There is no doubt ______ a large number of people have benefited from heart surgery.A.whet

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There is no doubt ______ a large number of people have benefited from heart surgery.

A.whether

B.if

C.that

D.what

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。

答案解析

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  • 正确答案:C
    名词性从句题。在doubt,doubtful后面的名词性从句中,如果主句为肯定句,从句连接词为whether或if,如:Iamdoubtfulwhetherheisstillalive.(我怀疑他是否仍然活着。)在否定或疑问句中,从句连接词要用that,因此C正确。