Water problem in the future will become more intense and more complex. Our increasing population will tremendously increase urban wasters, primarily sewage. On the other hand, increasing demands for water will decrease substantially the amount of water available for processing wasters. Rapidly expanding industries which involve more and more complex chemical processes will produce larger volume of liquid wasters, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasing quantities of agricultural chemicals. From this, it is apparent that serious steps must be taken immediately to develop corrective measures for the pollution problem. There are two ways by which this pollution problem can be settled. The first relates to the treatment of wastes to decrease their pollution danger. This involves the processing of solid wasters prior to disposal and the treatment of liquid wasters to permit the reuse of the water or minimize pollution upon final disposal. A second approach is to develop an economic use for all or a part of the wastes. Farm manure(肥料)is spread in fields as a nutrient or organic supplement. Wastes from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Wastes from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable byproducts. Other industries are exploring potential economic uses for their waste products.
单选题 The purpose of this passage is______.
【正确答案】 A
【答案解析】解析:主旨概括题。这篇文章主要介绍污水的现状以及治理方法。A包含这层意思;B警告读者要缩减水的供应,原文没有这个意思;C解释水在工业上的应用,太片面;D演示水的不同用法。文中只是介绍污水的使用,故答案为A。
单选题 Which of the following points is NOT included in the passage?
【正确答案】 D
【答案解析】解析:细节判断题。原文中Rapidly expanding industries which involve more and more complex chemical processes will produce larger volume of liquid wasters刚好与答案D的论述相反,所以文章一定没有包含D这个选项的内容。其他选项在文章中都可以找到。故答案为D。
单选题 The phrase "prior to" in Paragraph 2 probably means______.
【正确答案】 C
【答案解析】解析:语义词义题。按照常理推断,处理污水应该先过滤掉固体物质,然后再对剩下的液体进行处理,所以prior to一定是“在……之前”的意思。另外,在文章第二段的末尾有minimize pollution upon final disposal,与前面的disposal相对应,应该可以分析出,这个disposal是final的,所以prior to是“在……之前”的意思。故答案为C。
单选题 The reader can conclude that______.
【正确答案】 B
【答案解析】解析:逻辑推断题。这几个选项说得都没有错,但是能够从文章中推断出来的只有B。A不正确,因为文章没有提及国家间的合作;C也不对,文章只说副产品可以进入市场,但是不一定会带来市场的繁荣;D也不对,文章关于水供给的论述几乎没有。故答案为B。
单选题 The author gives substance to the passage through the use of______.
【正确答案】 C
【答案解析】解析:逻辑推断题。从全文来看,作者只是在表达个人的观点以及陈述个人观察的结果,并没有采访专家;也不是在争论驳斥,劝服他人;更不是在界定一个重要的术语。故答案为C。