（安徽安庆教学质量监测）Inpreparation for the launching of Shenzhou VII 4 scientists need knowled

问题补充：

（安徽安庆教学质量监测）Inpreparation for the launching of Shenzhou VII, 4、scientists need knowledge of weather changes.

A. the; the

B. a; /

C. /; a

D. the; a

答案：

A. the; the

B. a; /

(答案→)C. /; a

D. the; a

解析：考察冠词，In preparation for是固定搭配，第二空后的knowledge指具体的一门知识的时候是可数名词，所以选C项。