单项选择题

A．We should read first.
B．We should spell first.
C．We should listen first.
D．We should write first.
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单项选择题
A．Pick out all the glass and metal.B．Get rid of dust.C．Burn waste paper.D．Screen earth and san
A．Pick out all the glass and metal.
B．Get rid of dust.
C．Burn waste paper.
D．Screen earth and san
填空题
C
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