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题目内容
（四川农业大学大学英语）
Man cannot prevent the world from beingpolluted because
A. the population of the world is increasing faster
B. people use too many man-made materials
C.we have more industry
D. we are producing more cars, trucks and buses
A. the population of the world is increasing faster
B. people use too many man-made materials
C.we have more industry
D. we are producing more cars, trucks and buses
参考答案