问题
选择题
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
答案：C
考查句型：there is no doubt that 毫无疑问做某事，故选C。
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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：C
考查句型：there is no doubt that 毫无疑问做某事，故选C。