Throughout history has【C1】______ changed his physical environment in order t

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问题 Throughout history has【C1】______ changed his physical environment in order to improve his【C2】______ of life. With the tools of technology he has【C3】______many physical features of the earth. He has【C4】______ woodlands and prairies into farms and made lakes and reservoirs 【C5】______ of rivers for irrigation purposes or hydroelectric【C6】______. Man has also modified the face of the earth by【C7】______ marshes and cutting through mountains to【C8】______ roads and railways.
However, man’s【C9】______ to the physical environment have not always had beneficial results. Today, 【C10】______ of the air and water is an increasing danger to the health of the【C11】______. Each day thousands of tons of gases come out of the exhausts of motor vehicles. 【C12】______ from factories pollutes the air of industrialized areas and the surrounding【C13】______ of the countryside. The pollution of water is equally harmful. The whole ecological【C14】______ of the sea is being changed and【C15】______ wastes have already made many rivers lifeless.
Now【C16】______ protection is more pressing than ever before. As we know, massive destruction of the environment has brought about【C17】______ effects and even poses a great【C18】______ to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective【C19】______ should be taken and laws passed to【C20】______ the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings. [br] 【C10】

选项 A、use
B、mixture
C、intake
D、pollution

答案 D

解析语境搭配本句意为：如今，空气和水的——对——的健康是个日益增长的危险。根据语境，此处应填之词应是D。

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