单选题：One purpose of writing a letter of complaint to a vendor is

题目分类：专四
题目类型：单选题
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题目内容：

One purpose of writing a letter of complaint to a vendor is to
[A]inform him that you find a problem．
[B]accuse him of irresponsibility．
[C]accuse him of negligence．
[D]tell him that his company is a total failure．

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