大学英语六级阅读100篇：自然环境.doc

1、2018年6月大学英语六级阅读100篇：自然环境" The world ' environment is surprisingly healthy. Discuss. " If that were an examination topic, most students would tear it apart. offering a long list of complaints: from local smog （ 烟雾）to global climate change, from the felling（砍伐）of forests to the extinctio

2、n of species. The list would largely be accurate,the concern legitimate. Yet the students who should be given the highest marks would actually be those who agreed with the statement. The surprise is how good things are, not how bad.After all. the world ' s population has more than tripled during

3、 this century, and world output has risen hugely. so you would expect the earth itself to have been affected. Indeed, if people lived, consumed and produced things in the same way as they did in 1900 （or 1950.or indeed 1980）, the world by now would be a pretty disgusting place: smelly, dirty. toxic

4、and dangerous.But they don' tThe reasons why they don' t.and why the environment has not been ruined. have to do with prices. technological innovation, social change and government regulation in response to popular pressure. That is why today' s environmentsproblems in the poor countries

5、 ought. in principle, to be solvable.Raw materials have not run out. and show no sign of doing so.Logically. one day they must: the planet is a finite place. Yet it isalso very big. and man is very ingenious. What has happened is chat every time a material seems to be running short, the price has ri

6、sen and. in response. people have looked for new sources of supply, tried to find ways to use less of the material, or looked for a new substitute. For this reason prices for energy and for minerals have fallen in real terms during the century. The same is true for food. Prices fluctuate, in respons

7、e to harvests. natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available. But they always do. assisted by new farming and crop technology. The long-term trend has been downwards.It is where prices and markets do not operate prop

8、erly that this benign (良性的)trend begins to scumble, and the genuine problems arise. Markets cannot always keep the environment healthy. If no one owns the resource concerned. no one has an interest in conserving it or fostering it: fish is the best example of this.1 .According to the author, most st

9、udents.A) believe the world ' environment is in an undesirable conditionB) agree that the environment of the world is not as bad as it is thought to beC) get high marks for their good knowledge of the world s environmentD) appear somewhat unconcerned about the state of the world environment2 .Th

10、e huge increase in world production and population.A) has made the world a worse place to live inB) has had a positive influence on che environmentC) has not significantly affected the environmentD) has made the world a dangerous place to live in3.One of the reasons why the long-term trend of prices

11、 bas been downwards is that.A) technological innovation can promote social stabilityB) political instability will cause consumption io dropC) new farming and crop technology can lead to overproductionD) new sources are always becoming available4 .Fish resources are diminishing because.A) no new subs

12、titutes can be found in large quantitiesB) they are not owned by any particular entityC) improper methods of fishing have ruined che fishing groundsD) water pollution is extremely serious5 .The primary solution to environmental problems is.A) to allow market forces to operate properlyB) to curb cons

13、umption of natural resourcesC) to limit the growth of the world populationD) to avoid fluctuations in prices答案:1 .作者认为，大部分学生 OA）相信全球环境现在是糟糕的B）同意全球环境没有人们想象的那么糟糕C）在关于全球环境知识上掌握得很好，取得了很高的分数D）对全球环境表现出不关心的态度A根据文章第1段前两句”如果以全球环境状况非常好 作为考试题，大多数学生会将试卷撕碎，并列出一大堆的抱怨， 从烟雾到全球气候变暖， 从砍伐森林到物种灭绝 工由此可推断, 大多数学生认为全球环境并不令

14、人满意。因此，A正确。2 .世界生产力和人口的激增， oA）使得这个世界的居住环境更加糟糕B）已经对环境造成了正面的影响C）并没有严重地影响环境D）使得世界的居住环境更加危险C根据文章第2段全段和第3段首句”本世纪，全球人口增 加了三倍多，全球产量也有巨大的增长， 因此你可能会认为地球 会受到影响。的确.如果人们还像1900年或1950年甚至1980年那样居住，消费和生产，那么到现在，地球很可能是一个令人厌恶的地方但人们没有这样做 工注意此处的虚拟语气，由此可推 断产量和人口的增加并没有对全球环境造成太大的影响，故此， 应选Co3 .从长期来看，价格是下降的，其中的一个原因是A）技术创新促进了社会稳定型B）政治的不稳定性会导致消费下降C）新的农耕和作物技术会导致过度生产D）总能获得新的资源D根据文章第4段第4、5句”每次当一种资源似乎就要匮乏 时，价格就会上升，相应地，人们会寻找新的资源，想方设法找 到节省资源的方法或者寻找新的替代品。正因为如此，本世纪能源和矿产品的价格实质上已经下降了一，故应选Do4 .鱼类资源在减少，因为 oA）没有大量的新替代品B）鱼类资源不属于任何一个实体C）不当的捕鱼方法损坏了渔区D）水质污染非常严重B根据文章最后一段第2、3句"市场并不能总是