A. noxious B. demands C. in the future D. intensified Phrases: A. agriculture will have to be【T13】______ B. Water problems【T14】

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问题 A. noxious
B. demands
C. in the future
D. intensified
Phrases:
A. agriculture will have to be【T13】______
B. Water problems【T14】______will become more intense and more complex
C. On the other hand, increasing 【T15】______for water will decrease substantially the amount of water available for diluting wastes
D. and many of these will contain chemicals which are 【T16】______
    【T17】______. Our increasing population will tremendously increase urban wastes, primarily sewage. 【T18】______. Rapidly expanding industries which involve more and more complex chemical processes will produce larger volumes of liquid wastes, 【T19】______. To feed our rapidly expanding population , 【T20】______. This will involve ever-increasing quantities of agricultural chemicals.
【T18】

选项 A、 
B、 
C、 
D、 

答案C

解析 空格前面的句意为:我们日益增加的人口将极大地增加城市废物,主要是污水。本句从另一角度提及污染问题的根源。对水的日益增长的需求会导致污水的增加。故选C。
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