单项选择题

A．To keep medicine out Of children’s reach.
B．To cut off the power before mending any electric equipment.
C．Not to put a stove in the center of a room.
D．To plug in an electric appliance.
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单项选择题
A．Crude attempts were made to educate them.B．They were used for medical experiments.C．They were used as laborers.D．They were locked away like criminals.
A．Crude attempts were made to educate them.
B．They were used for medical experiments.
C．They were used as laborers.
D．They were locked away like criminals.
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