试题解答(1)
Part Ⅱ Reading Comprehension (Skimming and Scanning)
1. N 第一段第二句“Today, tropical rainforests cover only 6 percent of the Earth's ground surface，but they are home to over half of the planet's plant and animal species”中提到，热带雨林占全球面积的6%，却拥有超过地球一半以上的动植物种类。这句话表明，不是所有动植物物种都能在热带雨林中找到，比如很多海洋生物就不能在热带雨林中找到。
2.根据“What Is a Rainforest?”部分第三段中的“Since rainforests are at the middle of the globe，located near the equator，they are not especially affected by this change.They receive nearly the same amount of sunlight，and therefore heat，all year.Consequently，the weather in these regions remains fairly constant”，此说法是正确的。
3.文中并未提及哪里拥有最多、最大的热带雨林，只讲到热带雨林通常在赤道附近，常年炎热、降水充分、物种丰富。
4.由“What Is a Rainforest?”部分最后一段中的两句话“As you go lower，down into the rainforest，you find less and less greenery。”和“The overabundance of plants gathering sunlight at the top of the forest blocks most sunlight from reaching the bottom of the forest，making it difficult, for robust plants to thrive。”可见，由于浓密的树冠层挡住了大部分阳光，地面的植被并不茂盛。所以，题中说法是错误的。
5.“The Forest for the Trees”部分第一段中的“New tree seedlings rarely survive to make is to the top unless some older trees die，creating a “hole” in the canopy。”因此，答案是“some older trees die”。只有老树死亡后，新的树苗才能成活，向上生长，到达树冠层。
6.“The Forest for the Trees”部分最后一段中提到“Epiphytes are close enough to the top to receive adequate light，and the runoff from the canopy layer provides all the water and nutrients they need，which is important since they don't have access to the nutrients in the ground。”可见为附生植物提供水和养分的是树冠层。故正确答案为“the canopy layer”。
7.由“Strangler and Buttresses”部分的第一段最后一句“Eventually，the strangler may block so much light from above，and absorb such a high percentage of nutrients from the ground below， that the host tree dies。”可见附生植物最终导致宿主树木死亡。故答案为“kill the host tree”。
8.由“Strangler and Buttresses”部分的第三段中的“Rainforest bacteria and trees have a very close，symbiotic relationship.The trees provide the bacteria with fond，in the form of fallen leaves and other material，and the bacteria break this material down into the nutrients that the trees need to survive。”可知树木为细菌提供食物，细菌则分解这些东西，反过来为树木提供养分。它们之间是密切的共生关系。故答案为“symbiotic”。
9.由“All Creatures，Great and Small”部分第二段“As they travel，the insects may pick up the plants' seeds，dropping them some distance away。”和第三段“This helps to disperse the population of the plant species over a larger area.By the time they excrete the seeds，the birds may have flown many miles away from the fruit-bearing tree，”可见昆虫和鸟类都能帮助植物传播种子。雨林中生活的大量动物其实也帮助植物传播种子。所以，答案可以是“insects and birds/insects/birds/animals”。
10.由“Deforestation”部分的最后一段“Destroying the rainforests is comparable to destroying an unknown planet—we have no idea what we're losing。”可知正确答案为“an unknown planet”。
Part Ⅲ Listening Comprehension(听力原文在光盘中)
Tape Script of Listening Comprehension
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 center。
11. M: Congratulations! I just heard about your acceptance into law school. Do you think you will join your brother's firm after graduation?
W: Not likely. He is a tax lawyer and I'm going to major in criminal law。
Q: What does the woman mean?
12. M: Jenny, remember this: A job worth doing at all is worth doing well。
W: Oh, yes. I certainly won't forget it. But don't expect me to stick to the job just because it pays a few more bucks. A life of continued exploration is a life worth living!
Q: What can be inferred about the woman from the conversation？
13. M: I found that one of my schoolmates uses drugs. How could I help him, Mom?
W: Stay away from him, son. Never think that you can talk him out of the habit if he is addicted. But perhaps you can talk to your teacher about the matter。
Q: What's the woman's advice to her son?
14. W: I don't know how you can eat so much yet never put on any weight, son. Your father's got the same luck. I can't take a bite without calculating how many calories I'm taking。
M: But remember Aunt Louise, Mum? She ate a lot and never gained a pound。
Q: Who is worried about gaining weight?
15. W: Did you turn off the lights and check the locks on all the doors?
M: Yes. I told the Johnsons we'd be gone for two weeks. They promised to keep an eye on the house for us。
Q: What are the two speakers going to do?
16. M: Hurry up, Linda. I hear that there aren't many tickets left for the football match。
W: I'm ready now. Let's go. It's the early bird that catches the worm。
Q: Why did the man ask the woman to hurry up?
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