A person who believes that he is incapable will not make a real , because he feels that it would be useless.
A. decision
B. success
C. effort
D. trouble
网友回答
A. decision
B. success
(答案→)C. effort
D. trouble
解析：词义辨析。 A. 决定 B. 成功 C. 努力 D. 麻烦。句意：一个相信自己不能胜任的人不会付出真的努力，因为他觉得那不会有用。故选C。