单项选择题

A．A computer.
B．A television.
C．A PVC pipe.
D．An air conditioner.
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单项选择题
A．By pushing a box against the door.B．By putting the refrigerator in a box.C．By using a long rope around the door.D．By keeping the hinges tightly with glue.
A．By pushing a box against the door.
B．By putting the refrigerator in a box.
C．By using a long rope around the door.
D．By keeping the hinges tightly with glue.
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