单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．It brings better communication between offices.
B．It improves the office environment.
C．It highlights the competitive advantage of the company.
D．It makes enormous financial profits.
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填空题
Some Americans have changed their life plans by putting off ______.
单项选择题
What is true about the proposed rule on mercury’
A．It will prohibit the emission of mercury pollutant strictly.
B．It will help U. S. government deal with climate problem.
C．It will hinder the U. S. Congress from passing a bill on greenhouse gases.
D．It will encourage the production of more power from renewable sources.
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