иxI(y)~Rôk
ȣиxԇ_(sh)Ҫ(j)ϵ~Rܵõ(du)^ߵķ?jn)?sh)ʲô?

һ?yn)иxһN}Ŀ~R}~R}@ӵһN}J(rn)R(sh)@(g)~Ϳ϶(du)ܺܿ(du)㲻J(rn)R(sh)@(g)~ǽ(jng)^ӌƔ࣬M(fi)˺ܶr(sh)g߀õe(cu)`ĽY(ji)fQ~R}J(rn)R(sh)@(g)~
ô~R}иxԇожҪ?ռ25%ϵıOGfÿƪx}3-6(g)~}(ÿƪиxֻ13(g)}ѽ)Ҋ~R}Ҫ--ֻҪ~R}QˣpиxеһK?jn)?sh)߀}(ji)ʡˌFĕr(sh)g
иx~R}п~Rʲôy?6(j)~RҲyһЩġԞ˱U(xin)Ҋ~ˮƽҪ_(d)6(j)@ӾͿxІ~}ķ?jn)?sh)ÝM
P(gun)иxٶȵĆ}(du)Ї(gu)иxһϵKڕr(sh)gxµ`ٶ̫ˡfJ(rn)R(sh)~ܿxf~̫СxٶȱȻۿ!
ڶиxҪ֪һc(din)I(y)~R@٣^Ǻy܌~Rһиx~RƫڌI(y)|(zh)ģԭ@ӣ
иxԇǞ˿ӢZ(y)ˮƽܷCڴW(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)~Roһ̶ȵҕǺġ
иxČI(y)~Ry@c(din)ҲǺȻģ?yn)иһTӢZ(y)ˮƽԇֲnjI(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)Dz(dng)@ஔ(dng)֪ cetacean˼ˡҪӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧѾڱ@NDĆ~Ǻֵܲõġ
иxI(y)~RôkP(gun)£
̘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 xֲW(xu)I(y)~R09-07
W(xu)̘I(y)и xI(y)~R09-04
иx~Rӛ08-08