单项选择题

A) industry C) business
B) trade D) manufacturing

A．industry
B．trade
C．business
D．manufacturing
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单项选择题
A) simply C) easily B) modestly D) plainly
A．simply
B．modestly
C．easily
D．plainly
单项选择题
A) but C) however B) whereas D) while
A．but
B．whereas
C．however
D．while
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