题目内容

To succeed in todays global market place, it is______to learn as much as possible about the conditions in overseas markets.

A. essential
B. interesting
C. suitable
D. negligent

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γ辐照装置的装源量比较大，活度范围为()Bq量级。

A. 1010-1014
B. 1012-1016
C. 1014-1015
D. 1016-1020

Where is the boundary between human mind and machine？ If the test were reasoning ability,

【C10】

A. either
B. each
C. both
D. every

【C9】

A. to sleep
B. sleeping
C. of sleeping
D. out of sleeping