A study that women find it more difficult to give up smoking than men.
A. directs
B. indicates
C. influences
D. guides
网友回答
A. directs
(答案→)B. indicates
C. influences
D. guides
解析：句意：研究表明妇女发现戒掉烟瘾比男士还要难。Direct指导； indicate表明； influence影响； guide指南。根据句意故选B。