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    иW(xu)(x)Ӌ(j)

    ᘌһ|иԇցvӷ俼Ĵ_һ(g)y}СռиW(xu)(x)Ӌ(j)҅bϣԎҪ

    и܌W(xu)(x)Ӌ(j)

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    r(sh)g^̫죬׌⧲҂Ĺͬr(sh)ҲڲµǕr(sh)_ʼӋ(j)ˡW(xu)(x)MӋ(j)s֪ԓՈlСʹĺи܌W(xu)(x)Ӌ(j)gӭҷ

    ԭt

    1(jin)ÿһ죬һпõĕr(sh)gW(xu)ӢZ]г֮ԺČW(xu)(x)ʹĕr(sh)һжǿՄ

    2ÿ һƪ£Դžչ_һČW(xu)(x)

    3 fxg(xing)Ҫ f

    4|(zh) ص׸㶮Ҫôϲ؝؝(sh)(sh)ͰnjW(xu)ӢZıؽ(jng)֮·

    5ĕr(sh)gW(xu)ӢZ؏(f)

    6 ǂ(g)W(xu)(x)ӢZĺ÷Ҫ^m(x)ӏ(qing)

    7˯W(xu)ӢZ

    8ץסһ׽̲ҪäĿĸQ̲ġ

    9ÿW(xu)(x)ӢZҪԔ(x)еӋ(j)횈(jin)Q(zh)У]κν

    10Լһ܉?q)WӢZ

    (xing)h

    (һ) 

    1ĩÿ10001200 һƪҵĶ ķ^̣P(gun)I }.

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    3ĩһӰ(f)(x)̓(ni)zһ܁ČW(xu)(x)Ӌ(j)(zh)r

    4ҕ  o(sh)顣ھ Һصf]ʲôScientificAmericanõˡZٿ@(g)ӕr(sh)g̣ FFr(sh)g̫LĶӷr(sh)g̫Чʾ͵ֵܷTOEFLҪnjW(xu)g(sh)ϵ°l(f)F(xin)ʲôҲڷeۿƼӢZ еij~

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    Ѹһգ۾^ȥˣӭ҂ȵµ(zhn)Ǖr(sh)oāúÌӋ(j)ˡôôƶӋ(j)СĺиW(xu)(x)Ӌ(j)Hһɡ

    и4ֽM@4(g)ǰڶһĜ(zhn)䡣yºώXX꺮иW(xu)(x)Ӌ(j)

     иɹcP(gun)IhһǻA(ch) ӏ(qing)Ҫ׌Լm(yng)ӢZ h(hun)˽Լ B(ti) + Ӗ(xn)ÿĩ ϵyҪһЩҵmԼ ɺͷҪᘌԇ }͵Ӗ(xn)m(yng)и }Ǽӏ(qing)AҪ}ģM}ȥyԇ(yn)޶r(sh)gȫ ֺȥM(jn)з

    иxԇ~RҪܸ?yn)~Rஔ(dng)hW(xu)oԼӆ~RW(xu)(x)Ŀ(bio)Ҏ(gu)ÿ챳30(g)~һ܏(f)(x)Y(ji)һε~r(sh)Ҫעͬx~x~ČW(xu)(x)࿂Y(ji)e}r(sh)Ҫ}Ŀٵc}ĿP(gun)ă(ni)ݣ˼xxٶȡĕr(sh)һҪoԼޕr(sh)иǙC(j)Lr(sh)gXLƪӢZ•(hu)m(yng)ƽr(sh)ˌϵ.}Ŀ(x)Xx£g[W(wng)վҲDZ

    Z(x)ķܶ҂(g)nһv•x߀ھW(wng)ЩP(gun)lҕlLJqՓِxeȣW(xu)(x)?ni)κҪַdzλUʽ͵ȡҪ}Ӗ(xn)ĕr(sh)ӛPӛԼvԒ˼·_ʼf

    иW(xu)(x)Ӌ(j)ԓôƶ

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    иW(xu)(x)Ӌ(j)ԓƶ

    S(jng)(j)ٰl(f)չÿиԇͥĿҲԽԽ_ʼ(zhn)俼ԇĿ(hu)ԃґ(yng)ԓôƶиW(xu)(x)Ӌ(j)

    @Сoṩһ(g)mԵď(f)(x)Ӌ(j)λѿԸ(j)ԼrM(jn){(dio)ϣԎѸM(jn)俼B(ti)

    и(f)(x)·֞һŽׂ(g)AΣ

    1. ˽иԇ(bo)иԇʲôô

    2. ~Z쾚

    3. Ќ(sh)߸(xing)

    4. ģ_c©a(b)ȱ

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    1. 俼r(sh)gձ^LoԼֺAκĿ(bio)Ŀ(bio)LĿ(bio)һһкã

    2. 俼ڲ(hu)?yn)鉺ߕr(sh)goȶy

    һAΣ˽иԇ

    @һAҪõ飺

    1P(gun)ڈ(bo)

    A(y)һԼ(f)(x)ĕr(sh)gһ(g)£ע~̖xλ҈(bo)?yn)鿼λһyRr(sh)ȻQҪȰѿλxҲƶܵĂ俼Ӌ(j)

    2P(gun)иԇҪ

    һJ(rn)xOGx u֘(bio)(zhn)c(din)Pӛ

    *OGӰOGXTPO@ӼʡX֏һ_ʼ呟ԼLr(sh)gX}

    ڶAΣ~Z쾚

    @һAҪõ飺

    1~

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    1ÿ3Сr(sh)~r(sh)g(dng)Ȼ@3Сr(sh)Bm(x)3Сr(sh)?yn)˱עĕr(sh)gǺ̵ܶBm(x)3Сr(sh)~䌍(sh)ܶr(sh)gM(fi)@3(g)Сr(sh)(yng)ԓɢ_һСr(sh)~~c(din)eģڱһСr(sh)~c(din)e@Чʾ

    230犕r(sh)gY(ji)nă(ni)t@һͦ^ȥ'Ҳͦ^ȥӛˎׂ(g)ЦԒ@һľ^ȥώ@Щ(jng)(yn)ܶ඼㮔(dng)r(sh) ]X}l(f)X@(g)ϢĿFǺzώ(dng)r(sh)wvʲôѽ(jng)ӛˣһҪСr(sh)һ½ĹPӛ@Ӳŕ(hu)ի@!

    3߀ʣµ2(g)Сr(sh)ĕr(sh)gҿ@ӣ

    (1)

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    30犣1ƪ3(g)ͬW(xu)/xh(yun)Z潛(jng)(ҲһZһgM(jn))

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    30 Ǭ߼ 

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    1Сr(sh)2ƪx e(cu)}

    301(g) section e(cu)}

    ͨ^һٵиӖ(xn)ňW(xu)(x)ԼŬ@(g)һ׌˜\

    иW(xu)(x)Ӌ(j)

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    (j)֠ÿž֪˼ԇǛ]gƵģһ(xing)(sh)Ժ܏(qing)ZԿԇЌW(xu)g醚vӢZe۵Ȏ׷ԭ俼^߀ҪŬ͸ĕr(sh)gС㎧ռĸиW(xu)(x)Ӌ(j)gӭx

    ˼俼Ӌ(j)1(qing)ӢZA(ch)

    ˼džμđ(yng)ԇͿԇԣǰRr(sh)_Ďr(sh)gSԒڿǰ6(g)ҵĕr(sh)gƶČW(xu)(x)Ӌ(j)

    ӢZA(ch)ЌW(xu)Ҫ~Rķeۺ\(yn)7֞Ŀ(bio)Ì~RU(ku)䵽7000㿼6ôّ(yng)ԓ4000ϵĆ~ُI^(qun)˼~Rӛֵָڱ~r(sh)ֻǝM˽~ıӺx]ă(ni)x˽~˼Ϳڌ ft߀ҪՆ~ʹã翼ڌr(sh)ܱ_(d)W(xu)(x)֪R@(g)˼ֻdžμb~˼Ԓôпܕ(hu)study knowledgelearn knowledge@ӵe(cu)`_(d)ٱڿԇr(sh)f|ȻSڱ_(d)touch nature֪صı_(d)(yng)ԓexperience nature, enjoy naturebe exposed to natureŒ(sh)ҪףӢZ͝hZ֮gdžμc֮gֱӌ(yng)Ă_(d)(x)T÷ķe

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    1ÿ3Сr(sh)~r(sh)g(dng)Ȼ@3Сr(sh)Bm(x)3Сr(sh)?yn)˱עĕr(sh)gǺ̵ܶģBm(x)3Сr(sh)~䌍(sh)ܶr(sh)gM(fi)@3(g)Сr(sh)(yng)ԓɢ_һСr(sh)~~c(din)eڱһСr(sh)~c(din)e@Чʾ

    230犕r(sh)gY(ji)n'(ni)t@һͦ^ȥҲͦ^ȥˣӛˎׂ(g)ЦԒ@һľ^ȥώ@Щ(jng)(yn)ܶ඼㮔(dng)r(sh) ]X}l(f)X@(g)ϢĿFǺzώ(dng)r(sh)wvʲôѽ(jng)ӛˣˣһҪСr(sh)һ½ĹPӛ@Ӳŕ(hu)ի@!

    3߀ʣµ2(g)Сr(sh)ĕr(sh)gҿ@ӣ

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    30犣1ƪģ3(g)ͬW(xu)/xh(yun)Z潛(jng)(ҲһZһgM(jn))

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    1Сr(sh)2ƪx e(cu)}

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    ͨ^һٵиӖ(xn)ňW(xu)(x)ԼŬ@(g)һ׌˜\

    һ(g)и(f)(x)W(xu)(x)Ӌ(j)

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    иԇ(zhn)ĕr(sh)кܶW(xu)ӌԼď(f)(x)Ӌ(j)֪κŕr(sh)gץc(din)Сһһ(g)и(f)(x)W(xu)(x)Ӌ(j)ϣ

    ڜ(zhn)иԇĕr(sh)ҪoԼһ(g)_ĶλüֱͶ뵽æČW(xu)(x)ȥ˽ԼͿԇ_ʼ(f)(x)ĵһ@ӿ׌ԼҵW(xu)(x)͂俼ķġт俼и(dng)һ(zhn)ԒôҪ֪֪ˡԼĿǰʲôӵӢZˮƽʲôr(sh)ԇҪ(zhn)ЩܵČW(xu)(x)Ҫ_(d)һ(g)ӵˮƽԼÿͶٕr(sh)gĿǰ(yu)ݺӄЩȵ

    1ûA(ch)֪֪

    ܵ}ڴûA(ch)иԇă(ni)Kֲ̡ԇc(din)ԼR(zhn)ҪД(sh)Ҳ֮ď(f)(x)Ü(zhn)䡣һܵ΄(w)ƺĥ`񹤣õĻA(ch)ǿ߷ֵĻʯ

    A.ٷָ(do)

    ㌦иԇă(ni)ݺʽ߀˽ôh㌢иĹٷָ(do)(OG)J(rn)xһ(ӢpZ棬øŶ)߀Ҫ嵽ĕr(sh)gѕеĘ}ȵȶһԼڷ?jn)?sh)ϵλǸǵ(yu)ӄݷքeԒfúã֪֪˷ّܰ(zhn)!

    B.~

    оOG֮⣬һ(xing)dzҪĹҲҪĵһ_ʼǾǡ~!oՓx Z߀nje~Rh(yun)@_һ(g)Ex֣~RǸ|(zh)Ч}ĿıC;ڌr(sh)ώׂ(g)ָ߶֜(zhn)_~RǸ(hu)׌\~Ҳǿֵ֮ġһЩ̫õ~Ͳذ÷ӛ̫Ԕ(x)ֻӛס˼ԇ}гF(xin)r(sh)J(rn)ɡһЩP(gun)I~RT(dng)~ͳ~tҪվw÷(hu)(hu)

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    230犕r(sh)gY(ji)nă(ni)t@һͦ^ȥҲͦ^ȥӛˎׂ(g)ЦԒ@һľ^ȥˣώ@Щ(jng)(yn)ܶ඼㮔(dng)r(sh) ]X}l(f)X@(g)ϢĿFǺzώ(dng)r(sh)wvʲôѽ(jng)ӛһҪСr(sh)һ½ĹPӛ@Ӳŕ(hu)ի@!

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    ͨ^һٵиӖ(xn)ňW(xu)(x)ԼŬ@(g)һ׌˜\

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    ѽ(jng)(bo)иԇͬW(xu)֪ôӕԼČW(xu)(x)Ӌ(j)Сõи(f)(x)W(xu)(x)Ӌ(j)gӭx

    Ҏ(gu)(g)µиW(xu)(x)Ӌ(j)1

    и߀ʣ(g)•r(sh)ČW(xu)(x)Ҏ(gu)£

    ˽иԇԇ(bo)˽иԇʲôô

    ~ 㶨Z

    ᘌиԇ(zhn)

    _c©a(b)ȱ **(g)¸㶨122-3(g)¸㶨34

    ÿ(g)AպmķɡA1A2ע_俼ߏ·xһ~ԴƌW(xu)x(zhn)_~R҈(jin)ֱꣻ

    A3A4ҪעᘌԇM(jn)о(x)LyӖ(xn)

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    nԒf(sh)Ԓοijɷ֡F(xin)ڵӖ(xn)䌍(sh)ͦˮώnһ'r(sh)gvͿԇ]ʲô(sh)H“(lin)ϵĖ|

    иǂ(g)ZԿԇһҪ~һ㿼иĶ(hu)SAT GREһ(g)yȸĿԇǂ(g)~

    c(din)ҪB(yng)ZxԒƽr(sh)xЩ|ӢĵĈ(bo)s־ԣx࿴ҲЎ ԒǶ ʹ (f) (x)TԶ࿴Mֵ°ʲôW(xu)(x)bһƽr(sh)쾚˾ͺ(һҪٶȺƴ)Zһ_ʼҪfă(ni)݌֮ ٸM(jn)ֱMֹȻѭuM(jn)͕(hu)Ч