单项选择题

A．Sex contact.
B．Blood exchange.
C．Drug abuse.
D．Casual contact.
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单项选择题
A．To restore our atmosphere.B．To stop refrigerator-use.C．To prevent people from killing insects.D．To restrict the use of some pollutants that harm the ozone layer.
A．To restore our atmosphere.
B．To stop refrigerator-use.
C．To prevent people from killing insects.
D．To restrict the use of some pollutants that harm the ozone layer.
单项选择题
A．A kind of feeling.B．The seafood banquet.C．A kind of seasoning.D．Tom Markham’s new house.
A．A kind of feeling.
B．The seafood banquet.
C．A kind of seasoning.
D．Tom Markham’s new house.
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