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大學(xué)英語(yǔ)四級(jí)考試精選閱讀題附答案
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Water problems in the future will become nore intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for water will decease substantialy the amount of water available for diluting wastes. 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-increasingquantities of agricultural chemicals, From this, it is apparent 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 dwindled. The first relates to the treatment of wastes to decrease their pollution hazard. This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes, or efflunets, 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 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 the nutrients contained. Efflunets 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 potential eonomic uses for waste products.
1. The purpose of this passage is ________.
a. to alert the reader to the dwindling water supply
b. to explain industrial uses of water
c. to acquaint the reader with water pollution problems
d. to demostrate various measures to solve the pollution problem
2. Which of the following points is NOT INCLUDED in the passage?
a. In dustrial development incudes the simplification of complex chemical processes.
b. Diluting wastes needs certain amount of water
c. Demands for water will go up along with the expanding population
d. Intensive cultivation of land requires more and more chemicals
3. The reader can conclued that ________.
a. countries of the world will work together on polution problems
b. byproducts from wastes lead to a more prosperous marketplace
c. science is making great progress on increasing water supplies
d. some industries are now, aking economic use of wastes
4. The author gives substance to the passage through the use of ________.
a. interviews with authorities in the field of water controls
b. opinions and personal observations
c. definitions which clarify important terms
d. strong arguments and persuasions
5. The words "prior to"(para.2) probably mean ________.
a. after
b. during
c. before
d. beyond
答案: cadbc
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