Some researchers believe that there is no doubt___ a cure for AIDS will be found
题型：不详难度：来源：
Some researchers believe that there is no doubt___ a cure for AIDS will be found.| A．which | B．that | C．what | D．whether |
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答案
| B |
解析
| 本题考查同位语从句的引导词。题意为：一些研究人员认为，人们一定会找到治疗艾滋病的方法的。Doubt后接同位语从句时，如用于肯定句中，要用whether引导；如用于否定句中则用that引导。 |
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