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The invention of artificial hearts marked a turning point in the battle ________ heart disease.

A.among

B.for

C.against

D.between

答案

答案:C

C 句义:人造心脏的发明标志着同心脏病做斗争的一个转折点。考察介词,against逆着,对着,反对;the battle against heart diease。

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