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.
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In the author’s opinion, who contribute(s) to the progress of human society
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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