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What will probably happen next？
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What does the woman offer to do？
Black, white and Asian children in this group show the same patterns. However, it is clear that blacks have been greatly overrepresented in the development of American popular music and greatly underrepresented in such fields as mathematics, science and engineering.
If the abilities required in analytical fields and in music are so closely related, how can there be this great discrepancy？ One reason is that the development of mathematical and other such abilities requires years of formal schooling, while certain musical talents can be developed with little or no formal training, as has happened with a number of well-known black musicians.
It is precisely in those kinds of music where one can acquire great skill without formal training that blacks have excelled popular music rather than classical music, piano rather than violin, blues rather than opera. This is readily understandable, given that most blacks, for most of American history, have not had either the money or the leisure for long years of formal study in music.
Blacks have not merely held their own in American popular music. They have played a disproportionately large role in the development of jazz, both traditional and modern. A long string of names comes to mind—Louis Armstrong, Charlie Parker... and so on.
None of this presupposes any special innate (先天的) ability of blacks in music. On the contrary, it is perfectly consisted with blacks having no more such inborn ability than anyone else, but being limited to being able to express such ability in narrower channels than others who have had the money, the time and the formal education to spread out over a wider ranger of music, as well as into mathematics, science and engineering.
What is the main idea of the first paragraph？
听力原文：W Hi Tom, I tried installing my new car stereo, but I guess I'm just not good with electronics. Do you think you can help me？
M I've never installed a car stereo before. I'm not sure I'd be able to do it.
W Oh. I figured since you were able to wire your home system, you could install a car stereo. Do you have any friends who can do it？ I'm afraid a professional might be expensive.
M Well, let me look at the directions first. I'll stop by later this afternoon and try to do it, and if I can't, you should have it done professionally. I don't think it's very expensive at all.
What is the purpose of the call？
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： To most of us sharks are the most dangerous fish in the sea and they attack humans. However according to Dr. Clark who has studied the behavior. of sharks for 12 years, humans are not normally on a shark's menu. What do sharks feed on？ Mainly fish and other small sea animals. Dr. Clark also found that sharks don't eat as much as people think. For instance, a 9-foot shark only needs 2 pounds of food a day to keep healthy. But she says sometime sharks starve and the other times they feed themselves with what they have killed.
Around the world there are only about 100 shark attacks on humans each year ten of which prove fatal. But consider this, in the U.S. alone, about 3 million people are bitten by dogs each other. Of these, thirteen people died. "If shark bites you", says Dr. Clark, "The reason is usually because it mistakes you for its natural food." For example, say you when underwater fishing and saw a shark, you could be in trouble. The shark might go for the injured fish you had attacked and take a big bite at you at the same time. If you go into a sharks' territory and threaten it ,it might try to bite you. because sharks are territorial and tend to guard their territory. Like dogs, they protect the area the think is their own.
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