3. One of the reasons why Li wants someone to share his room is that_______.

A. he wants to live near the campus

B.　he wants to improve his English

C. he wants his washer, dryer and kitchen to be used

D. he wants someone to use his kitchen

2. If you want to find work , and you can speak English, you can __________ .

A. telephone 843-429065　　　　　 B. call 228-940605

C. call Hofman　　　　　　　　　 D. call Lan Fleming

1. You can call Zhang Ying if you want to _________________ .

A. buy a bike　　　　　　　　　　 　　B. sell a bike

C. have your bike repaired　　　　　 D. borrow a bike

5. ________________ have a mysterious power of knowing time without information from the outside world.

A. Animals including man as well as plants　　

B. All living things except man

C. Flowers are the only things in the world that　

D. Neither animals nor plants

⑿

4. Kept in constant darkness, flowers ________________________.

A. will not open or close as usual　　　　 B. will not open any longer

C. will open as they do in natural conditions　

D. will always remain in full blossom

3. Further study of the “inner clock” will be useful because ______

　A. it might help us in some way

　B. we do not yet understand plants and animals well enough

　C. the number of spacemen and airplane pilots is fast increasing

　D. we should try to live more naturally than we do now

2. The “inner clock” _________________________.

　A. is an unimportant discovery　　　　 B. is only found in animals

　C. has not been understood by far　　 D. has an effect on human life

1. A recent experiment showed that ________________.

　 A. different flowers open and close at different times of day

　 B. for their opening and closing, flowers do not need information from the outside world

C. flowers are influenced by weak light even when they are in a dark room

D. flowers can be used for telling the time

5. This passage is a (an) _______________________.

　 A. book　　　 B. report　　　 C. advertisement　　　 D. picture

　 ⑾We have known for a long time that flowers of different plants open and close at different time of day. This is so familiar that there seems to be no need to ask the reason for it. Yet no one really understands why flowers open and close like this at particular times. The process (过程) is not as simple as we might think, as recent experiments have shown. In one study, flowers were kept in constant (连续的) darkness. We might expect that the flowers, without any information about the time of day, did not open as they normally do. In fact, they continued to open at their usual time. This suggests that they have some mysterious (神秘的) way of knowing the time. Their sense of time does not depend on information from the outside world; it is, so to speak, inside them, a kind of “inner clock”.

This discovery (发现) may not seem to be very important. However, it was later found that not just plants but also animals -including man -have this “inner clock” which controls the working of their bodies and influences (影响) their activities. Men, then, are also influenced by this mysterious power. Whether we wish it or not, it affects such things in our life as our need for sleep, our need for food.

In the past, this did not matter very much because people lived in natural condition. In the modern world, things are different; now there are spacemen, airplane pilots and, in ordinary life, a lot of people who have to work at night. It would be very useful, then, to know more about the “inner clock”. Such ordinary things as flowers might help us understand more about ourselves.

4. If you want to rent a color television, ____________________.

　 A. leasing company (租赁公司) can have your set installed the same day

　 B. you can have a choice of sets to rent

　 C. leasing company will install an aerial for you free of charge

　 D. you must have an aerial