题目内容
第一节 听下面5段对话，每段对话后有一个小题，从题中所给的A、B、C三个选项选出最佳选项，并标在试卷的相应位置。 听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 Who gave the lecture yesterday
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第二节 完型填空 阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。 From Monday until Friday (36) people are busy working or studying, but in the evenings and (37) weekends they are free to enjoy themselves. Some watch TV or go to the movies; (38) take part in sports. It depends on individual (39) . There are many different ways to spend our (40) time. (41) . everyone has some kind of hobby. It may be (42) from collecting stamps to (43) model planes. Some hobbies are very (44) ; others don’t cost (45) at all. Some collections (收藏品) are (46) a lot of money; others are valuable only (47) their owners. I know a man who (48) a coin collection worth thousands of dollars. A short time ago, he got a (49) fifty cent piece by (50) $250. He was very happy about his collection and thought the price was (51) . On the contrary, my youngest brother (52) match boxes. He has almost 6,000 of them. But I (53) if they are worth any money. However, for my brother they are very (54) . Nothing makes him (55) than to find a new match box for his collection.
The molecules of carbon dioxide in the Earth’s atmosphere affect the heat balance of the Earth by acting as a one-way screen. (1) these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concerned, to pass (2) , they absorb some of the longer-wave-length, infrared emissions radiated from the Earth’s surface, radiation that would (3) be transmitted back into space. For the Earth to maintain a constant average temperature, such emissions from the planet must (4) incoming solar radiation. If there were no carbon dioxide in the atmosphere, heat would (5) from the Earth much more easily.Today, (6) , the potential problem is too much carbon dioxide. Could the increase in carbon dioxide (7) a global rise in average temperature, and could such a rise have serious (8) for human society Mathematical models that allow us to calculate the rise in temperature as a function of the increase (9) ;that the (10) is probably yes.One mathematical model (11) that doubling the atmospheric carbon dioxide would raise the global mean surface temperature by 2.5℃. This model assumes that the atmosphere’s relative humidity remains constant and the temperature decreases with altitude at a (12) of 6.5℃ per kilometer. The assumption of constant relative humidity is important, because water vapor in the atmosphere is another (13) absorber or radiation at infrared wavelengths. Because warm air can hold more (14) than cool air, the relative humidity will be constant (15) the amount of water vapor in the atmosphere increases (16) the temperature rises. (17) , more infrared radiation would be absorbed and reradiated (18) to the Earth’s surface. The resultant warming at the surface could be expected to melt snow and ice, (19) the Earth’s reflectivity. More solar radiation would be absorbed, (20) to a further increase in temperature. Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.4（）
第一节 单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 She is a stranger in this village. ______ nobody knows where she came from.
第一节 单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 Nowhere else in the world ______ more attractive scenery.
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