单项选择题

To communicate precisely what you want to say, you will frequently need to define key words.（）

A．无论你想说什么，要做到简明扼要，关键就是要对词进行定义。
B．只要定义频繁出现的关键词就能准确传达本意，
C．要准确表达你的本意，就必须不断定义关键词。
D．要简明扼要地表达本意，就必须不断定义关键词。

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