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Unit 2 课时跟踪检测(二)
Warming Up & Reading — Language Points
Ⅰ.单词拼写或用所给单词的正确形式填空
1．If you want to master English, to have a large vocabulary(词汇) is necessary.
2．The ship sank on its long voyage (航行) to Europe.
3．Do you want to take the elevator (电梯) or use the stairs
4．In America a flat is called an apartment (公寓)．
5．His native (本国的，本族的) language is not Chinese but he can speak it well.
6．Having studied Chinese for two years, now she can speak it fluently (fluent)．
7．Actually (actual), he is an honest person, whom you can depend on.
8．I didn't like maths at the very start, but now my interest in it has been gradually (gradual) increasing.
9．One can travel there by ship or plane. Most people choose the latter (late)．
10．He officially (official) announced his retirement yesterday.
Ⅱ.选词填空
more than， be different from， communicate with， at the end of， because of， come up， be based on， at present， make good use of， such as
1．The World Climate Conference suggested that we (should)_make_good_use_of the renewable sources.
2．The old man believes a chance of getting rich may come_up to him soon.
3．As is known to all, theory is_based_on practice and in turn serves practice.
4．I like many English programmes, such_as Follow Me, Follow Me to Science.
5．At_present,_the global economy still faces severe challenges.
6．China Daily is more_than a newspaper. It can broaden our horizon.
7．Their flight was put off because_of the heavy fog.
8．Don't trust him. Usually what he has said is_different_from what he has done.
9．I suggest we should communicate_with our friends face to face instead of sending text messages.
10．At_the_end_of the street, a beautiful villa (别墅) came into sight.
Ⅲ.完成句子
1．We can't go to work because_of_this_heavy_rain.
因为这场大雨，我们不能去上班。
2．He came_up_with a good plan.
他提出了一个很好的计划。
3．How will_you_make_use_of the last month
你将怎样利用最后一个月的时间？
4．This film is_based_on a true story.
这部电影是以一个真实的故事为根据的。
5．Air is all around us, even_if/though we can't see it.
空气就在我们四周，即使我们看不见它。
Ⅳ.阅读理解
A
Advice to English learners
Learners of English, especially self taught learners may have trouble in understanding speeches by native speakers. The following ways might help improve their listening ability.
First of all, do things step by step. It is not good to listen to something beyond_your_level. Better choose a suitable course and start with the first book. Go on to the second book only after you are sure you understand the first one.
Secondly, stick to one course to study. Don't change books often. Never let your attention be attracted by another course just because it seems to be more “fashionable (时髦的)”．
Thirdly, listen to the English news programme over the radio from time to time. Better go through the news stories in the Chinese language newspaper first. That will make it easy for you to understand the English news on the radio.
Fourthly, if you have time, listen to some interesting stories in “Special English” from the VOA or other listening materials of the same level as that of your textbook.
语篇解读：本文主要向英语学习者提供了几条建议。
1．These are some pieces of advice to learners of English on how to ________.
A．improve their listening ability
B．read fast
C．write better English and read fast
D．speak correctly
解析：选A 细节理解题。由第一段最后一句可知。
2．If you want to understand the English news programme on the radio, you should ________.
A．read the Chinese language newspaper carefully
B．read again and again the Chinese language newspaper
C．go through the Chinese language newspaper
D．be able to recite the Chinese language newspaper
解析：选C 细节理解题。由第四段“Thirdly ...Better go through the news stories in the Chinese language newspaper first.”可知。
3．The underlined part“beyond your level”in Paragraph 2 means something ________.
A．easy for you
B．too difficult for you
C．not too easy and not too difficult for you
D．just all right for you
解析：选B 词义猜测题。由第二段可推知。
4．The author advised that once you have taken up a course, you should ________.
A．stick to it
B．begin with the last book
C．take up other courses if they are more fashionable
D．not do anything else
解析：选A 细节理解题。由第三段第一、二句“Secondly, stick to one course to study. Don't change books often.”可知。
B
American kids spend just minutes each day staying outdoors and seven hours parked in front of electronic screens.That's not healthy.And it's a big reason 1 in 3 US kids is overweight.
Kids in Parks, a program of outdoor family adventures, wants to change that.Kids can sign up for the free program and win prizes by visiting some of the program's 157 trails (路线)．Kids in Parks was started in 2008.Today it has trails in 10 states.
They're called track trails.Track stands for trails, ridges (山脊), activities and connections for Kids.
Aiden Buchanan signed up a few months ago and has been on seven track trails.
“It's a good exercise, and it's fun for the family to do together，” says Aiden, 8, who lives in Alexandria. “Sometimes we find live animals and it was easy to take pictures of them，” Aiden says.
Kids in Parks' Director Jason Urroz says kids have had more than 370,000 track adventures so far.More than 10 percent of those who sign up are first time hikers, and more than 40 percent return.
While Kids in Parks encourages kids to enjoy nature today, it's also looking at the bigger picture.Urroz says: “If we don't get kids connected now, in the future when they grow up, who's going to stand up and say these places are important — not only to our health but to the environment, clean water and clean air？”
语篇解读：孩子们户外活动少会引起诸多问题，因此一项家庭户外冒险活动被推出了。
5．Why are so many children overweight in the US
A．They eat too much meat and sugar while exercise little.
B．They eat junk food and drink coke too much.
C．They stay outdoors less while before electric screens more.
D．They have so much homework to do every day.
解析：选C 细节理解题。根据第一段内容可知，美国孩子每天只花几分钟待在户外，七小时停在电子屏幕前，这也是美国3个孩子中有1个超重的原因。故选C项。
6．Which of the following is TRUE according to the text
A．The Kids in Parks program is free.
B．The Kids in Parks started in 10 states.
C．Kids in Parks encourages kids to only enjoy nature.
D．Having been in Kids in Parks, few kids come again.
解析：选A 细节理解题。根据第二段中的“Kids can sign up for the free program ...”可知，Kids in Parks这个活动是免费的。故选A项。
7．What can we infer from Aiden's words
A．He was disappointed to sign up.
B．He hopes to be an environmental engineer.
C．He can't take pictures of live animals.
D．This program is worth signing up.
解析：选D 推理判断题。根据第五段中的“It's a good exercise, and it's fun for the family to do together”和“Sometimes we find live animals and it was easy to take pictures of them”可知，他很喜欢这个活动，觉得很有意义。所以可推知他觉得这个活动是值得报名参加的。故选D项。
8．What's the author's attitude to the Kids in Parks
A．Unconcerned. B．Supportive.
C．Disagreed. D．Critical.
解析：选B 观点态度题。根据全文内容可看出，Kids in Parks这个活动不仅对孩子自身的身心发展有很好的启发锻炼作用，对整个社会和自然环境也有帮助，可推知作者对这个活动持支持的态度。故选B项。
Ⅴ.阅读七选五
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
What will you do if you can't eat everything bought in the canteen __1__ According to a survey, what students waste every year could feed over 10 million people.
__2__According to Xinhua News Agency, the food wasted by Chinese people is about 50 million tons of grain every year, which could feed 200 million people.
Food waste, which has become a global issue, serves as a mirror that reflects various cultural and social issues in different countries. In the West, for instance, consumerism, the belief that it's good to use a lot of goods and services, is often to blame for food waste. __3__ Chinese people are well known for being hospitable and generous. Many even feel that they lose face if their guests have eaten all the food. On campus, a generation of single child is less aware of the food waste issue. Students nowadays are well protected by their families and hardly have any concept of how much toil (辛劳) others go through in order to provide them with the food they eat.
__4__ There are 925 million hungry people in the world. They don't have enough food to eat. And farmers work very hard to grow the crops. __5__ It's also important that everyone thinks about how they can do their bit to reduce food waste. Recently a campaign against food waste launched online in China might make you think twice about being so wasteful.
A．But canteen waste is merely the tip of the iceberg.
B．So we shouldn't waste our food.
C．Students can never realize the serious food waste situation.
D．Most of us would simply throw away any leftover food.
E．Students waste is extremely serious.
F．To reduce food waste is a big task, and it needs time.
G．China, in turn, features its own eating culture.
答案：1～5 DAGFB
Ⅵ.课时微写作(根据汉语提示完成小作文)
1．At_present (现在), English is becoming more and more important in our life, and 2.because_of (因为) that, many people are trying hard to learn English. But we must have met with several problems in learning English, 3.such_as (例如) vocabulary and grammar. Many people 4.came_up_with (提出) different methods to deal with them. 5.Actually (事实上), we, as beginners, can 6.make_use_of (利用) the following ones. First, learning English should 7.be_based_on (以……为基础) our textbook. Second, we should read more.8.Gradually (逐渐地), you will find you have fallen in love with English.PAGE
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Unit 2 课时跟踪检测(三)
Learning about Language & Using Language
Ⅰ.单词拼写或用所给单词的正确形式填空
1．Judging from his accent (口音), he must be from Australia.
2．What should I do when lightning (闪电) strikes me
3．Generally speaking, the eastern (东部的) part of China is more developed than the west.
4．At his request (请求), we delayed our performance.
5．Don't command (命令) others to do what they are unwilling to do.
6．Try to remember all the words and expressions (express) in this unit.
7．One of my classmates is from an African (Africa) country.
8．He walked along in the shadows, hoping no one would recognize (recognition) him.
9．I like all the seasons of the year, especially (especial) spring.
10．Although he is not from Spain, he has a good command of Spanish (Spain)．
Ⅱ.选词填空
believe it or not， from all over the world， play a n ... part in， the same ... as ...， take note of， build up
1．She plays_an active part_in all kinds of activities held by school.
2．Heat may travel in the_same manner as light does.
3．He tried to build_up his strength.
4．We should welcome friends from_all_over_the_world with a smile and be friendly to everyone.
5．Believe_it_or_not,_she can draw a strong bow.
6．Take_note_of what I say and do not forget it.
Ⅲ.完成句子
1．The meeting is_recognized_as/to_be a great success.
人们认为这次会议很成功。
2．I am writing to you to_request_you_to_help_me_find the case back.
我给您写信是想请求您帮我把箱子找回来。
3．There_is_no_such_thing_as a totally risk free industry.
完全没有风险的行业是不存在的。
4．I don't like living in big cities; it_is_because the air pollution is serious.
我不喜欢住在大城市，这是因为空气污染太严重了。
Ⅳ.完形填空
Throughout history, people have been interested in knowing how language first began, but no one knows exactly where or how this happened.__1__， we do know a lot about__2__， the languages of today and also the languages of __3__ times. There__4__ probably about three thousand languages in the world today. Chinese is the language__5__ the most speakers. English, Russian and Spanish are also spoken by many millions of people. __6__， some languages in the world have less than one hundred speakers.
There are several important__7__ of languages in the world. For example, most of the languages of__8__ are in one large family__9__ the Indo European language family. The original (最初的) language of this family was spoken about 4,500 years __10__. Many of the present languages of Europe and India are modern__11__ of the language of 4,500 years ago.
Languages are__12__changing. The English of today is very different__13__ the English of 500 years ago. In time some even__14__ completely. About 1,000 years ago __15__was a little known relative of German__16__ on one of the borders (边界) of Europe.
If a language has__17__ speakers or if it is very old, there may be__18__ in the way it is spoken in different areas.__19__， the language may have several dialects. Chinese is a good example of dialect differences. Chinese has been spoken for thousands of years by many millions of speakers. The differences among the dialects of Chinese are so great that speakers of Chinese from some parts of China__20__ understand speakers from other parts.
语篇解读：本文主要说明了语言的起源及变化。
1．A.But B．So
C．However D．Besides
解析：选C 语言的起源一直是人们感兴趣的事情，但是没人确切地知道语言的起源究竟是怎样的。然而，我们还是对语言有许多了解。 but后不能出现逗号。
2．A.English B．history
C．Chinese D．languages
解析：选D 由上下文可知此处一直是在讲对语言的认识，而不单纯是对汉语或英语的认识。
3．A.earlier B．later
C．modern D．hard
解析：选A 人们对现在的语言以及更早的语言有所了解。由上下文可知此处与today对应。
4．A.is B．are
C．was D．were
解析：选B 由后面的“about three thousand languages in the world today”可知此处应用be 动词的一般现在时的复数形式。
5．A.for B．with
C．in D．of
解析：选B 由with引导的介词短语作定语，修饰language，表示“汉语是使用人数最多的一种语言”。
6．A.In a word B．On the one hand
C．What's more D．On the other hand
解析：选D 上文指出汉语是使用者最多的一种语言，接着又说英语、俄语和西班牙语也有数百万人使用，后文话锋一转讲到，还有不到一百人使用的语言，所以此处用on the other hand。
7．A.forms B．systems
C．families D．changes
解析：选C 由后面的内容可知语言有几大语系，用families表示。下文的one large family也是提示。
8．A.Europe B．Asia
C．Africa D．America
解析：选A 由后面的Indo European language family可知，欧洲的大多数语言都属于一个大的语系——印欧语系。
9．A.called B．spoken
C．calling D．speaking
解析：选A 过去分词called作定语，表示“被称做”。
10．A.before B．ago
C．later D．old
解析：选B 由前面的was spoken可知，此处应该用与一般过去时连用的ago。 before用于过去完成时的句子中。
11．A.times B．families
C．forms D．members
解析：选C 现在印度与欧洲的一些语言实际上就是4 500年以前的语言的现代形式(forms)。
12．A.always B．seldom
C．often D．sometimes
解析：选A 由下文可知，语言一直都在发展变化。always与现在进行时态连用表示“总是”。
13．A.about B．with
C．between D．from
解析：选D be different from“与……不同”，为固定短语。
14．A.die out B．die away
C．die down D．die off
解析：选A 经过一段时间有些语言完全消失了。 die out“灭绝；死光；消失”，符合语境。 die away“逐渐模糊；逐渐减弱”；die down“逐渐变弱；暗淡”；die off“相继死去”。
15．A.Spanish B．English
C．Chinese D．Russian
解析：选B 一千年前的英语还与当时人们讲的德语有亲戚关系。
16．A.called B．told
C．spoken D．named
解析：选C 表示“讲(某种语言)”用speak，此处用过去分词作定语表示被动。
17．A.a great deal of B．a few
C．a little D．a lot of
解析：选D 讲某种语言的人多或某种语言很古老，那么不同地区人们说话的方式就有差别。A、C项只修饰不可数名词；a few表示“几个”，意义不符。
18．A.speakers B．differences
C．difference D．changes
解析：选B 由上文可知此处指人们说话方式的不同，用复数形式。
19．A.That is B．Therefore
C．In fact D．However
解析：选A 此处是对上文的说明：也就是说(that is)，一种语言可能有几种方言。
20．A.mustn't B．may not
C．won't D．can't
解析：选D 方言的差别如此之大，以至于来自不同地区的人都无法相互沟通。此处表示“不会，不能”，故用can't。
Ⅴ.阅读理解
A
English has surely become the global language. Whenever we turn on the news to find out what's happening in East Asia, or Africa, or anywhere, people are being interviewed and telling us about it in English.
If people look at the facts about the amazing reach of the English language, many would
be surprised.English is used in over 90 countries as an official or semi official language.English is the working language of many international institutes (研究所) as well as of most international research scientists.It is also the language that Indian parents and black parents wish their children to learn.It is believed that over one billion people worldwide are now learning English.
One of the most important causes of the spread of English around the world is that Europeans are willing to accept it as their language.English is spreading from northern Europe to the south and is now the second language in countries such as Sweden, Norway, Netherlands and Denmark.If one visits any of them, it would seem that almost everyone there can talk in English.
Recently, a report said that at the beginning of 2001，English was the most widely known foreign language with 43% of Europeans saying they spoke it.The report also said that with over 89% of the population speaking English，Sweden now has the highest percentage of English speakers.What's more, English is the language rated as most useful to know, and over 77% of Europeans who do not speak English as their first language consider it useful.
语篇解读：本文主要说明了英语是目前世界的通用语言。
1．By writing this passage, the writer mainly wants to tell us ________.
A．why so many people speak English around the world
B．that English has become a language spoken all over the world
C．about the development of English in Europe
D．something about the English speaking countries
解析：选B 主旨大意题。根据本文的第一句“English has surely become the global language.”以及后文的具体描述可知，作者主要想告诉我们，英语是目前世界的通用语言。
2．According to the passage, what has played an important role in spreading English around the world
A．That governments have asked their people to learn it in school.
B．That English is the most beautiful language in the world.
C．That Europeans are willing to accept English as their language.
D．That people have to use English in their work.
解析：选C 细节理解题。根据第三段的“One of the most important causes of the spread of English around the world is that Europeans are willing to accept it as their language.”可知C正确。
3．What does the underlined word “rated” in the last paragraph mean
A．Stood. B．Agreed.
C．Considered. D．Argued.
解析：选C 词义猜测题。根据语境以及第四段的“consider it useful”可知，rate在这里意为“认为，看作”。
4．What can we learn from the passage
A．Black parents don't want their children to learn English.
B．English is used in over 90 countries as an official language.
C．Not all international research scientists speak English at work.
D．English has become the most important language in Sweden.
解析：选C 细节理解题。根据第二段的“English is the working language ...as well as of most international research scientists.”可知，并不是所有的国际研究科学人员工作时都使用英语。
B
This is a story from a book written in 1875 by a man named Robert Boyd.It's called “Trials and Triumphs of Faith”．It's put me in tears more than once.
A young musician told us that he was spending several days in one of our western cities.He put up in a hotel, and one morning he heard, while up in his room, the most wonderful whistling he had ever heard.It seemed like the note of a bird, but he thought it could not be that, for there was a perfectly regular tune kept up with much power.Though he was on the third floor, the music came straight up in its sweet melody (曲调) and seemed to fill the whole house.
The young man ran downstairs to get a sight of the wonderful performer, looking every man that he met in the face.At last, he asked the clerk who it was that had such amazing power as a whistler.Laughing at his question, the clerk pointed to a canary (金丝雀) that had been trained to perform in this way and was valued at D|S150.
“How was that bird trained to sing this way？” the young man asked.In reply the clerk told him that during the training process the bird was nearly starved and shut up in a room that was almost dark.While it was under severe discipline, with its attention undivided, an organ (风琴) was made to play this one tune over and over again for days.Hearing nothing else, and taught by its troubles, the poor little bird took up the tune, which it performed so perfectly.
语篇解读：一位音乐家在一家旅店住宿时听到了一阵悠扬而高亢的美妙曲调。他以为是有人在吹口哨，而实际上是一只金丝雀在唱歌。
5．What does the author think of the story written by Robert Boyd
A．Funny. B．Disappointing.
C．Moving. D．Humorous.
解析：选C 推理判断题。根据第一段最后一句可推知，这个故事让作者感动不已。
6．Before running downstairs, the young man thought the music was made by ________.
A．a bird singing
B．someone whistling
C．someone playing the organ
D．a strong wind blowing
解析：选B 推理判断题。根据第三段第二句可推知，年轻的音乐家认为是有人在吹口哨。
7．While being trained, the bird ________.
A．was often fed with delicious food
B．paid full attention to the outside world
C．could fly freely in a comfortable large room
D．could hear nothing but the tune from an organ
解析：选D 细节理解题。根据最后一段可知，那只金丝雀在黑暗的房间里只能听到风琴奏出的那个曲调。
8．What would be the best title for the text
A．A Beautiful Lesson
B．An Expensive Canary
C．An Experience in a Hotel
D．The Power of Music
解析：选A 标题归纳题。在故事中，金丝雀在饥饿且黑暗的痛苦煎熬中学会了一段曲调优美的旋律。音乐是美丽的，学习的过程却是痛苦的。A项最能突出此主旨。PAGE
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Unit 2 课时跟踪检测(一)
Warming Up & Reading — Pre-reading
阅读理解
A
Some English words are made up of the same part and have different beginnings and different endings, such as import, export, report and transport. All these words, you can see, have the same “port”， which come from the Latin word, meaning “to carry” or “to move” from one place to another. And according to the bit at the beginning, which we call the prefix the meaning changes.“Import” means “to carry in” or “to bring into a country”， “export”， “ex” means “out of”， so this word means “to carry out of the country”， “re” means “back”， so the “report” means “to tell somebody, to bring back information to somebody”， “transport”， “trans” means “across” and it means “to carry across one place to another”．
Let's look at the following words: supporter, reporter, importer and exporter. You can see that in this case these words are nouns which are made up of the verbs plus a suffix, thus meaning a person who completes the verb. So supporter means somebody who supports. A reporter is somebody who reports. Importer is somebody who imports and exporter is somebody who exports, and so on.
语篇解读：本文介绍了英语构词法的有关知识。
1．By adding a prefix or a suffix to a root, we can get a word which has ________.
A．the meaning of a Latin word
B．a different meaning
C．the meaning of “in” or “out of”
D．a lot of meanings
解析：选B 推理判断题。根据第一段的“And according to the bit at the beginning, which we call the prefix the meaning changes.”可推知，词根加上不同的前、后缀，可得到不同的意义。A和C的说法太片面。
2．We can get a noun ________.
A．just by adding “er” to verbs
B．by changing a prefix
C．only by adding “er” to a root
D．by adding a suffix to a verb
解析：选D 细节理解题。根据第二段的“You can see that in this case these words are nouns which are made up of the verbs plus a suffix, thus meaning a person who completes the verb.”可知，在动词后加上一个后缀，就变成了名词。
3．According to the passage, if we talk about a man of refinement, you may guess that he must be ________.
A．a man having good manners and education
B．a person who should be educated
C．somebody having bad manners
D．a person punished by somebody else
解析：选A 推理判断题。文中说在动词后加上一个后缀，就变成了名词。refine是动词，本意为“净化，精炼，纯净”，加上后缀?ment 后变成了名词，故A最佳。
B
English is not pronounced as it is written: vowels (元音) and consonants (辅音) can often be pronounced in different ways, and there are no accents to help you with stress. For this reason, most students see pronunciation as one of the most difficult things of the language, and they expect their teacher to help them with it. Before a student can pronounce well, they must be able to pronounce each sound more or less correctly.
·Incorrect pronunciation is one of the main reasons for breakdown in communication.
·The more help students are given with their pronunciation, the more confident they feel when they speak and the more likely they are to have a go at speaking.
·There is no point in teaching students new words or phrases if they can't pronounce them correctly.
·Although there are many irregularities, there are also rules which can help students to pronounce better. About 70% of words in English follow a regular pronunciation style.
·If students are taught to recognize phonemic scripts(音标注音), they will be able to check pronunciation of new or unusual words in their dictionary.
·Certain English sounds may not exist in their language at all or may be similar but different. Students may tend to pronounce letters or a group of letters in the same way as in their own language.
·Teaching the 44 sounds of English altogether makes students realize that the number of sounds isn't limitless.
·Students can be taught to see the relationship between a single letter and a sound, and how certain groups of letters produce certain sounds.
REMEMBER
Encourage your students with their pronunciation.
语篇解读：本文主要讲述了英语发音的重要性，并提出了如何让学生学好发音的几条建议。
4．If you pronounce a word incorrectly, people will ________.
A．not get along well with you B．not be able to understand you
C．teach you the correct pronunciation D．encourage you to pronounce correctly
解析：选B 推理判断题。根据文章第二段的“Incorrect pronunciation is one of the main reasons for breakdown in communication.”可知，错误的发音会影响交流。由此可推知，如果你发音不正确，对方将不能理解你的意思。
5．The author probably disagrees that ________.
A．pronunciation is one of the most difficult things of the language
B．there are pronunciation rules for most of the English words
C．students should learn new words before pronouncing them correctly
D．teachers should help and encourage students with their pronunciation
解析：选C 细节理解题。根据第四段可知，如果学生不能正确地读出新单词的发音，那么老师教他们这些新单词也是没有意义的，故答案为C项。
6．What does this passage mainly talk about
A．The development of English.
B．The most difficult thing of English.
C．The English teachers' correct attitude.
D．The importance of teaching English sounds.
解析：选D 主旨大意题。本文主要讲了正确的英语发音的重要性，并提出了如何让学生学好发音的几点建议，故D项为最佳选项。
C
We all know what a brain is.A doctor will tell you that the brain is an organ (器官) of the body in the head.It controls our body's functions, movements and thoughts.But a brain can mean so much more.
A brain can also simply be a smart person.If a person is called brainy, he is smart and intelligent.If a family has many children but one of them is super smart, you could say, “He's the brains in the family.”And if you are the brains behind an organization, you have the duty to develop and organize it.
Brain trust is a group of experts who give advice.Word experts say the phrase “brain trust” became popular when Franklin D．Roosevelt first ran for president in 1932.Several professors gave him advice on social and political issues facing the US.These professors were called his “brain trust”．
These ways we use the word “brain” all make sense.But other ways we use the word are not so easy to understand.For example, to understand the next brain expression, you first need to know the word “drain”．To drain means to remove something by letting it flow away.So a brain drain may sound like a disease where the brain flows out the ears.But a brain drain is when a country's most educated people leave their country to live in another.
However, if people are responsible for a great idea, you could say they brainstorm it.Here, brainstorming is not an act of weather.It is a process of thinking creatively (创造性地) about a topic.For example, business leaders may use brainstorming to create new products, and government leaders may brainstorm to solve problems.
If people are brainwashed, it does not mean their brains are nice and clean.To brainwash means to make someone accept new beliefs by using repeated pressure (压力) in a forceful or tricky way.Keep in mind that the word “brainwash” is never used in a good way.
语篇解读：本文主要介绍了brain这个单词以及与该词有关的一些表达。
7．If you're the CEO of Baidu, you can be called ________.
A．Baidu's brain trust B．the organ of Baidu
C．the brains behind Baidu D．the brain drain of Baidu
解析：选C 细节理解题。根据第二段最后一句可知，“the brains behind an organization”的意思是“组织的策划者”。同理，百度的总裁可被称为“the brains behind Baidu”。
8．Why did Roosevelt successfully become president of the US
A．He got his brain trust. B．He controlled the brain drain.
C．He was good at giving advice. D．He was the brain trust of Americans.
解析：选A 细节理解题。根据第三段第二至四句可知，Roosevelt能当选总统得益于他拥有一个强大的“智囊团(brain trust)”。
9．Which of the following expressions is always used in an impolite way
A．Brainstorm. B．Brain trust.
C．Brainwash. D．Brain drain.
解析：选C 细节理解题。根据最后一段最后一句可知，brainwash一词是贬义词，总是被用到贬义语境中。
10．What does the text mainly tell us
A．The origin of the word “brain”．
B．The word “brain” and its stories.
C．The brain is an important organ of the body.
D．We should use our brain smartly and intelligently.
解析：选B 主旨大意题。总结全文内容可知，本文主要介绍了brain这个单词以及与该词有关的一些表达。B项概括得最全面。
