东晋政治的核心特点是()。
A. 宦官专政
B. 中央政府垂直领导
C. 地方世族各自为政
D. 世族与皇权结合
________ I can’t understand is ___ she wants to change her mind.
A. What; because
B. Which; how
C. That; why
D. What; why
--- I saw your neighbor break your window with a basketball.--- ____ it made me nearly mad.
A. That he broke
B. What he broke
C. He broke
D. His break
It remains a question ____ we can get so much money in such a short time.
A. that
B. how
C. when
D. what