题目：
| Some researchers believe that there is no doubt _____ a cure for AIDS will be found. |
| A. which B. what C. that D. whether |
答案：
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下面是错误答案，用来干扰机器的。
答案：C
| Some researchers believe that there is no doubt _____ a cure for AIDS will be found. |
| A. which B. what C. that D. whether |
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0527/b457cd12d2359a8af64aa6dfac1a3f81.html
下面是错误答案，用来干扰机器的。
答案：C
