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W(xu)W(wng) > иԇ > иԇx~RB

иԇx~RB

l(f)rg:2017-07-26݋׿s

(yng)îI(y)W(xu)W(wng)Ӎ
     иx~R俼һֱԁDZ^ܠhԒ}ЩJиx~R俼ҪӢZļˮƽЩ˄tJиx~ԽԽ@ɷNe`҂Ԕ˽иx~RЌI(y)~RĜʂϣ
 
    иxҪ֪һcI(y)~R@^Ǻy܌~R
    1.иx~RƫڌI(y)|(zh)ԭ@ӣиԇǞ˿ӢZˮƽܷCڴW(xu)W(xu)(x)I(y)֪R˿ă(ni)ƫ،W(xu)g(sh)ķxҲĴW(xu)nĺ׃(ni)xȡڱ~ĕr?q)ڌW(xu)g(sh)~

    2.иxČI(y)~Ry@cҲǺȻģиһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_F(xin)ǿă(ni)˼Ժ׵ز³eӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһԭ䡣@Ԓеcetaceanһ^֌I(y)o豳Ć~ֻҪJRwhalesdolphinsmammals֪cetaceanˮ()@ஔ(dng)֪cetacean˼Ҫӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧѾڱ@NDĆ~Ǻֵܲõ
 
   3. иxҪ6ϵ~RҪӛõČI(y)~R^ҪѾƧČI(y)~RϣDzиxă(ni)иx~R俼ҪȲpҕҲ܁yһͨxıҵ俼cиxͿõMķ֔(sh)

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