Question

【題目】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】考查名詞辨析。problem問題；matter事情；doubt疑問；question問題。句意：一些科學(xué)家相信——毫無疑問治療癌癥的新藥將被發(fā)現(xiàn)。故選C。