听力题M: Have you done the lab for physiology yet — the one on taste? W: Yeah, it was kind of fun — mapping the taste buds. Didn''t you think so? M: I''m doing it this afternoon. How long will it take? W: It went pretty quickly — under an hour, anyway. See, first you mix up the four solutions. M: You take water and add either sugar, lemon juice, salt, or... uh... What was it? W: Bitter kwinnine. M: That''s it... uh ... then what? W: Then all you have to do is taste each sample and describe where each flavor seems most intense. M: Is that hard? W: Not really. One thing to remember though — not all the taste buds are on the tongue. M: Right. I''ll keep that in mind. And thanks for going over this with me. Maybe we could talk about this after I''ve tried it — we could get a pizza or something. W: Great. Give me a call. M: Have you done the lab for physiology yet — the one on taste? W: Yeah, it was kind of fun — mapping the taste buds. Didn''t you think so? M: I''m doing it this afternoon. How long will it take? W: It went pretty quickly — under an hour, anyway. See, first you mix up the four solutions. M: You take water and add either sugar, lemon juice, salt, or... uh... What was it? W: Bitter kwinnine. M: That''s it... uh ... then what? W: Then all you have to do is taste each sample and describe where each flavor seems most intense. M: Is that hard? W: Not really. One thing to remember though — not all the taste buds are on the tongue. M: Right. I''ll keep that in mind. And thanks for going over this with me. Maybe we could talk about this after I''ve tried it — we could get a pizza or something. W: Great. Give me a call.

听力题Unless we spend money to spot and prevent asteroids, i.e. minor planets, one might (36)________ into earth and destroy life as we know it, say some scientists. Asteroids are bigger (37)________of the meteoroids that race across the night sky. Most orbit the sun far from earth and don''t (38)________us. But there are also (39)________whose orbits put them on a (40)________course with earth. Buy $50 million worth of new (41)________right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we (42)________a fatal one, the scientists say, we''ll have a way to change its course. Some scientists favor pushing asteroids off course with nuclear (43)________. But the cost wouldn''t be cheap. Is it worth it? Two things experts consider when judging any risk are: (44)________________Experts think an asteroid big enough to destroy lots of life might strike earth once every 500,000 years. (45)________________. "If we don''t take care of these big asteroids, they''ll take care of us," says one scientist. "It''s that simple." The cure, though, might be worse than the disease. (46)________________? "The world has less to fear from doomsday rocks than from a great nuclear fleet set against them," said a New York Times article.

听力题 People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sings, however, its song usually means much more than that a bird is in a good temper. Birds have many reasons for singing. They sing to give information. Their songs are their language. Love songs are sung by male birds. They sing when they want to attract a female bird. It is their way of saying that they are looking for a wife. Birds also sing to tell other birds to keep away. To a bird, his tree, or even a branch of tree is his home. He does not want strangers to come near his home. So he sings to warn them. If a bird can not sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails, or make other signs. There is also a special kind of bird which builds a small garden of stones and flowers to attract a female bird. People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sings, however, its song usually means much more than that a bird is in a good temper. Birds have many reasons for singing. They sing to give information. Their songs are their language. Love songs are sung by male birds. They sing when they want to attract a female bird. It is their way of saying that they are looking for a wife. Birds also sing to tell other birds to keep away. To a bird, his tree, or even a branch of tree is his home. He does not want strangers to come near his home. So he sings to warn them. If a bird can not sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails, or make other signs. There is also a special kind of bird which builds a small garden of stones and flowers to attract a female bird.

听力题"Go to the playground and have fun

听力题W: I sure feel cheated! M: Why

听力题Mrs. Jones was very fond of singing

听力题In Britain, If you are found guilty of a crime

听力题M: Hi young lady. How may I help you? W: Well, .

听力题W: I enjoy looking through secondhand bookstores

听力题If the earth gets hotter in the new century

听力题M: Come on, Julie

听力题Man has a big brain. He can think

听力题W: Are you going to find a job again this summer

听力题I live in a small village in the country

听力题[此试题无题干]

听力题Questions 12 to 15 are based on the news report you have just heard

听力题Questions 1 and 2 are based on the news report you have just heard

听力题W: Look, I''m sorry, but the books for Chem

听力题W: Mike, do you have a minute? M: Oh, hi, Cathy

听力题[此试题无题干]