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] 【C4】

选项 A、reduced
B、transformed
C、formed
D、made

答案 B

解析词语搭配本句意为：他将森林草原变成农庄，将河流改造成用于灌溉或发电的湖泊和水库；根据语境此处需要填一个表示“改变”且能与into连用的动词的过去分词；transform表示：完全改变某事或某物的外观、形式或性质特点，特别是用来表示改善的变化，且能与into连用：transform somebody／something(from something)into something例如：The movie transformed her almost overnight from an unknown schoolgirl into a megastar． (电影使她一夜之间从一个几乎不为人知的女学生变成了一个演艺巨星)；因此答案为B。

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