一个完整的客户关系管理系统应不具有( )的特征。
A. 开发性
B. 综合性
C. 集成性
D. 智能性
The children were (surprised) when the teacher (had them) (to close) their books (unexpectedly).
A. surprised
B. had them
C. to close
D. unexpectedly
I wondered ______ to come to the party.
A. whether he should have been asked
B. whether he should asked
C. whether he was asked
D. should he been asked
______ did I have any idea what a real man-made satellite looks like.
A. Until quite recently
B. It was quite recently
C. Not was it quite recently
D. Not until quite recently
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