单选题 {{B}}Text 3{{/B}}
The word conservation has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials; most of them, even until very recently, had the foolish idea that the treasures were "limitless" and "inexhaustible". Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.
Fifty years ago nature study was not part of the school work; scientific forestry was a
new idea; timber was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word "conservation" had nothing of the meaning that it has for us today.
For the sake of ourselves and those who will come after us, we must now set about repairing the mistakes of our forefathers. Conservation should, therefore, be made a part of everyone's daily life. To know about the water table in the ground is just as important to us as a knowledge of the basic arithmetic formulas. We need to know why all watersheds need the protection of plant life and why the running current of streams and rivers must be made to yield their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, mature trees, because living space for most of man's fellow creatures on this planet is figured not only in square measure of surface but also in cubic volume above the earth. In brief, it should be our goal to restore as much of the original beauty of nature as we can.
单选题 According to the author, the greatest mistake of our forefathers was that______.
【正确答案】 C
【答案解析】[解析] 细节题。由第一段第三句得知,过去人们缺少或者缺乏环保意识,认为自然资源取之不尽、用之不竭,这与C选项相符合。其余A、B、D选项虽然在文章中都被提到,但却不具有概括性。
单选题 It can be inferred from the third paragraph that earlier generations didn't realize______.
【正确答案】 B
【答案解析】[解析] 推理判断题。从第三段第四句到段末可得知,我们所需要知道的是水、土壤和生物之间是相互依赖的。A、D选项都是由第二段得知的,而C则是无中生有。
单选题 To avoid the mistakes of our forefathers, the author suggests that______.
【正确答案】 D
【答案解析】[解析] 推理判断题。由第三段句首可得知,我们必须改正祖先的错误,所以下文即提出了解决方案:Conservation should be made a part of everyone's daily life.该段紧接着就介绍了一些具体的环保知识,由此可以推断出我们每个人都应当接受环保教育,这与D项符合。A选项太过片面;B在文中没有被提及;C中的natural science与环保的概念不能等同。
单选题 What does the author imply by saying "living space...is figured...also in cubic volume above the earth." (Para. 3)?
【正确答案】 D
【答案解析】[解析] 猜测句意题。由此句得知,我们不仅要保护平面的空间(square measure of surface),还要保护立体的空间(cubic volume above the earth),二者分别指生活在陆地的动物和生活在空中的动物,即鸟类,因此这与D选项吻合。
单选题 The author's attitude towards the current situation in the exploitation of natural re- sources is
【正确答案】 A
【答案解析】[解析] 主旨题。由作者论述前人对环保的无知和对环境保护的急切呼吁可以得知,作者所持的态度不是positive(积极的)或者suspicious(怀疑的)。而文中在论述时有很多代表作者观点的话,因而选择neutral也是片面的。作者对于目前的资源的利用持的是批评态度,所以答案为A。