Man cannot prevent the world from beingpolluted because<br>A. the population of the world is increasing faster<br>B. people use too many man-made materials<br>C.we have more industry<br>D. we are producing more cars, trucks and buses

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

出自：四川农业大学大学英语

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