China always plays active part in fighting against natural disasters.A. /; theB. an; theC

问题补充：

China always plays active part in fighting against natural disasters.

A. /; the

B. an; the

C. an;/

D. /; /

答案：

A. /; the

B. an; the

(答案→)C. an;/

D. /; /

解析：第一空考查固定短语中的冠词，play an active part意为：起着积极作用；第二空自然灾害是泛指，其前不用冠词。句意：中国总是在抗击自然灾害面前起着积极作用。