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P(gun)ھӌӴ߉P(gun)ϵͻƷ
1|TPOԭ
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2 ՌW(xu)ƷLy
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+ƪ½Y(ji)(gu)
҂+ƪµĽY(ji)(gu)ڴ֮ǰ҂һ±оӵ˼(1)@ȻCDz(2)ͨ^ͨ^w(3)C߀[زסIJ(4)c...ӲͬһֻL~Lಢ(5)C˽⣬ͨ^ʯӛ䛫@õ(6)ߵIJ()CôB?(7)ֱܳʬF(xin)朽ӵĻʯűl(f)F(xin)
ǰ䣬ڏ{(dio)CIJ;ľ_ʼ漰Դ};f˽Դ};;oԵO(sh);߾˽;Ĵ_J(rn)ʹ_
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(bio)}ƪJ(rn)Rķ
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1. In paragraph 1, what does the author say about the presence of a blowhole in cetaceans?
It clearly indicates that cetaceans are mammals.
It cannot conceal the fact that cetaceans are mammals.
It is the main difference between cetaceans and land-dwelling mammals.
It cannot yield clues about the origins of cetaceans.
2. Which of the following can be inferred from paragraph 1 about early sea otters?
It is not difficult to imagine what they looked like.
There were great numbers of them.
They lived in the sea only.
They did not leave many fossil remains.
xA(ch)Ҏ(gu)
1 oԼһ_schedule
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2 ģ
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