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Which of the following is NOT included in the passage? [br] [originaltext] W
Which of the following is NOT included in the passage? [br] [originaltext] W
游客
2024-09-20
51
管理
问题
Which of the following is NOT included in the passage? [br]
Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for water will decease substantially the amount of water available for diluting wastes.(14)Rapidly expanding industries which involve more and more complex chemical processes will produce large volumes of liquid wastes, 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, it is apparent from this, that drastic steps must be taken immediately to develop corrective measures for the pollution problem.
There are two ways by which this pollution problem can be reduced. The first relates to the treatment of wastes to decrease their pollution hazard.(15)A second approach is to develop an economic use for all or part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement. Effluents from sewage disposal plants are used in some areas both for irrigation and for nutrients. Effluents 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 by-products. Other industries will also have potential economic uses for waste products.
选项
A、treating the waste water containing harmful chemicals
B、leading water to a more prosperous marketplace
C、increasing water supplies
D、asking economic use of wastes
答案
D
解析
情景事实题。根据句(15)可知,讲话者提出了两种尽量减少水污染的方法。其中之一就是寻求废水在经济上的用途。接着短文中对此进行举例,说明一些废水也有其经济用途。因此D为正确答案。
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