Social attention should be paid our earth from .
A. to preventing; being polluted
B. to prevent; polluting
C. to prevent; being polluted
D. to preventing; polluted
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(答案→)A. to preventing; being polluted
B. to prevent; polluting
C. to prevent; being polluted
D. to preventing; polluted
解析：考查词组：第一空是考查pay attention to doing的被动式，在AD之间选择，第二空考查词组：prevent sb from doing阻止某人做…，our earth和pollute是被动关系，用动名词的被动式。句意：社会注意力应该放在防止地球被污染这方面。选A。