2. 外语
  3. During the past quarter century the power for man to alter the nature of his world has not only been increased to one of disturb

During the past quarter century the power for man to alter the nature of his world has not only been increased to one of disturb

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问题     During the past quarter century the power for man to alter the nature of
his world has not only been increased to one of disturbing magnitude but it (1)______
has changed in character. The most alarming of all man’s assaults upon the
environment is contamination of air, earth, rivers, and sea with dangerous (2)______
and even lethal materials. This pollution is for most part irrecoverable; the (3)______
chain of evil it initiates not only in the world that must support life but in
living tissues is reversible. In this now universal contamination of the envi- (4)______
ronment, chemicals is the sinister and little-recognized partner of radiation (5)
in changing the very nature of the world and its life. Strontium 90, releasing (6)______
through nuclear explosions into the air, comes to earth in rain or drifts down
as fallout, lodges in soil, enters into the corn or wheat growing there, and in (7)______
time takes up its abode in the bones of a human being. Similarly, chemicals
sprayed on croplands or forests or gardens lying long in soil, entering into (8)______
living organisms, passing from one to the other in a chain of poisoning and (9)______
death. Or they pass mysteriously by underground streams until they emerge
and combine into new forms that kill vegetation, sicken cattle, and make un- (10)______
known harm on those who drink from once pure wells. As Albert Schweitzer
has said,"Man can hardly even recognize the devils of his own creation."
(1)
选项
答案been — /
解析 increase既可作及物动词义可作不及物动词，此词用于被动语态的情况远远少于主动语态，而且当它用于被动语态时往往有很强的人为感和被动感，因此在这里最好使用主动语态。试举其他几例：The population continues to increase．China’s industrial outputincreased by 7％．The company has increased the price of its cars．The increased investmentwill help stabilize the economy．
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