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`иx}еČWg~R

rg2021-01-23 09:37:31 иԇ

`иx}еČWg~R

ʲônjWg~R

`иx}еČWg~R

иxnЌWsČWg~R^۲@~RxٶӰw_иxеĆ~Աwһ㹦~R͌Wg~Rһ㹦~]@ČWg磺animal, organ, timeWg~RָһضWƱ~RijһNarchaeopteryx(ʼB)ijһYnerve cord()ijһvʷrCretaceous(׈׼o)ȵһ㹦~иxе@ЩWg~R׌҂xϵK

wfxеČWg~R֮yҪ棺һ҂俼^кٕijضWƵ~RڶWg~Ryͨ~~Yȥœy҂ܸBĝhZ˼֪磺иxгF(xin)^һNKittiwakeBhZֺt@~҂Ҳ] ^İČWg~RӰ҂xٶҲӰ҂B(ti)

ʲôЌWg~R

ôȻиһTZԿԇôʲôxЕF(xin)˶ČWg~R@еČWg~Rʲôԇжoκνأ

ȑԓ緶ӢZĿԇ֮һԇWg~ROӋMиxһԭ憖}Ĵ҂ԏиԇı|˼иĴ_ZԿԇиԇĸZӢZDžsӢZҌWČWô@ЩW(ж(sh)xƻо)ZԿԇ͸ӂڜyԇܷڇĴWh(hun)沢ҌWڴWһWxʲô@ȻǸNnôᘌ@Nиԇx־͑ԓWܷxnWnw׶ɌWgԵĶνMдČWg~R@иxҲF(xin)˶ČWg~Rˡֻ@ӲWǷܿnһmǧ퓵ӢnиxyȻö࣬fxиx²һxӢnǣи¶xͿ϶ҲyӢn

""Ć}-ǰWg~R

ǰWg~Rԓ_и漰wʮ֏VȻƌWĿƌWƌWˇgȵȟoFMпԇеČWg~RDzHҲǵЧʵиxµij}}ƫõġڿǰWg~Rr҂ֻھr}еČWg~RMһHH"JR~"Ŀˣ f@ӁeһČWg~RԱCԇrPWg~RXһҊıﻯWнF(xin)carbohydrate(̼ˮ)нF(xin)vertebrate(׵)

"|"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~Rxጵ̖УxľͬλZľ䣬Z̖̖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˽ԓµһ}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(ti)挦Wg~R

Wg~RȻһЩyƽrͿόһ_đB(ti)ǺҪȻиx鱾|ĽǶȳl(f)ģMǽWČW^ôڌW^xn^϶кܶgZİ]Ҋ^Wǰİ֪R׃Ϥ^ͨ^nxWЩWg~RŌW֪R

ͬиxrҲһnW^һЩҪgZ(Wg~R)n(иx)Ǖoጶx@ЩҲnjWcҪcnͬǣnͶxͻصw̖ʾиx҂Ҫw̖ȫһӵȡcWg~RĽጶxһЩҪČWg~R"|"ҲҪôֻҪסиxЌWg~RĿ챾|ƽrme_đټ_挦đB(ti)ŴҶ܉򹥿иx廨TČWg~R

`иx}еČWg~RP£

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