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问题 选择题

Li-ping is said      in Beijing, but we don’t know what school she worked in．

A．to have worked

B．to work

C．to be working

D．to have been working

答案

答案：A

单项选择题

A salesman makes a profit of 25% on all sales. How many fax machines will he have to sell for $375 each to make a total commission of at least $ 500 ？（）

A.4

B.5

C.6

D.15

E.20
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多项选择题

产业政策是政府为了弥补"市场失灵"采取的有限的干预政策的总称，包括（）。

A.限价或保护价

B.进口限制政策

C.财政支持政策

D.金融扶植政策

E.规模经济政策
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