第31题: [单项选择]The ______ of his first complaint led him to contemplate pursuing stronger methods to obtain satisfaction. A. success B. eminence C. efficiency D. inefficacy 参考答案:D 答案解析:(inefficacy无功效)。句意为:他最初的牢骚没有产生多大的作用,因此,他考虑寻求强硬的办法以获得满意的效果。A.success成功;B.eminence卓越;C.efficiency效率。