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.
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单项选择题
A．In the post office.B．In a supermarket.C．In a department store.D．In a library.
A．In the post office.
B．In a supermarket.
C．In a department store.
D．In a library.
单项选择题
A．Over 150.B．Over 120.C．Over 160.D．Over 130.
A．Over 150.
B．Over 120.
C．Over 160.
D．Over 130.
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