The new discovery _______ be of great service to mankind.
A. is bound to
B.is bound for
C.be bound to
D.be bound for
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正确答案: A 答案分析: be bound to:注定要,一定会。本题中主语是 The new discovery ,所以谓语动词要用is。句意:这项新发现对于人类必定大有用处。
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