血液弥漫性分布于组织间隙，使出血组织呈现大片暗红色的病变称为（）
A.出血性素质
B.溢血
C.点状出血
D.出血性浸润
参考答案：D
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
词的引申义
