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问题
单项选择题
困难产商品支出中哪一项多于平均水平（）
A．日用品
B．衣着商品
C．书报杂志
D．文娱用品
答案
参考答案：
C
选择题
Our game of basketball _____. We had been playing for about half an hour when it started to rain heavily.
A. has interrupted
B. had interrupted
C. was interrupted
D. had been interrupted
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名词解释
市场调查人员
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