A.the characteristics of American newspapers
B.the development of American newspapers
C.the functions of American newspapers
D.the merits and shortcomings of American newspapers
A.Climate Change in the Arctic
B.How to Protect the Environment
C.The Arctic Is Home to Polar Bears
D.Polar Bears in Danger
A.On land.
B.In open water.
C.In. openings in the sea ice.
D.At the bottom of the sea.
A.adults
B.babies
C.hunters
D.enemies
A.Saving energy.
B.Conducting scientific research.
C.Seeking international cooperation.
D.Saving polar bears and their home.
A.bus drivers who weren't reckless
B.driving alone
C.a television set on the bus
D.no billboards along the road
A.exciting
B.comfortable
C.tiring
D.boring
A.are heading for
B.are making
C.are avoiding
D.are creating
A.in dark
B.in the dark
C.in a darkness
D.in darkness
A.two-thousand dollar
B.two thousand dollars
C.two-thousand-dollar
D.two-thousand-dollars
A.in
B.as
C.for
D.at
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