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【简答题】
Please complete the sentences with the given words. A. previous B. inspire C. neglect D. demonstrated E. guard F. substitute G. remarkable H. abuse I. refuge J. vibrations He was arrested on charges of corruption and ________ of power. His sudden departure had __________ how unreliable he was. They were forced to seek _______from the fighting. These children were in a state of virtual ________. I am unable to attend the meeting because of a ________ engagement. His encouraging remarks ________ confidence in me. We could feel the _______ from the trucks passing outside. Home-made parts are being ________ for imported ones. The Tang Dynasty is a period __________ for its liberality. To give me more time to rest, they wouldn’t let me stand ______.
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【单选题】对于关系模式R（X,Y,Z），下列结论错误的是（）。
A.
若X→Y,Y→Z，则X→Z
B.
若X→Z，则XY→Z
C.
若XY→Z，则X→Z,Y→Z
D.
若X→Y,X→Z，则X→YZ
【单选题】下面规则中，不正确的是 （ ）。
A.
若X→Y，WY→Z，则XW→Z
B.
若X→Y，Y→Z，则XY→Z
C.
若XY→Z，则X→Z，Y→Z
D.
若X→Y，则Y→Z，刚X→Z