4.According to the Duke University scientists, when does the shark stretch its collagen fibers to the greatest extent?
［A］When moving its tail rapidly。
［B］When finding its preys。
［C］When staying without any movement。
［D］When bending its body in swimming。
5.Why is the area just under the shark’s collagen fibers similar to a belted radial tire?
［A］Because it is also full of blood pressure。
［B］Because it is also filled of air pressure。
［C］Because it is also inflated by pressure。
［D］Because it also can be used again and again。
6.A laminar flow is formed when a fish swims________________。
［A］slowly through the water［B］rapidly through the water
［C］against the current［D］at the fastest speed in water
7.Consuming the equal amount of energy as a slug does, a mouse can travelas long as it______________。
［A］one twelfth times.［B］the same.［C］12 times.［D］1.2 times。
8.A shark finds its prey by________________。
9.According to the passage, _______________can be compared to the string of a bow for both of them store energy when stretched。
10.When the shark detects an important food source, __________________________take place。
Part III Listening Comprehension (35 minutes)
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked ［A］, ［B］, ［C］and ［D］, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre。
11.［A］He had finished his work.［B］He came back to surprise his wife。
［C］He came back for lunch.［D］He came back to fetch some document。
12.［A］At a library.［B］In a bus。
［C］At the airport.［D］At a post office。
13.［A］There’s a paper by the door。
［B］The paper must have blown away。
［C］He should look further under the desk。
［D］He can buy another one at the corner。
14. ［A］11: 25.［B］11: 40.［C］11: 46.［D］11: 26.
15.［A］The rent is too high。
［B］He can’t afford the high taxes。
［C］He doesn’t want to live in the suburbs。
［D］It’s too far away from his office。
16.［A］No. He has to finish his homework。
［B］No. He doesn’t like going to the club。
［C］Yes. He’ll go after he finishes his homework。
［D］Yes. He’ll write his paper after he returns。
17. ［A］She lost her way. ［B］She lost her keys。
［C］She lost her car. ［D］She lost her handbag。
18.［A］Worried and frightened. ［B］Very relaxed。
［C］Quite unhappy. ［D］Angry with the professor。
Questions 19 to 22 are based on the conversation you have just heard。
19. ［A］In a classroom.［B］In a snack bar。
［C］In the dormitory.［D］In a camera shop。
20.［A］The man’s brother.［B］The man’s roommate。
［C］A neighbor.［D］A photographer。
21.［A］He’s noisy.［B］He’s messy。
［C］He doesn’t tell the truth.［D］He doesn’t close the door。
22.［A］He worked for a radio station.［B］He lived in a dormitory。
［C］He took a long trip.［D］He visited the man’s family。
Questions 23 to 25 are based on the conversation you have just heard。
23.［A］One of his classes finished early。
［B］He wanted to get some studying done。
［C］The library had a special display on the Industrial Revolution。
［D］His books were ten days overdue。
24. ［A］Checked them out。
［B］Took notes on them。
［C］Returned them to the shelves。
［D］Put them in his bookbag。
25. ［A］They are marked with colored labels。
［B］They are specially coded。
［C］They are checked out。
［D］They are inspected by the guard。
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