单项选择题

A．are very rude
B．keep talking to him when he is busy
C．only buy small things
D．bargain with him too much
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单项选择题
A．The former Soviet Union.B．Russia.C．The IAEA．D．The U.S.
A．The former Soviet Union.
B．Russia.
C．The IAEA．
D．The U.S.
填空题
family
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