单项选择题

The first paragraph tries to tell us how to control noise pollution by ______.

A．taking measures to reduce human exposure to noise
B．using or replacing with quieter products
C．appealing to Government to set up laws
D．people's serf consciousness

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单项选择题

Who founded Microsoft

A．Gates and his high school friend Paul Allen.
B．Bill Gates.
C．Gates, Allen and some other students.
D．Paul Allen.

单项选择题

What is the attitude of the narrator towards the measure taken to noise control

A．Satisfied.
B．Indifferent.
C．Concerned.
D．Optimistic.