英语三级A级

单选题 There is no doubt______________Herbert is the most industrious student in our class.

A．whether       
B．what            
C．that             
D．if

参考答案：C进入在线模考
【答案】C
【译文】赫伯特是我们班最勤奋的学生，这一点是不用怀疑的。 
【考点】同位语从句
【解析】名词doubt用在肯定句中，其后的同位语从句用whether引导，若用在否定句中则由that引导，故选C。

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