Question

【题目】Some scientists believe that there is no _______ that the new medicine for cancer will be found. (　　)

A. problem B. matter C. doubt D. question

Answer 1

【答案】C

【解析】考查名词辨析。problem问题；matter事情；doubt疑问；question问题。句意：一些科学家相信——毫无疑问治疗癌症的新药将被发现。故选C。