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单项选择题

A．People shed more than any other animal indoors.
B．People do not keep their room tidy.
C．People’s skin flakes are small enough to float in the air and pollute the indoor air.
D．The furniture people buy is in bad quality.
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单项选择题A．more Israeli troops were sent to combat the Arab militantsB．Israel closed both the Gaza Strip and West BankC．thousands of Arab Workers lost their jobsD．many Palestinians were driven out of their homeland

A．more Israeli troops were sent to combat the Arab militants
B．Israel closed both the Gaza Strip and West Bank
C．thousands of Arab Workers lost their jobs
D．many Palestinians were driven out of their homeland

单项选择题A．School.B．Clean house.C．The Environmental Protection Agency’s headquarters.D．None of the abov

A．School.
B．Clean house.
C．The Environmental Protection Agency’s headquarters.
D．None of the abov