单项选择题

The general tone of the text is

A．serious.
B．ironic.
C．enthusiastic.
D．matter-of-fact.
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单项选择题
The purpose of the first paragraph is to
A．interest and surprise the reader.
B．explain why the writer needs a fax.
C．convince the reader of the importance of faxes.
D．focus on the legitimate used of faxes.
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