(yng)îI(y)W(xu)W(wng)Ӎ
иx~R俼һֱԁDZ^ܠ(zhng)hԒ}ЩJ(rn)иx~R俼ҪӢZļ(j)ˮƽЩ˄tJ(rn)иx~ԽԽ@ɷNe(cu)`҂?c)?x)˽иx~RЌI(y)~RĜ(zhn)ϣ(du)
иxҪ֪һc(din)I(y)~R@^Ǻy܌~R
1.иx~RƫڌI(y)|(zh)ģԭ@ӣиԇǞ˿ӢZˮƽܷCڴW(xu)W(xu)(x)I(y)֪R(sh)˿ă(ni)ƫ،W(xu)g(sh)ķxҲĴW(xu)nĺ(jin)׃(ni)xȡڱ~ĕr(sh)?q)ڌW(xu)g(sh)~
2.иxČI(y)~Ry@c(din)ҲǺȻ?yn)иһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_(sh)(hu)F(xin)ǿă(ni)˼Ժز³e(g)ӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһ(g)ԭ@Ԓеcetaceanһ(g)^I(y)o豳Ć~ֻҪJ(rn)R(sh)whalesdolphinsmammals֪cetaceanˮ()(dng)(dng)@ஔ(dng)֪cetacean˼Ҫӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧѾڱ@NDĆ~Ǻֵܲõ
3. иxҪ6(j)ϵ~RҪӛ(du)õČI(y)~R^(du)ҪѾƧČI(y)~Rϣ?yn)Dzиxă(ni)иx~R俼ҪȲpҕҲ܁yһͨxıҵ俼c(din)иxͿõMķ?jn)?sh)
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2.иxČI(y)~Ry@c(din)ҲǺȻ?yn)иһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_(sh)(hu)F(xin)ǿă(ni)˼Ժز³e(g)ӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһ(g)ԭ@Ԓеcetaceanһ(g)^I(y)o豳Ć~ֻҪJ(rn)R(sh)whalesdolphinsmammals֪cetaceanˮ()(dng)(dng)@ஔ(dng)֪cetacean˼Ҫӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧѾڱ@NDĆ~Ǻֵܲõ
3. иxҪ6(j)ϵ~RҪӛ(du)õČI(y)~R^(du)ҪѾƧČI(y)~Rϣ?yn)Dzиxă(ni)иx~R俼ҪȲpҕҲ܁yһͨxıҵ俼c(din)иxͿõMķ?jn)?sh)
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