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A．The students will never meet their professor.B．There're no assignments or exams for
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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： The United Nations published a report that was called "The State of World Population". It shows that the growth rate of world population will actually go down in the next ten years. The growth rate will fall from the present 18% to a rate of about 16% by the end of this century. But the report also points out that problems of food, health care, housing care, housing, jobs and schools will get worse unless we do something about the situation.
Why is this？ Although the total growth rate of the world population will decrease in some countries there will be a big rise in the population. More people will be born in Third World countries than in the richer Northern countries. So the population will grow faster in poor countries; and the problems in these countries will be very serious. This is because the family is more likely to survive if there are a lot of children to work for the members who become old or who cannot find work. A survey of the United Nations also shows that the growth rate is low where there is a higher level of income, better education, more health care and better living conditions. In this aspect, government plays an important role. So, the conclusion of the United Nations report is: "Look after the people and the population will look after itself."
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A．Because of the loudness of the sound waves.B．Because of the fear of sea animals.C．Be
A．They are inspiring.B．They are humorous.C．They are dull.D．They are wonderful.
听力原文： A team of scientists recently began a project to measure the effects of loud noises on sea animals. If the sounds don't harm the animals, then the researchers can go ahead with a plan to transmit sound waves through the Pacific Ocean to take the earth's temperature. Sound travels faster through warm water than cold water. By analyzing the speed of sound through the ocean over time, the scientists will be able to determine if cur planet is warming up. The experiment was nearly cancelled more than a year ago because environmental groups fear that the sound will confuse or harm sea-animals. So scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emits low frequency sound about 1,000 meters beneath the ocean. Scientists at the site transmit sound waves into the ocean. Radio transmitters attached to some of the sea animals help the researchers keep track of the animals' movements. If sea-animals are distressed by the sounds, they would swim away from the speakers. So far, there aren't any signs that the animals are being harmed. Researchers at the site noticed that large numbers of sea-animals swim near the speaker whether it was turned on or off, but it is still too soon to know for sure, the scientists admit. The test will continue through September. "If all goes well," they say, "we can begin measuring temperature changes on our planet."
(33)
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