【课后练习】Unit 3 Times change！Period 2（含答案与解析）

中小学教育资源及组卷应用平台
Unit 3　Times change！
Period 2
维度一　词形转换和动词的形式变换(用所给词的正确形式填空)
1．The teacher said it once again, (emphasise) its importance.
2．In spite of difficulties, the mayor never abandoned (reform) education system in our city.
3．He wanted to look for (occupy) suited to his abilities.
4．(2018·江苏卷)The (economy) impact of the arts is often overlooked and badly judged.
5．We have made great achievements in (socialism) construction.
维度二　固定用法和搭配(在空白处填入一个适当的单词或括号内单词的正确形式)
1．My clock (repair) by me when she knocked at the door.
2．As far as I'm concerned, I would like to say I am not favor of the plan.
3．(2019·浙江卷6月)Both my parents had a great influence my choice of work, instead of trying to pick out a job for me, they helped me learn those things that led me to it.
4．(2020·浙江卷7月)These lights, known adaptive signals，have led to significant declines in both the trouble and cost of travels between work and home.
5．The fats in fish are thought to help prevent heart disease. But seems that many people don't cook fish at home.
6．By chance, he found the place his brother had hidden the treasure.
维度三　完成句子/句型转换/一句多译
1．这个议题昨天的这个时候正在被公司的经理们讨论。
at this moment yesterday by the company's managers.
2．据说他的车上个周五正在修理厂被修。
It is said that last Friday in the garage.
3．In the passage, the author emphasised the importance of small and ordinary work.
→In the passage, the author small and ordinary work.
4．昨天晚上他没有住在我房间里，我的房间正在修缮。
①He didn't stay in my room last night because ．
②He didn't stay in my room last night because ．
维度四　书法与写作
请临摹之后再利用课余时间背诵。
提醒：①每个字母圆润饱满，压线书写；②宜用0.5或0.7 mm中性笔。
Ⅰ.阅读理解
A
Have you ever experienced such an annoying thing as it took so long to open a web page You're watching stops every few minutes, which ruined your internet experience. But it could be a thing of the past. On June 3, the Ministry of Industry and Information Technology announced that China would issue licenses for the commercialization of 5G. It means major telecom carriers will start to provide 5G services.
The “G” in “5G” refers to the generation of mobile network technologies. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the internet, and 4G made all of these things faster.
Now 5G promises much faster data download and upload speeds, and more stable connections. This means that you will be able to download an entire HD movie in seconds and only experience a short delay between sending and receiving data. For example, when you have a video chat with your friend, there is generally a 100 to 200 milliseconds (毫秒) delay with 4G, but 5G will reduce the delay to 1 millisecond or less, which is almost real time.
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely, as they will be able to communicate in real time and avoid potential dangers. Meanwhile, 5G enabled wearable devices will keep doctors constantly updated on the health status of their patients and warn them immediately if there's something wrong. Besides, VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
Though 5G will make our lives more convenient, it will not be perfect. For one thing, 5G will not “travel” far. On 4 networks, you can be 10 kilometers away from the nearest transmission (传输) base and barely lose signal. But 5G will only cover about 300 meters, meaning we will need more transmitters so that we can get signals. And in order to use 5G, we will have to buy new products specially designed for 5G that are currently expensive.
1．What is the function of the first paragraph
A．To provide a background of the topic.
B．To offer basic knowledge of the topic.
C．To use an example to support the topic.
D．To draw readers' attention to the topic.
2．According to the passage, what is likely to happen to our life with 5G
A．Doctors can treat more patients.
B．No drivers are needed in the near future.
C．Many advanced technologies will be further improved.
D．Children will hate playing VR games in the real world.
3．What can be found when 5G is compared with 4G
A．4G covers smaller areas.
B．4G needs more transmitters.
C．5G signals can travel farther.
D．5G costs higher in early stage.
4．What is the text mainly about
A．The development of 5G.
B．Challenges that 5G will face.
C．Benefits that people will get from 5G.
D．The difference that 5G will make to our lives.
B
Now anyone can pretend to be Spider Man by simply wearing a suit that lets you feel how close you are to a nearby object. It can even let the wearer control with their eyes closed.
The suit, called SpiderSense and built by Victor Mateevitsi of the University of Illinois in Chicago, has small robotic arms with microphones that send out and pick up ultrasonic reflections (超声波折射) from objects. When the ultrasound finds someone moving closer to the microphone, it “knows”. Seven arms are equipped across the suit to give the wearer as near to 360 degree ultrasound coverage as possible.
“When someone is hitting Spider Man, he feels it and can avoid it. Our suit is the same idea，” says Mateevitsi. “SpiderSense could help blind people find their way more easily.” Mateevitsi tested the suit out on students, getting them to stand outside on campus, eyes covered, and “feel” for attackers getting close.Each wearer had ninja(忍者) cardboard throwing stars to use whenever they sensed someone getting close. “Ninety five percent of the time they were able to sense someone coming near and throw the star at them，” says Mateevitsi.
“I'm very excited about this，” says Gershon Dublon of the Massachusetts Institute of Technology, who also works on other parts of the human body. “Mateevitsi's work is a step on the road to giving humans truly integrated extrasensory perception (超感知).
Mateevitsi wants to use the suit, or just a few sensors on the arms and back, to increase cyclists' awareness of other traffic on the road. SpiderSense is due to be presented at an international conference in Germany this year. The team now plans to add more sensors to the suit to increase its resolution. The team also plans to begin experiments on SpiderSense with blind people.
“We humans have the senses that we are born with and we can't extend them，” Mateevitsi says. “But there are some threats which are very deadly, but we can't sense them, like radiation(分辨率). Electronic sensors can feel those threats.”
5．How can SpiderSense help us in our daily life
A．Make 360 degree turns.
B．Fight back when attacked.
C．Warn its wearer of a coming danger.
D．Send out and receive text messages.
6．What can we infer from Mateevitsi's test of SpiderSense
A．It is of great fun.
B．It works well.
C．It reacts to blind people.
D．It is welcome on campus.
7．What can we learn about SpiderSense now
A．It helps cyclists on the road.
B．It is still a Spider Man idea.
C．It is at the development stage.
D．Its sensors send out radiation.
8．What type of text is this passage
A．A science report. B．A film review.
C．A medical record. D．A fairy tale.
Ⅱ.七选五
The thought often occurs to us that if only we had a little more time in the day, we could do all the things we want to do. 1.________， but by improving time management skills we can be more productive and have more time for ourselves and our hobbies.
2．________. It seems corny(老生常谈的), but actually putting down on paper the things we have to get done and watching the list grow shorter as the day progresses can be a wonderful way to improve our productivity. Schedule blocks of time for each task. If we have not given ourselves enough time to finish our tasks, but we must move on to something else, try to make up time with another task on our list. 3.________．
Mark our list in order of priority(优先).The most important tasks should be dealt with first. 4.________， but the point of improving time management skills is to get the important tasks taken care of regularly.
Be reasonable about what we can accomplish each day. 5.________. It may mean that we have to cut our television time in half, but our daily lists can become more manageable with time.
A．Make a to do list
B．Cut your larger projects into pieces
C．This way, we can get what we must complete done
D．You can improve your efficiency to get more things done
E．Unfortunately, we can't change those 24 hours in a day to 30
F．There are some things we may have to put off from one day to the other
G．We need to start by seeing when we have free time and could be more productive
Ⅲ.语法填空
C．V. Raman, a great Indian physicist, was born in 1888. His father was a lecturer in math and physics, so C．V. Raman was exposed 1.____________ scientific things from an early age. He 2.____________(attend) Presidency College in 1902, getting his BA in 1904 and MA in 1907. Though he was a brilliant student, there weren't many 3.____________(chance) for scientists in India at that time. 4.____________， after finishing his studies, he went to work for the Indian Finance Department and carried out his experimental research on acoustics (声学).
He 5.____________(offer) a professorship in physics at the University of Calcutta in 1917 and stayed for the next 15 years, 6.____________(achieve) fame for his research there. In 1930, he won the Nobel Prize for his work on the scattering of light. Raman found 7.____________ light passes through a transparent(透明的) sample of a substance, most of the light remains unchanged but a small part of it has 8.____________(differ) wavelengths. This later is 9.____________(know) as the Raman effect and is useful for physical and chemical 10.____________(analyse) of gases, liquids and solids, including biological tissue.
参考答案与解析
维度一　词形转换和动词的形式变换(用所给词的正确形式填空)
Emphasising
Reforming
Occupation
Economic
Socialist
维度二　固定用法和搭配(在空白处填入一个适当的单词或括号内单词的正确形式)
was_being_repaired
In
On
As
It
Where
维度三　完成句子/句型转换/一句多译
This_issue_was_being_discussed
his_car_was_being_repaired
put_emphasis_on
①it_was_being_repaired②it_was_under_repair
Ⅰ.阅读理解
A
【解题导语】　本文是一篇说明文。文章讲述了5G时代的到来即将给人们的生活带来的影响。
1.D　解析：推理判断题。根据第一段中的“Have you ever experienced such an annoying thing as it took so long to open a web page You're watching stops every few minutes”可知，第一段用打开网页时间长且卡顿的例子来吸引读者并引出主题。故选D。
2.C　解析：推理判断题。根据第四段中的“With a 5G network, the short delay...The short delay of 5G will make the games feel even more real.”可知，5G使无人汽车更安全；医生更精准获取病人的病情；VR游戏玩起来更逼真。所有这些都得益于5G传输速度的极大提高。由此可推知，5G使许多先进技术得到进一步优化。故选C。
3.D　解析：推理判断题。根据最后一段中的“And in order to use 5G, we will have to buy new products specially designed for 5G that are currently expensive.”可知，为了使用5G，目前需要购买价格昂贵的与之配套的新产品。由此可推知，早期使用5G的成本会比较高。故选D。
4.D　解析：主旨大意题。通读全文可知，文章从一个现象引出对于5G的讨论，介绍了5G的优势和早期存在的缺陷，讲述了5G将给人们生活带来的影响。D项“5G对我们生活的影响”符合文章主要内容。故选D。
【解题导语】　本文是一篇说明文。文章主要介绍了一种被称为SpiderSense的宇航服，它是由芝加哥伊利诺斯大学的马特维茨制造的，它有一个带有麦克风的小型机械手臂，可以发出并接收物体的超声波反射。
5.C　解析：推理判断题。根据文章第三段中的“‘When someone is hitting Spider Man, he feels it and can avoid it. Our suit is the same idea，’ says Mateevitsi.(‘当有人打蜘蛛侠时，他能感觉到它，并能避开它。我们的设计理念是一样的，’马特维茨说)”可推知，SpiderSense会警告佩戴者即将到来的危险。故选C。
6.B　解析：推理判断题。根据文章第三段中的“‘Ninety five percent of the time they were able to sense someone coming near and throw the star at them，’ says Mateevitsi.(‘95%的情况下，他们能够感觉到有人靠近。这时他们把星星扔向他们，’马特维茨说)”可推知，SpiderSense工作得非常好。故选B。
7.C　解析：推理判断题。根据文章倒数第二段中的“SpiderSense is due to be presented at...on SpiderSense with blind people.(今年，SpiderSense将在德国的一个国际会议上亮相。该团队现在计划在宇航服上增加更多的传感器，以提高它的分辨率。该团队还计划在盲人身上进行SpiderSense实验)”可知，它正处于发展阶段。故选C。
8.A　解析：推理判断题。根据文章第一段“Now anyone can pretend to be Spider Man...with their eyes closed.(现在任何人都可以假装自己是蜘蛛侠，只要穿上一套衣服，让你感觉自己离附近的物体有多近。它甚至可以让佩戴者闭上眼睛进行控制)”可知，文章主要介绍了一种被称为SpiderSense的宇航服。由此可推知，文章可能来自一个科学报告。故选A。
Ⅱ.七选五
【解题导语】　本文是一篇说明文。我们经常会想到，如果一天中我们只要多一点时间，我们就可以做所有我们想做的事情。不幸的是，我们不能把一天的24小时改为30小时，文章主要介绍了一些有助于提高时间管理技能的建议。
1．E　解析：根据上文可知，本句承接上文说明我们并不能把一天的24小时改成30个小时，同时为引入主题做好铺垫。故E选项“不幸的是，我们不能把一天的24小时改为30小时”符合上下文语境。故选E。
2．A　解析：根据后文可知，本段是在说明要列出待办事项清单，来提高效率。故A选项“列一个待办事项清单”符合上下文语境。故选A。
3．C　解析：结合上文可知，本句承接上文说明这种为每项任务安排一定的时间块的做法的结果是，可以完成我们必须完成的事情。故C选项“这样，我们就可以完成我们必须完成的事情”符合上下文语境。故选C。
4．F　解析：结合上文可知，最重要的事情要优先处理，而有一些事情则可以推一推再做。故F选项“有些事情我们可能要从一天拖到另一天”符合上下文语境。故选F。
5．G　解析：根据后文可知，本句是在建议读者弄清楚自己什么时候有空闲时间、什么时候更高效。故G选项“我们需要先看看我们什么时候有空，什么时候可以更高效”符合上下文语境。故选G。
Ⅲ.语法填空
【解题导语】　本文是一篇记叙文。文章主要记叙了印度伟大的科学家拉曼的个人经历和成就。
1．to　解析：考查固定短语。句意：他的父亲是一名数学和物理讲师，所以拉曼从小就接触科学知识。根据句意表示“接触到”短语为be exposed to。故填to。
2．attended　解析：考查动词时态。句意：他于1902年进入总统学院学习，1904年获得学士学位，1907年获得文学硕士学位。根据时间状语in 1902，可知用一般过去时。故填attended。
3．chances　解析：考查名词的数。句意：虽然他是一个优秀的学生，但当时印度的科学家并没有很多机会。chance为可数名词，由many修饰应用复数。故填chances。
4．Therefore　解析：考查副词。句意：因此，在完成学业后，他去了印度财政部工作，并进行了声学实验研究。根据前后文语境可知前后是因果关系，且由逗号隔开，应用副词therefore，句首单词首字母要大写。故填Therefore。
5．was offered　解析：考查动词的时态、语态和主谓一致。句意：1917年，他在加尔各答大学获得物理学教授的职位，并在那里待了15年，因在那里的研究而声名鹊起。根据时间状语in 1917，可知用一般过去时，且主语与谓语动词构成被动关系，故应用一般过去时的被动语态。主语为he，谓语动词用单数。故填was offered。
6．achieving　解析：考查非谓语动词。句意：1917年，他在加尔各答大学获得物理学教授的职位，并在那里待了15年，因在那里的研究而声名鹊起。分析句子结构可知achieve在句中应用非谓语动词形式，且与逻辑主语he构成主动关系，所以用现在分词作状语。故填achieving。
7．when　解析：考查状语从句。句意：拉曼发现，当光穿过一种物质的透明样本时，大部分光保持不变，但其中一小部分具有不同的波长。引导时间状语从句，表示“当……的时候”应用when。故填when。
8．different　解析：考查形容词。句意：拉曼发现，当光穿过一种物质的透明样本时，大部分光保持不变，但其中一小部分具有不同的波长。修饰名词wavelengths，应用形容词different作定语。故填different。
9．known　解析：考查固定短语。句意：这种效应后来被称为拉曼效应，用于气体、液体和固体(包括生物组织)的物理和化学分析。结合句意表示“被称为……”短语为be known as。故填known。
10．analyses　解析：考查名词的数。句意：这种效应后来被称为拉曼效应，用于气体、液体和固体(包括生物组织)的物理和化学分析。作介词的宾语应用名词analysis，为可数名词，且结合语境可知表示不止一次分析，应用复数名词analyses，故填analyses。
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）
HYPERLINK "http://www.21cnjy.com/" 21世纪教育网(www.21cnjy.com)