单项选择题

Telecommuting is less environmentally friendly than office-based work.

A． right
B． wrong
C． Doesn't say
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单项选择题
Telecommuting has become main style of working.
A． right
B． wrong
C． Doesn't say
单项选择题
All speakers produce summaries of the sessions they gave.The speakers should write ______.
A. a proposal for their session.
B. a brief report about their session.
C. full details of what is in their session.
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