In fact , the hazy weather problem is so severe now that it has aroused __________ nationwide concern about __________ environmental pollution .

A. / ; /B. / ; the

C. a ; /D. a ; the

– I spent three hours buying a train ticket at the railway station the other day .

-- Why ? You __________ one on the Internet or by phone .

A. could have boughtB. must have bought

C. would buyD. should buy

The newly married couple couldn’t afford to buy a new car ; __________ , they bought a used one .

A. howeverB. instead

C. otherwiseD. still

– Well , Jack , I am sorry that I have to leave .

-- __________ . Let’s email often .

A. Enjoy yourselfB. That’s for sure

C. So am ID. Keep in touch

__________ is no possibility __________ Bob can win the first prize in the match .

A. There ; whetherB. There ; that

C. It ; whetherD. It ; that

As is known to all , bicycles of this kind __________ well here .

A. is soldB. are sold

C. sellsD. sell

当前，“酒后驾车”成了人们热议的话题。请你根据以下提示对“酒后驾车”谈谈个人看法：

1．“酒后驾车”的危害。如：引发交通事故，造成交通阻塞，构成生命危险，

造成财产损失等。

2．你的建议。

注意：1．词数100词左右；  

2．开头已为你写好，不计入总词数。

    Nowadays, drinking and driving is becoming a heated topic among people in China. Here, I’d like to air my views about it.

    ____________________________________________________________________

________________________________________________________________________

短文改错。（共10小题；每小题1分，满分10分）

You said in your letter that you are always trying to improve1.           

your English, and your English teacher didn’t appear to appreciate2.           

your efforts. So you felt disappointing and lost the desire to learn3.           

English. You know why teachers are busy and maybe your teacher4.           

is struggling to provide personal attention with all the students5.           

in their class. In my opinion, it is a fact of life that sometimes6.           

people’s hard work went unnoticed. Though it is nice to receive7.           

encouragement and support, parts of growing up is learning to be8.           

motivated and study independent. So keep on working hard9.           

at your English because you stop, you are sure to fail.10.           

We all know that the normal human daily cycle of activity is of some 7-8 hours' sleep alternating(交替) with some 16-17 hours' wakefulness and that the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified.
　　The question is no mere academic one. The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed（颠倒的） routine of sleep and wakefulness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts(轮班) are changed every week; a person may work from 12 midnight to 8 a.m. one week, 8 a.m. to 4 p.m. the next, and 4 p.m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently.
　　The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night-shift workers was carried out by Brown in 1957. She found a high incidence (发生率) of disturbed sleep and other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work.
　　This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the pressure of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People occupied in normal daytime work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only gradually go back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at two-hour intervals(间隔时间) throughout the period of wakefulness, it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far, however, such a form of selection does not seem to have been applied in practice.
1.The main problem of the round-the-clock working system lies in        .

A. the inconveniences brought about to the workers by the introduction of automation

B. the disturbance of the daily life cycle of workers who have to change shifts too frequently

C. the fact that people working at night are often less effective

D. the fact that it is difficult to find a number of good night workers

2.The best solution for implementing the 24-hour working system seems to be        .

A. to change shifts at longer intervals.

B. to have longer shifts

C. to arrange for some people to work on night shifts only

D. to create better living conditions for night workers

3. It is possible to find out if a person has adapted to the changes of routine by measuring his body temperature because        .

A. body temperature is higher when the cycle of sleep and wakefulness alternates

B. body temperature changes when he changes to night shift or back

C. the temperature reverses when the routine is changed

D. people have higher temperatures when they are working efficiently

4.Which of the following statements is NOT TRUE?

A. Body temperature may serve as an indication of a worker's performance.

B. The selection of a number of permanent night shift workers has proved to be the best solution to problems of the round-the- clock working system.

C. Taking body temperature at regular intervals can show how a person adapts to the changes of routine.

D. Disturbed sleep occurs less frequently among those on permanent night or day shifts.

If you think English means endless new words, difficult grammar and sometimes strange pronunciation, you are wrong. Haven’t you noticed that you have become smarter since you started to learn a language?

According to a new study by a British university, learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter. This is the area of the brain which processes information. It is similar to the way that exercise builds muscles.

The study also found the earlier people learn a second language, the greater the effect is.

A team led by Dr. Andrea Mechelli, from University College London(UCL), took a group of Britons who only spoke English. They were compared with a group of“early bilinguals(通两种语言的人)”, who had learnt a second language before the age of five, as well as a number of later learners.

Scans showed that grey matter density in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference was.

“Our findings suggest that the structure of the brain is changed by the experience of learning a second language,”said the scientists.

It means that the change itself increases the ability to learn.

Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills.

“Having two languages gives you two windows on the world and makes the brain more flexible,”he said,“You are actually going beyond language and have a better understanding of different ideas.”

The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of 2 and 34. Reading, writing and comprehension were all tested. The results showed that the earlier they started to learn, the better.“Studying a language means you get an entrance to another world,”explained the scientists.

1.What does the underlined part“grey matter”(in paragraph 2) refer to?

A. Grey hair.                        B. Material of the brain.

C. Intelligence.                      D. Difficult situations.

2.The experience of learning a second language can         .

A. change one’s brain completely

B. improve one’s maths skills

C. make one smarter than others

D. increase the ability to learn

3.We can learn from the passage that         .

A. the researchers from UCL did another study in Italy

B. a similar study was done on native Italian speakers who learn English as a second language

C. the research done on the Italians showed a totally different result

D. it will be easier for one to travel around the world by learning a second language

4.What’s the main idea of the passage?

A. Learning a second language can help improve your brain power.

B. You should learn a second language in English that is not your native language.

C. If you want to learn a second language, you should do it at a certain age.

D. The research done by the researchers from UCL is very successful.