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technical
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单项选择题
A．Copy paper.B．Document piece.C．Food wrappers.D．Newspapers.
A．Copy paper.
B．Document piece.
C．Food wrappers.
D．Newspapers.
单项选择题
A．Because there are fewer passengers taking buses.B．Because city transport has been financially in difficulty.C．Because they take up a lot of road space.D．Because they have polluted the city air.
A．Because there are fewer passengers taking buses.
B．Because city transport has been financially in difficulty.
C．Because they take up a lot of road space.
D．Because they have polluted the city air.
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