题目内容
听力原文：M: Some people seem to need significantly less sleep than others.
W: Tell me about it. I have a friend who swears that she sleeps only five hours a night. She seems to have plenty of energy, and she's not confused and incompetent the way I am after several nights of only five hours of sleep. You know what really annoys me？ Because she sleeps less, (23) she has more time to accomplish more in her days than I do. It's not fair.
M: I know what you mean. I've also heard scientists have discovered a gene in flies that determines how much rest the individual needs. Flies with a version of this gene are actually programmed to need less sleep than others. (24) And we humans possess a similar gene.
W: So the amount of sleep one needs seems to be genetically inherited？
M: Yes. And (25) families of flies with a lower sleep requirement don't seem to suffer any injuries in their performance of daily tasks. It may very well be that people who claim to need less sleep to operate normally are telling the truth.
W: That's depressing.
M: Well, you might be interested to know that flies programmed to sleep less tend to die earlier.
W: Really？ So maybe I'll end up with the same hours of waking time as my friend after all. It'll just take me a few extra years of living to catch up with her!
M: Maybe.
(20)
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听力原文：M: You know the noise in our building has really got out of control. My roommate and I can rarely get to sleep before midnight.
W: Why don't you take the problem to the dorm supervisor？
Q: What does the woman suggest the man do？
(15)
What does the author suggest about how to keep a time log？
After analyzing the first time log, the author found that he ______.
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： A tsunami is a series of huge waves that can cause great devastation and loss of life when they strike a coast. The word tsunami comes from the Japanese word meaning "harbor wave". Tsunamis are sometimes incorrectly called "tidal waves". Actually tsunamis are not caused by the tides for the gravitational force of the moon on the sea. Regular waves are caused by the wind.
(30) Tsunamis are caused by an underwater earthquake, a volcanic eruption, a sub-marine rockslide, or, more rarely, by an asteroid or meteoroid crashing into in the water from space. (31) Most tsunamis are caused by underwater earthquakes, but not all underwater earthquakes cause tsunamis. An earthquake has to be over about magnitude 6.75 on the Richter scale for it to cause a tsunami. About 90 percent of all tsunamis occur in the Pacific Ocean.
Many tsunamis could be detected before they hit land, and the loss of life could be minimized, with the use of modern technology. If you see the water recede quickly and unexpectedly from a beach (this is called drawback), run toward higher ground or inland, there may be a tsunami coming. Also, if you are on the coast and there is an earthquake, it may have caused a tsunami, so run toward higher ground or inland. Some beaches have tsunami warning sirens, do not ignore them. The first wave in a tsunami is often not the largest; if you experience one abnormally-huge wave, go inland quickly, even bigger waves could be coming soon.
(32)After the huge volume of water has moved, the resulting wave is very long but not very tall (roughly 3 feet tall). The wave spreads across the sea in all directions; it can travel great distances from the source at tremendous speeds.
(27)
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