在职攻硕英语考试

根据网考网考试中心的统计分析，以下试题在2018/11/12日在职攻硕英语习题练习中，答错率较高，为：39%
【单选题】Most people don’t think of a stamp as a receipt, but that is ____ it really is – a proof of just bow much money you have paid in advance for mail delivery.
A．what
B．why
C．how
D．who

网考网参考答案：A，答错率：39%
网考网试题解析：
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