单项选择题

Advertising is an effective means of introducing a new product nationwide and generating sales leads（）

A．广告是一种全国范围内介绍一种新产品并推销的有效手段。
B．广告是一种有效手段，它在全国范围内介绍一种新产品，并产生销售。
C．广告是一种有效的手段，介绍一种新产品到国内进行销售。
D．广告是一种在全国范围内介绍新产品并产生销售优势的有效手段。

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What is the man going to do（）

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B．Lend him his notes.
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