题目内容
_____ the people have become masters of their country _____ science can really serve the people.
[ ]
A. It is only then; that
B. It was that; when
C. It is only when; that
D. It was when; then
B. It was that; when
C. It is only when; that
D. It was when; then
C
练习册系列答案
相关题目