A-A+
Results of a recent study appear to explain th
问题详情
Results of a recent study appear to explain the long-standing question of why many women develop lung cancer, ______ they themselves are non-smokers.
A.if
B.unless
C.but
D.although
参考答案
正确答案:D
解析:句意:一份最近的研究结果好像解释了长期以来的一个问题,即为什么许多女人会得肺癌尽管她们自己并不吸烟。本题考查连词辨析。if:如果;unless:除非;but:但是;although:尽管。此处although引导一个让步状语从句。