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P(gun)ھӌӴΡ߉P(gun)ϵͻƷ
1|TPOԭ
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2 ՌW(xu)ƷLy
(j)TõTPOLyزģھеP(gun)ϵ~R߉~RԼՌW(xu)ƷTPOxԭı
+ƪ½Y(ji)(gu)
҂+ƪµĽY(ji)(gu)ڴ֮ǰ҂һ±оӵ˼(1)@ȻCDz(2)ͨ^Σͨ^w(3)C߀[زסIJԡ(4)c...ӲͬһֻL~Lಢ(5)C˽ͨ^ʯӛ䛫@õ(6)ߵIJ()CôB?(7)ֱܳʬF(xin)朽ӵĻʯűl(f)F(xin)
ǰڏ{(dio)CIJ;ľ_ʼ漰Դ};f˽Դ};;oԵO(sh);߾˽;Ĵ_J(rn)ʹ_
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(bio)}ƪJ(rn)Rķ
1W(xu)Д혳D(zhun)ȡеȻ߉P(gun)ϵ
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3һЩõ߉P(gun)ϵ~RP(gun)ϵD(zhun)Qж
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ӌӴθ½Y(ji)(gu)˽ҿɂ}ĿԾͿԅӻ҂ڴxxe2λͳһġ~RփԡŶ
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
Գÿ쾫xՌW(xu)ƷTPOԭģ(f)(x)얹~y~ӽY(ji)(gu)Լƪ¡ԳֶʮһͻwMŶ~
2
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