单项选择题

A．30 minutes.
B．1 hour.
C．20 minutes.
D．40 minutes.
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单项选择题
A．It does not make any contribution to the world peace.B．It should not exist any longer.C．It is the best organization toward peace.D．It has been successful as many hoped.
A．It does not make any contribution to the world peace.
B．It should not exist any longer.
C．It is the best organization toward peace.
D．It has been successful as many hoped.
单项选择题
A．Because it easily causes fire.B．Because it will make the floor dirty.C．Because it will cause a lot of noises.D．Because children are frequently present there.
A．Because it easily causes fire.
B．Because it will make the floor dirty.
C．Because it will cause a lot of noises.
D．Because children are frequently present there.
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