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Some researchers believe that there is n...

Some researchers believe that there is no doubt______a cure for AIDS will be found.

A. whether                          B. that

C. what                             D. which

 

B 【解析】 试题分析:考查名词性从句。there is no doubt that...“......是毫无疑问的”;that引导同位语从句,解释说明doubt所指的内容。故选B。 考点:考查名词性从句
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