more than 15 words)
74. How do you und ( http: / / www.21cnjy.com )erstand the underlined part in the last paragraph (no more than 5 words)
75. How does Moore ( http: / / www.21cnjy.com )'s story inspire you to achieve success Put it in your own words. (No more than 20 words) 21*cnjy*com
71. She got around t ( http: / / www.21cnjy.com )he warning. /She desired to make a healthy candy. /She started her own candy company. /She tried to find a way out. （人称或时态错扣一分，其它答案不给分）
72. It uses natur ( http: / / www.21cnjy.com )al sweeteners, which can reduce oral bacteria. / It could save kids' teeth, instead of destroying them. /It is beneficial to dental health. / It is tooth-friendly. （人称或时态错扣一分）
73. To help other ( http: / / www.21cnjy.com )s find their smiles. / To have a clean mouth and a broad smile. / She hopes/expects that every kid can have a clean mouth and a broad smile. （人称或时态错扣一分）
74. There coul ( http: / / www.21cnjy.com )d be no limits. /Anything could be possible. （答出没有限制或一切皆有可能, 给2分，其它意思不给分）
75. (open) We sho ( http: / / www.21cnjy.com )uld have positive thinking and take actions to try what we think right, which can result in success.
Or: When we are faced ( http: / / www.21cnjy.com ) with problems, we should find a way out with our creative ideas.
Or: The author's ( http: / / www.21cnjy.com ) story tells me that I should think creatively and act out my ideas to achieve success in my life.
第二节：书面表达(满分25分)
假定你是李华,想邀请英国交换生David下周一参加你校举办的“科技节”,并观赏学生们的“科技小发明”。请给他写封邮件,内容包括:
1.写信意图;
2.活动时间和地点;
3.活动目的和内容。
注意:1.词数80左右;
2.可以适当增加细节,以使行文连贯;
3.开头和结尾已给出,但不计入总词数。
参考词汇:科技小发明 technology gadgets
Dear David,
I'm glad to invite you to the Science Festival
________________________________________________________________________________________________________________________________________________________________________________________________________________________
Looking forward to your reply and expecting your coming.2·1·c·n·j·y
Yours,
Li Hua
One possible version:
Dear David,
I'm glad to invite you ( http: / / www.21cnjy.com ) to the Science Festival to be held in our school next Monday to enjoy the students' technology gadgets. www-2-1-cnjy-com
The Science Festival ( http: / / www.21cnjy.com )is scheduled to take place on the playground from 8 am to 11 am, lasting three hours. Its purpose is to encourage us students to think creatively. At this festival, you can enjoy various gadgets invented by students. What's more, some excellent student inventors will introduce the functions of their technology gadgets and perform them on the spot, which I think will be the most exciting part.2-1-c-n-j-y
Looking forward to your reply and expecting your coming.
Yours,
Li Hua
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）
HYPERLINK "http://21世纪教育网(www.21cnjy.com)
" 21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
班级 姓名 学号 分数 Unit 3 The world of science
（选拔卷·提升能力）
（时间：100分钟，满分：120分）
第I卷（选择题共85分）
第一部分：英语知识运用（共两节，满分55分）
第一节：单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. –Wow! You’ve got so many clothes.
--But _____ of them are in fashion now.
A. all B. both C. neither D. none
2. It ______ have been Tom that parked the car here, as he is the only one with a car.
A. may B. can C. must D. should
3. —Tom, you look very excited today.
—Yes. I ________ the warm sunlight and delicious food in Hainan at this time tomorrow.
A. will enjoy B. will be enjoying C. am enjoying D. have enjoyed
4. Sally’s never seen a play in the Shanghai Grand Theatre, ______ 21教育网
A. hasn’t she B. has she C. isn’t she D. is she
5. Through this ( http: / / www.21cnjy.com )activity, many students now understand what great difficulty their parents have had ________ them up.21*cnjy*com
A. raise B. raising C. raised D. to raise
6. Mary went to the box office at lunch time, but all the tickets ______ out.
A. would sell B. had sold C. have sold D. was selling
7. Their use w ( http: / / www.21cnjy.com )as limited by laws, the first of ________ dates back to the fourteenth century.
A. where B. which C. that D. when
8. They painted the ( http: / / www.21cnjy.com )ir faces white, imitating their masters and ________them.
A. taking part in B. making fun of
C. having an effect on D. giving their lives to
9. As a new online la ( http: / / www.21cnjy.com )nguage, emojis have been helping people express their views in a more________way.2-1-c-n-j-y
A. vivid B. obvious C. curious D. shallow
10. The Great Wall is _______ tourist attraction that millions of people pour in every year.
A. so a well-known ( http: / / www.21cnjy.com ) B. a so well-known C. such well-known a D. such a well-known
11. A small plane crashed into a hillside five miles east of the city, _____ all four people on board.
A. killed B. killing C. kills D. to kill
12. You can’t borrow books from the school library _______ you get your student card.
A. before B. if C. while D. as
13. With the government’s aid, those ______ by the earthquake have moved to the new settlements.21cnjy.com
A. affect B. affecting C. affected D. were affected
14. Mozart’s birthplace and the house ______ he composed “The Magic Flute” are both museums now.
A. where B. when C. there D. which
15. Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
A. having held B. to hold C. holding D. hold
第二节：完形填空（共20小题；每小题2分，满分40分）
阅读下面短文，然后从A、B、C、D四个选项中, 选出最佳选项。
The most impor ( http: / / www.21cnjy.com )tant lesson I learned in high school had nothing to do with maths or American history. It came at graduation，several minutes before I left Miramonte High School.
I was rather shy back ( http: / / www.21cnjy.com ) then，content to__41___around with my few friends and to concentrate on my___42___. I was doing so well that by the end of senior year I had perfect scores and enough___43___to go to college. 【出处：21教育名师】
But my good record ( http: / / www.21cnjy.com )soon became a___44___to my well-being. In early June of senior year，the headmaster called me into his office. He asked me to give a leave-taking speech at graduation. I looked at him，my heart____45____fast. This was the___46___for my hard work？I said something，but not very clearly，and hurried away from the office.
I was___47___about the decision，finally agreeing to compromise. I wasn’t the only speaker—I would____48____the honor with five other students. Still，it was doubtful whether the task was____49____me. How in the world would I give a speech to hundreds of people
Graduation day soo ( http: / / www.21cnjy.com )n arrived and，as____50____，I was nervous. I’d been practicing my speech for days，and I had it____51____. But I had never been so____52____in my life. The first half hour of the ceremony passed，and then my____53____came. My name was announced. I managed to reach the platform without falling down. But within minutes，I finished my speech，____54____back to my seat and feeling unsatisfied with my performance.
Now I still have th ( http: / / www.21cnjy.com )e__55__of that speech. My voice trembled a little，but___56____it was clear and strong. I’m proud of that tape. I achieved something I’d never___57___ —I spoke in front of hundreds of people. __58___I didn’t realize it at the time，the successful completion of that speech gave me the___59___to participate in class at college，to give oral reports，and to eventually break free of my__60__.
I never would have ( http: / / www.21cnjy.com ) chosen to give a speech at graduation. But I am glad I did. I know it may well turn out to be one of my shining moments.
41. A. hang B. look C. turn D. run
42. A. characters B. interests C. games D. subjects
43. A. money B. credits C. effort D. standards
44. A. luck B. benefit C. fear D. solution
45. A. burning B. breaking C. aching D. beating
46. A. punishment B. reward C. arrangement D. sympathy
47. A. doubtful B. optimistic C. generous D. hesitant21世纪教育网版权所有
48. A. share B. bring C. spare D. supply
49. A. about B. for C. upon D. beyond
50. A. known B. hoped C. expected D. planned
51. A. thrown B. printed C. memorized D. complete
52. A. interested B. terrified C. excited D. disappointed
53. A. moment B. clay C. chance D. decision
54. A. passing B. handing C. heading D. returning
55. A. picture B. tape C. paper D. word
56. A. partially B. immediately C. frankly D. mostly
57. A. dreamed of B. suffered C. decided D. requested
58. A. Because B. When C. Although D. Unless
59. A. respect B. confidence C. freedom D. excuse
60. A. shyness B. pride C. stupidity D. courage
第二部分：阅读理解（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
A
Kids and science seem to be made for each other!
The basic scien ( http: / / www.21cnjy.com )ce is a combination of thought and experiment called the scientific method. It’s where you start with an idea, create a way to prove or disprove your idea, and show what you learned based on facts. Learning to follow this process helps you think logically (逻辑地) and carefully. These important thinking skills can be used in many areas of study. To give a child practice with these thinking skills is like giving vitamins (维生素) to a developing mind.
One of the greatest th ( http: / / www.21cnjy.com )ings we can teach our children is to love learning. Learning science is a great way to do so. Children are easy to be interested in science. Because much of science is hands on, it attracts most children. Nothing makes a child sit up and take notice like the “WOW!” of a great science showing.www.21-cn-jy.com
Science opens do ( http: / / www.21cnjy.com )ors to many subjects at school. Building love for science can be helpful in other areas of study. For example, one cannot love science for very long without becoming good at its language—math! So science encourages children to study math. An interest in science is an interest in how things were once understood compared to how they are understood now. Thus studying science lends itself easily to studying history. And after you do an experiment, you need to write a lab report. Therefore, writing becomes an important part of science.
Science is the basic t ( http: / / www.21cnjy.com )hing for much of our life. The science of farming shows how our food is produced; biomedical science keeps us healthy; even our beds these days are designed according to scientific facts. We almost eat, sleep and breathe with the help of science! When we prepare the next generation (一代) of voters, creators, and policy makers, it is important to make sure they are not only comfortable but also good at science.【来源：21·世纪·教育·网】
1. According to Pa ( http: / / www.21cnjy.com )ragraph 2, what does learning the scientific method mean to kids
A. Refusing any ideas that are not logical.
B. Helping them develop thinking skills.
C. Learning many areas of study.
D. Learning to do experiments.
2. Which of the following statements would the author agree with 【来源：21cnj*y.co*m】
A. Science is too difficult for children.
B. Children usually consider science boring.
C. Science could make children love learning.
D. Children who can't think carefully shouldn't learn science.【版权所有：21教育】
3. If a child works hard at science at school, he / she ________.
A. usually loses interest in other activities
B. usually has no time for other subjects
C. is usually bad at such subjects like history
D. is likely to learn many other subjects well
4. What is the text mainly about
A. Why science is important.
B. Why kids should learn science.
C. What kids should learn at school.
D. How kids can make use of science.
B
It was just a ( http: / / www.21cnjy.com ) normal day for Ruth Miller, a 63-year-old woman, until everything went horribly wrong. She was walking to her car after shopping when the unthinkable happened.
Right as she was ( http: / / www.21cnjy.com ) unlocking her car, a man quickly came up behind her and tried to wrestle her purse away. She was in shock. Luckily she remembered she had her Safe Personal Alarm (SPA) on her purse, and since she was too scared to scream for help, she quickly reached for the alarm and pulled the pin (保险栓). Immediately her SPA started just screaming. The man didn't know what to do! He froze for a second, and then ran away like a bat out of hell!
SPA is a safety dev ( http: / / www.21cnjy.com )ice capable of creating a 125db sound that attracts attention and scares away potential attackers. To compare, it's the same volume as a military jet during take-off.
Paul Davidson, ( http: / / www.21cnjy.com )the inventor of SPA, knows all too well the type of situation that Ruth found herself in. But that's not the only type of situation that SPA helps protect against. Parents can give it to their kids as an extra means of protection. Teenagers can use it so they can feel safe walking home. Women can know it's there when they have to use the parking lot at night. “My mother, who is 76 years old, carries it around in case she falls
and needs to ask p ( http: / / www.21cnjy.com )eople for help. I only wish I'd have thought of it earlier,” said Paul.
The police h ( http: / / www.21cnjy.com )ave been recommending SPA since it first hit the market. In fact, since its launch, SPA has been in a state, shifting between in stock to sold out nearly every other week, and it's also got tons of loyal followers worldwide.
5.What does the ( http: / / www.21cnjy.com ) underlined part “the unthinkable” in Paragraph 1 refer to
A.An attempted robbery. B.A wrestling match.
C.An angry argument. D.A car accident.
6.How did Ruth react to the unexpected situation
A.She fought violently. B.She froze in great fear.www-2-1-cnjy-com
C.She cried desperately for help. D.She sounded her safety device.
7.Why does Paul mention his mother
A.To imply the el ( http: / / www.21cnjy.com )derly need more care. B.To suggest he cares about his mother.
C.To show SPA can be w ( http: / / www.21cnjy.com )idely used. D.To make an advertisement for SPA.
8.What can be learned from the text
A.SPA is well receive ( http: / / www.21cnjy.com )d in the market. B.People hesitate to pay for security.
C.SPA was sold out in ( http: / / www.21cnjy.com )the first two weeks. D.SPA is not important in life.
C
Working on a far ( http: / / www.21cnjy.com )m and taking care of crops can be hot, time-consuming and difficult. Engineers have long wanted to build robots to lighten the load. But it has proved a difficult task. Robots that walk or roll along the ground can step on the easily damaged plants heavily. And they have to stop working when rain turns fields muddy. “Tarzan”, however, could deal with some of those challenges.21教育名师原创作品
Jonathan Roger ( http: / / www.21cnjy.com )s is a robotics expert at the Georgia Institute of Technology in Atlanta. When it comes to a farm environment, he realized robots would face many problems. “Many robots tend to get twisted(拧) together or get stuck,”he says. What's more, he notes, “It's very hard to leave them out for long periods without a human helping them.”
What if the rob ( http: / / www.21cnjy.com )ots could move above the crops Jonathan Rogers says, “The sloths(树懒)move from tree branch to tree branch to avoid having to walk around the forest floor.”Then his team set out to design a robot that could swing hand to hand along wires hung above the field. He named their invention Tarzan after the jungle-swinging character in a movie.
Tarzan is not t ( http: / / www.21cnjy.com )he first swinging robot. Mark Spong, a robotics researcher at the University of Texas at Dallas notes that some teams have built robots that do gymnastics or copy mammals. But he says he admires Tarzan for its using swinging movement to save energy and the idea of building a wire structure to move around above crops.
Rogers first pred ( http: / / www.21cnjy.com )icted that Tarzan could help farmers monitor crops with sensors (传感器) and cameras. But he also said future robots might take water to a particularly thirsty plant or fertilize one that needs nutritional support. And adding a third “hand”could allow such a robot to harvest fruits and vegetables. Finally the robot could move off the farm and into the city, helping deal with the traffic and security.
9. What worried the engineers when they built the farm robots
A.They took up too much space.
B.They made the farming process slow.
C.They had difficulty exploring in fields.
D.They caused certain damage to crops.
10. What does Jonathan Rogers think about most farm robots 21·世纪*教育网
A.They take much time to make.
B.They get out of date more easily.
C.They depend too much on people.
D.They get used to the environment slowly.
11.What attracts Mark Spong most about Tarzan
A.Its strong wings. B.Its low cost.
C.Its creative design. D.Its powerful engine.
12. How did Jonathan Rogers feel about Tarzan's future 2·1·c·n·j·y
A.It could be found everywhere.
B.It could be put into more practical uses.
C.It could be used to do all the farm work.
D.It could be popular with working people in cities.
D
How can physicists change the world
The world is a complex ( http: / / www.21cnjy.com ) system, full of limits and restrictions on what one can do. Physics is full of problems with closed systems, which have no or limited interaction with other systems. Operating within the limits of a system (or a model of a system) or pushing the limits of a system, is a physicist’s daily job.
The optimization ( http: / / www.21cnjy.com )of outcomes is a problem more focused on by applied physicists or engineers, but the theoretical framework for the analysis always comes from the basic laws of physics. The knowledge of those basic laws allows physicists to exercise great control over the creation of new materials and devices which directly affect human life, pushing the boundaries of what we can do.
For example, many be ( http: / / www.21cnjy.com )lieved that the sky is the limit, but Sergey Korolev proved them wrong, by making space flight possible. He created generations of scientists who were motivated by travels to distant planets, and in fact inspired the foundation of Skoltech’s Space Science and Technology program. The ultimate dream of a physicist is to achieve exactly this—to push the boundaries of what is possible, and motivate others to do the same.
What is the future of physics
Multidisciplinary re ( http: / / www.21cnjy.com )search is believed to be the way to move forward. Physics itself is already a multidisciplinary science. If you doubt this, just consider for a moment biophysics, chemical physics and mathematical physics. Therefore, physicists can approach various problems from multiple directions.
Moreover, thinkin ( http: / / www.21cnjy.com )g outside the box is what physicists excel at, especially when they face real-world problems. Most of the people who solve the Schr dinger equation throw away solutions which hint at any deviations (偏离) from conventional understanding of matter, but back in 1928 Paul Dirac, thinking outside the box, predicted the existence of antielectrons. These were later discovered as particles and became known as positrons (正电子). Dirac’s portrait is now hung in Skoltech’s Nuclear Science and Technology cluster to remind people of the value of unconventional thinking.
Skoltech provides man ( http: / / www.21cnjy.com )y opportunities to meet great people and to get engaged in many interesting activities. I hope to learn a great deal and gain new skills to affect what is happening around me. Physics will always be my friend in this journey. “Those who are crazy enough to believe they can change the world, will!”
13. Physicists change the world by ______.
A. opening the closed systems to interact with other systems
B. setting up the theoretical framework for the analysis
C. exercising great control over the basic knowledge
D. pushing the bo ( http: / / www.21cnjy.com )undaries of what human beings can do
14. The author admires Sergey Korolev because he ______.
A. proved other scientists wrong about the sky
B. broke the limit and made Mars exploration possible
C. founded a space program and realized his dream
D. provided new possib ( http: / / www.21cnjy.com )ilities and inspired others
15. Multidisciplinary research is believed to be the future of physics because ______.
A. it provides physicists with different perspectives
B. physics includes sciences like biology and chemistry
C. people don’t have doubts about its application
D. problems outside t ( http: / / www.21cnjy.com )he box can thus be approached
16. Which of the following statements is NOT true
A. Unconventional thinking can change our life.
B. Physicists are all crazy people.
C. The author thinks Skoltech is a great place for physics lovers.
D. Physicists should be able to think differently.
第II卷（共35分）
第三部分：写作
第一节：阅读表达（共5小题；每小题2分，满分10分）
阅读短文，按照题目要求用英语回答问题。
Alice Moore is a teena ( http: / / www.21cnjy.com )ger entrepreneur, who in May 2015 set up her business AilieCandy. By the time she was 13, her company was worth millions of dollars with the invention of a super-sweet treat that could save kids' teeth, instead of destroying them. 21·cn·jy·com
It all began wh ( http: / / www.21cnjy.com )en Moore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning, “Why can't I make a healthy candy that's good for my teeth so that my parents can't say no to it ” With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain.
With her dad' ( http: / / www.21cnjy.com )s permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria.
Moore then used ( http: / / www.21cnjy.com ) her savings to get her business off the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moore's product — CanCandy.
As CanCandy's succe ( http: / / www.21cnjy.com )ss grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.
Meanwhile, with her ( http: / / www.21cnjy.com )parents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.
71. How did Moore react to her dad's warning (No more than 10 words)
72. What is special about CanCandy (No more than 10 words)
73. What does Moore expect from her business (No more than 15 words)
74. How do you unde ( http: / / www.21cnjy.com )rstand the underlined part in the last paragraph (no more than 5 words)
75. How does ( http: / / www.21cnjy.com ) Moore's story inspire you to achieve success Put it in your own words. (No more than 20 words)
第二节：书面表达(满分25分)
假定你是李华,想邀请英国交换生David下周一参加你校举办的“科技节”,并观赏学生们的“科技小发明”。请给他写封邮件,内容包括:21*cnjy*com
1.写信意图;
2.活动时间和地点;
3.活动目的和内容。
注意:1.词数80左右;
2.可以适当增加细节,以使行文连贯;
3.开头和结尾已给出,但不计入总词数。
参考词汇:科技小发明 technology gadgets
Dear David,
I'm glad to invite you to the Science Festival
________________________________________________________________________________________________________________________________________________________________________________________________________________________
Looking forward to your reply and expecting your coming.
Yours,
Li Hua
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