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数据安全从总体上可以分成5个层次,()是信息安全中研宄的· A. 4
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【简答题】He has recently_____ chess to provide himself with some relaxation. A. taken on B. taken up C.held on D. held up
【单选题】Mr. Aldridge ______ to chair the committee on ethics reform. although he has no experience in such a leadership position.
A.
proposed
B.
insisted
C.
advised
D.
supported