иxI(y)~Rôk
иxԇ_Ҫϵ~Rܵõ^ߵķ֔(sh)ʲô?
һиxһN}Ŀ~R}~R}@ӵһN}JR@~Ϳ϶ܺܿ㲻JR@~ǽ^ӌƔ࣬M˺ܶrg߀õe`ĽYfQ~R}JR@~
ô~R}иxԇожҪ?ռ25%ϵıOGfÿƪx}3-6~}(ÿƪиxֻ13}ѽ)Ҋ~R}Ҫ--ֻҪ~R}QpиxеһK֔(sh)߀}(ji)ʡˌFĕrg
иx~R}п~Rʲôy?6~RҲyһЩԞ˱UҊ~ˮƽҪ_6@ӾͿxІ~}ķ֔(sh)ÝM
PиxٶȵĆ}ЇиxһϵKڕrgãxµ`ٶ̫ˡfJR~ܿxf~̫СxٶȱȻۿ!
ڶиxҪ֪һcI(y)~R@^Ǻy܌~Rһиx~RƫڌI(y)|ģԭ@ӣ
иxԇǞ˿ӢZˮƽܷCڴWWI(y)֪R˿ăƫ،WgķxҲĴWnĺ׃xȡڱ~ĕrڌWg~Roһ̶ȵҕǺ
иxČI(y)~Ry@cҲǺȻģиһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_F(xin)ǿă˼Ժز³eӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһԭ
@Ԓеcetaceanһ^I(y)o豳Ć~ֻҪJR whalesdolphinsmammals֪cetaceanˮ()Dz@ஔ֪ cetacean˼Ҫӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧѾڱ@NDĆ~Ǻֵܲõ
иxI(y)~RôkP£
̘I(y)и xI(y)~R09-04
иx~R09-06
иx~R09-02
иx~Rx08-31
иx~R08-28
x~ôk09-27
̘I(y)и xֲWI(y)~R09-07
W̘I(y)и xI(y)~R09-04
иx~Rӛ08-08