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      1. WW > иԇ > иx`Wg~R

        иx`Wg~R

        lrg:2017-01-04Դ:WW

        иxnЌWsČWg~R^۲ѡ@~RxٶȣӰw_иxеĆ~Աwһ㹦~R͌Wg~Rһ㹦~]@ČWg磺animal, organ, timeWg~RָһضWƱ~RijһNarchaeopteryx(ʼB);ijһYnerve cord()ijһvʷrڣCretaceous(׈׼o)ȵһ㹦~иxе@ЩWg~R׌҂xϵK

        wfxеČWg~R֮yҪ棺һ҂俼^кٕijضWƵ~R;ڶWg~Ryͨ~~Yȥœy;҂ܸBĝhZ˼֪磺иxгF^һNKittiwakeBhZֺt@~҂Ҳ] ^İČWg~RӰ҂xٶҲӰ҂B

        ʲôЌWg~R

        ôȻиһTZԇôʲôxЕF˶ČWg~R?@еČWg~Rʲôԇжoκν?

        ȑԓ緶ӢZĿԇ֮һԇWg~ROӋMиxһԭ憖}Ĵ҂ԏиԇı|˼иĴ_ZԿԇиԇĸZӢZDžsӢZҌWČWô@ЩW(жxƻо)ZԿԇ͸ӂڜyԇܷڇĴWh沢ҌWڴWһWxʲô?@ȻǸNnôᘌ@Nиԇx־͑ԓWܷxnWnw׶ɌWgԵĶνMдČWg~R@иxҲF˶ČWg~Rֻ@ӲWǷܿnһmǧ퓵ӢnиxyȻö࣬fxиx²һxӢn;и¶xͿ϶ҲyӢn

        ""Ć}--ǰWg~R

        ǰWg~Rԓ_и漰wʮ֏VȻƌWĿƌWƌWˇgȵȟoFMпԇеČWg~RDzHҲǵЧʵиxµij}}ƫõڿǰWg~Rr҂ֻھr}еČWg~RMһHH"JR~"Ŀ f@ӁeһČWg~RԱCԇrPWg~RXһҊıﻯWнFcarbohydrate(̼ˮ)нFvertebrate(׵)ȡ

        "|"Ć}--Wg~R

        ҂ڿϕrвͬWg~RČӴΣҲ"|"DzͬҪԚw

        һЛ]нoPጻx@Wg~Rֻ""Ϳ磺Among the species of seabirds that use the windswept cliffs of the Atlantic coast of Canada in the summer to mate, lay eggs, and rear their young are common murres, Atlantic puffins, black-legged kittiwakes, and northern gannets

        "common murres", "Atlantic puffins", "black-legged kittiwakes", "northern gannets"҂İČWg~R҂ֻҪxһЩBͿȻĸsքe"C" "A" "BK""N"ӛ֮P}r磺

        According to the passage, which of the following birds conceal their nest?

        (A) Bonaparte's gulls

        (B) Atlantic puffins

        (C) Kittiwake gulls

        (D) Northern gannets

        BCDxֱӌ"A" "BK""N"

        ڶнoPጻx@Wg~R҂HҪ֪""߀ҪжxҕҊWg~Rxጵ̖УxľͬλZľZ̖̖磺

        1. Further burial and slow cementation - a process by which crystals become bound together in a mosaic of intergrown ice crystals - finally produce solid glacial ice

        @ƪ}DZcementation()һ|WgZ̖֮gIJnjcementationĽጶx

        2. The moon may be divided into two major terrains: the Maria (dark lowlands) and the Terrace (bright highlands)

        @һУMaria(º)Terrace()PČWg~R̖֮еIJ@M˽ጡԓµһ}ĿAll of the following are true of the Maria EXCEPT:

        (A) They have small craters

        (B) They have been analyzed by astronomers

        (C) They have a rough texture

        (D) They tend to be darker than the terrace

        xDļnjԓԒ̖еČWg~ጲMеһ

        _đB挦Wg~R

        Wg~RȻһЩyƽrͿόһ_đBǺҪġȻиx鱾|ĽǶȳlģMǽWČW^ôڌW^xn^϶кܶgZİ]Ҋ^Wǰİ֪R׃Ϥ^̡ͨ^nxWЩWg~RŌW֪R

        ͬиxrҲһnW^һЩҪgZ(Wg~R)n(иx)Ǖoጶxģ@ЩҲnjWcҪ⡣cnͬnͶxͻصw̖ʾиxУ҂Ҫw̖ȫһӵȡcWg~RĽጶxһЩҪČWg~R"|"ҲҪôֻҪסиxЌWg~RĿ챾|ƽrme_đټ_挦đBŴҶ܉򹥿иx廨TČWg~R

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