试题来源：职称英语卫生类A级-2
【单选题】 He has established himself to be a competent manager by his successfully handling several difficult tasks.
A．definite
B．effective
C．qualified
D．deficient
参考答案：C
网考网解析：
[解析] 借助搭配结构“……经理”和句子中出现的词语“successfully handling(成功地处理)”判断答案应该是C“胜任的”。definite，adj．明确的，一定的；eff... 查看试题解析出处>>
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