development of nuclear weapons is threat to mankind.A. The; aB. The; theC. A; aD. A; the

发布时间:2020-08-16 21:09:52

     development of nuclear weapons is      threat to mankind.
A. The; a
B. The; the
C. A; a
D. A; the

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(答案→)A. The; a
B. The; the
C. A; a
D. A; the
解析:考查冠词。第一空是特指核武器的发展;threat是一个可数名词。句意:核武器的发展对人类是一个威胁。
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