考研考博-考博英语-云南大学模拟考试题含答案4

1、考研考博-考博英语-云南大学模拟考试题含答案1. 单选题There are hidden factors which scientists call “feedback mechanisms”. No one knows quite how they will interact with the changing climate. Heres one example: plants and animals adapt to climate change over centuries. At the current estimate of half a degree centigrade of warming per decade, vegetation may not keep up. Climatologist James Hansen predicts climate zones will shift toward the poles by 50 to 75 kilometers a year faster than trees can naturally migrate. Spe

2、cies that find themselves in an unfamiliar environment will die. The 1000 kilometer-wide strip of forest running through Canada, the USSR, and Scandinavia could be cut by half. Millions of dying trees would soon lead to massive forest fires, releasing tons of C02 and further boosting global warming.There are dozens of other possible “feedback mechanisms”. Higher temperatures will fuel condensation and increase cloudiness, which may actually damp down global warming. Others, like the “albedo” eff

3、ect, will do the opposite. The “albedo” effect is the amount of solar energy reflected by the earths surface. As northern ice and snow melts and the darker sea and land pokes through, more heat will be absorbed, adding to the global temperature increase.Even if we were to magically stop all greenhouse-gas emissions tomorrow the impact on global climate would continue for decades. Delay will simply make the problem worse. The fact is that some of us are doing quite well the way things are. In the

4、 developed world prosperity has been built on 150 years of cheap fossil fuels.Material progress has been linked to energy consumption. Today 75 percent of all the worlds energy is consumed by a quarter of the worlds population. The average rich world resident adds about 3.2 tons of C02 yearly to the atmosphere, more than four times the level added by each Third World citizen. The US, with just 7 percent of the global population, is responsible for 22 percent of global warming.1.“Feedback mechani

5、sms” in Paragraph 1 most probably refer to（ ）.2.James Hansen predicts that the shift of climate zones will be accompanied by（ ）.3.We can learn from the passage that（ ）.4.It can be inferred from the passage that（ ）.5.Which of the following is the main topic of the passage?问题1选项A.how plants and animals adapt to hidden factorsB.how plants and animals interact with the changing climateC.how climate changesD.how climate zones shift问题2选项A.the cutting of many treesB.desirable environmental changesC.suc

6、cessful migration of speciesD.unsuccessful migration of trees问题3选项A.some feedback mechanisms may slow down global warmingB.the basic facts of global warming are unknownC.developing countries benefit from cheap fossil fuelsD.developed countries have decided to reduce their energy consumption问题4选项A.the developing world has decided to increase its energy consumptionB.a third-world citizen adds less than a ton of C02 yearly to the atmosphereC.the world climate would soon gain its balance if we stopp

7、ed greenhouse-gas emissionsD.future prosperity of the world is dependent on cheap fossil fuels问题5选项A.Material Progress and Energy Consumption.B.Prosperity and Cheap Fossil Fuels.C.Impact of Global Warming on Climate.D.Plants and Animals in the Changing Climate.【答案】第1题:B第2题:D第3题:A第4题:B第5题:C【解析】1.判断推理题。根据文章第一段，作者举出了植物和动物适应气候变化的例子。气温上升可能对植被的生长带来不利影响，气候区的移动会使处于陌生环境下的物种死亡。濒临死亡的植被会引发火灾释放大量的二氧化碳，从而进一步加剧全球变暖。可判断出第一段主要讨论了动植物和气候变化之间的相互作用和相互关系。所谓的“反馈机制”就是这种相互作用的关系。选项B符合题意。2.细节事实题。根据文章第一段， “Climatologist Ja

8、mes Hansen predicts climate zones will shift toward the poles by 50 to 75 kilometers a year faster than trees can naturally migrate. Species that find themselves in an unfamiliar environment will die.”，可知气候学家詹姆斯汉森预测，气候区将以每年50至75公里的速度向两极移动，比树的自然移动速度要快。而且发现自己身处陌生环境的物种将会死亡。可判断出詹姆斯汉森预测，气候区域的变化将伴随着树木不成功地迁移。选项D符合题意。3.细节事实题。根据文章第二段， “There are dozens of other possible feedback mechanisms. Higher temperatures will fuel condensation and increase cloudiness, which may actually damp down global warming.”，可

9、知还有许多其他的反馈机制。更高的温度将加剧凝结并增加云层，这实际上可能会减缓全球变暖。可判断出一些反馈机制可能会减缓全球变暖。选项A符合题意。4.判断推理题。根据文章最后一段， “The average rich world resident adds about 3.2 tons of C02 yearly to the atmosphere, more than four times the level added by each Third World citizen.”，可知富裕国家居民平均每年向大气中排放3.2吨二氧化碳，是第三世界居民人均排放量的四倍多。可判断出一个第三世界国家的居民每年向大气中排放的二氧化碳还不到一吨。选项B符合题意。5.主旨大意题。纵观全文，文章第一段主要讨论了动植物和全球气候变暖之间的相互作用和相互关系，着重讨论气候变暖给动植物带来的影响。第二段主要提到有些反馈机制也能减缓全球变暖，而有些反馈机制会加快气温上升。最后提到富国比第三世界国家的二氧化碳排放量要更多，这是因为物质进步与能源消耗有关。综上所述，整篇文章主题为全球变暖对气候的影响。选项C符合题意。2. 单选题I have had just about enough of being treated like a second-class citizen, simply because I happen to be that unfairly treated member of society a customer. The more I go into shops and hotels, banks and post offices, railway stations, airports and the like, the more I am convinced the things ar

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