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Unit1NatureinthebalanceSectionAWelcometotheunit&Reading必备知识基础练Ⅰ.单句填空1.Manyspeciesareindangerof(extinct).答案extinction2.(milli

on)ofdollarshavegoneintothebuildingofthisfactory.答案Millions3.Thefishcangrowtoa(long)offourfeet.答案length4.Theislandofferssuchawide(various)

ofsceneryandwildlife.答案variety5.Hopesaredisappearingforthe(survive)ofthemissingclimbers.答案survival6.Sinc

ebadstressis(harm)forus,we’dbettertrytochangeitintogoodstress.答案harmful7.Whenyouaretiredwithstudy,dosomethingforfun.Ithelpsyougetr

elaxed,whichturncanhelpyoustudybetter.答案inⅡ.完成句子1.这事对我们有害还是有益,还有待观察。Whetheritwillisnotclear.答案dousharmorgood2.大块的云团向这里移来。cloudsweremovingtow

ardshere.答案Largemassesof3.教师应设法使课堂富有生气。Ateachershouldtrytotheclass.答案breathelifeinto4.阅读能扩充你的词汇量。Readingcan.答案buildupyourvocabulary5.动物死后,它们的尸体被

分解,养分被送回土壤。Whenanimalsdied,theirbodiesandthenutrientsarereturnedtotheearth.答案arebrokendown关键能力提升练Ⅲ.阅读理解A主题语境:人与自然体裁:说明文Soonenough,w

ewilllosesomeofthemostamazingsitesonEarth!TheGreatBarrierReefRisingairtemperatureswillcauseseatemperaturestorisea

swell.Alllifesupportedbytheoceanswillbeaffectedwiththisshocktotheirecosystem.Coralsaresomeofthemostvulnerablemar

ineanimalsandwearealreadywatchingwholereefsdisappear.TheGreatBarrierReefinAustraliaisnoexceptionandwillcontinuetosh

rinkasthetemperaturesrise!Thesereefsaresomeofthebestintheworldfordiving,buttheywillsoondisappear!VeniceSprawlingacross(横跨)hundreds

ofsmallislandsinNortheastItaly,VeniceisatextremeriskofsinkingintotheAdriaticSea.Risingsealevelsareinfactaseriousthreatt

omanycoastalcitieslocatedatsealevel.Luckyforus,however,Veniceisdevelopingaseriesofseawallstoprotectthecityintimesofhightide.

Glacier(冰川)NationalParkGlacierNationalParkwasoncecoveredbyover150glaciers,butby2005itonlyhadabout27!LocatedinMontana,Canada,this

parkisoveramillionacresandhasahugeplantandwildlifepopulation.Astemperaturesrise,theglaciersandicemelt,whichwillupsettheecosystemssustainingoverathou

sandplantspeciesandhundredsofanimals.TheAmazonThecausebehindthedisappearanceofthesefantasticplacesultimatelycomesdowntohumans.Oure

xpansionusuallyrequirescuttingdownforestsforland,fuelandmaterials,butrarelyconsiderstheconsequences.Theseforestsaresourcesoffoodandmedicinefor

justabouteveryoneontheplanet!Whatwillhappenifwelosethesevaluableplacesandbeautifuldestinations?【语篇解读】本文是一篇说明文。作者向我们介绍了如今

全球变暖所引发的一些问题:我们将失去一些地球上最令人惊奇的地方!1.Accordingtothetext,whatiscausingthecorals’death?A.Risingsealevels.B.Risingseatemperatures.C.Humans’divingactiv

ities.D.Theshrinkage(缩小)oftheirhabitats.答案B解析细节理解题。根据第二段中的“TheGreatBarrierReefinAustraliaisnoexceptionandwillcont

inuetoshrinkasthetemperaturesrise!Thesereefsaresomeofthebestintheworldfordiving,buttheywillsoondisappear!”可知,珊瑚虫死亡的原因是因为海水温度升高,故选B项。2.Whatcanw

einferfromthepartof“Venice”?A.Manyplacesareintheriskofsinkingbelowthesealevel.B.VeniceistheonlycoastalcityofItaly.C

.Venicewillneversinkbecauseoftheprotectionofseawalls.D.ItalyconsistsofhundredsofsmallislandsintheAdriaticSea.答案A解析细节理解题。根据第三段中的“Risingseal

evelsareinfactaseriousthreattomanycoastalcitieslocatedatsealevel.”可知,海平面的升高威胁着很多沿海的城市,故选A项。3.WhatcanwelearnaboutGlacierNationalParkfromthe

text?A.Itdoesn’tsupportanylivingthingsforitscold.B.Itiscoveredbyover150glaciers.C.Plantspeciesandanimalsinithavediedout.D.ItcoversalargeareainMo

ntana.答案D解析细节理解题。根据第四段中的“LocatedinMontana,Canada,thisparkisoveramillionacresandhasahugeplantandwildlifepopulation.”可知冰川自然公园在蒙大拿州占据了很大的面积,故选D项。4.Wh

ichsite’sshrinkingreasondiffersfromtheothersites?A.TheGreatBarrierReef.B.Venice.C.TheAmazon.D.GlacierNationalPark.答案C

解析细节理解题。根据TheGreatBarrierReef中“Risingairtemperatureswillcauseseatemperaturestoriseaswell”和Venice中“Risingsealevelsarein

factaseriousthreat...atsealevel”及GlacierNationalPark中的最后一句可知,这三个景点正在消失的原因是气候变暖。根据倒数第二段前两句可知亚马孙雨林的减少是因为人类领地的扩张

,和以上三个景点正在消失的原因不同。故选C项。B主题语境:人与自然体裁:说明文Buildingafive-starhotelinthemiddleofavaluablewilderness(荒野)withoutdamaging(破坏)theenvironmentmightnotbe

easy,butitisfarfromimpossible.TheKingPacificLodgeinBritishColumbia’sGreatBearRainforestshowsthatifenoughcareandattentionistaken,thetaskispossible.Unl

ikemanyotherhotelbuildingplans,notreeswerecutdownandnolandwaswastedtobuildit.TheLodgedoesnothavethesamelocation(位置)butsitsonafl

oatingboatpulledintotheseabayinMay,tillSeptember.Thosewishingtostayinoneofitsseventeenroomsmustaccessit

byboatorseaplane.EachgueststayingattheLodgeischarged3%tax(税)ontheprotectionofthenaturalresources,butisgiventhechancetoseewhalesandbears.

AndsincethesearethemainattractionsoftheareaandoftheLodge,themanagementknowswellthatinordertostayinbusinesstheymustmaketheareauntouched.In2000,

theLodgemanagementsignedanagreementwiththenative(本土的)Gitga’atpeople.Togethertheyworkforthebenefitofthearea.TheLodgeknowstha

tthenativetribe(部落)istheownersoftheland,soitpaysthetribefortheuseoftheirlandandevensupportsthenativeyoutha

ndemploysthetribe’speople.They,inturn,teachthenewcomersaboutthelocalculture.TheKingPacificLodgeisoneofag

rowingnumberoftourismcompaniesthatmanagetominimizetheirenvironmentaldamagetowintheapproval(批准)ofthelocalgovernmentwh

eretheysetuptheirbusiness.Thesecompaniespaymoreattentiontoenvironmentalprotectionandarecarefultousenaturalresourcesandprotectendangeredan

imals.Realizinghowdestructivetourismcanbe,theywanttoavoidthelove-it-to-deatheffectoftourism.【语篇解读】这是一篇说明文。文章主

要介绍了在一片珍贵的荒野中建造的一座五星级旅馆KingPacificLodge,它坐落在一艘浮动船上,不占用土地,不砍伐树木。为了继续营业,他们必须保持该地区的原貌,同时与当地人签署协议,一起为这个地区的利益而工作。

越来越多的旅游公司试图将对环境的破坏降到最低来表明旅游业可以减少对环境的破坏。5.Fromthepassage,weknowthattheKingPacificLodge.A.followsotherhotels’buildingplansB

.islesspopularamongtouristsC.isfarawayfromanimportantwildernessD.hasbeencreatedaftercarefulconsideration答案D解

析细节理解题。根据第一段可知KingPacificLodge是经过深思熟虑才建立的。故选D项。6.WhichofthefollowingstatementsisTRUE?A.TheKingPacificLodgeisinanareawithoutanytrees.B.TheKingPacificL

odgecanbemovedfromplacetoplace.C.GuestsintheKingPacificLodgecantakepartinprogramsabouttheprotectionofnature.D.GuestsintheKingPacificLodg

ehavetopayextramoneyfortheboattogetthere.答案B解析细节理解题。根据第二段第二句可知KingPacificLodge旅馆可以从一个地方移动到另一个地方。故选B项。7.Acc

ordingtoParagraph3,welearnthatsomeofthenativepeople.A.wanttolearnthenewcomers’cultureB.arenotwillingtoselltheirlandC.areemploye

dbylocalgovernmenttoworkfortheLodgeD.mayhavethechancetoworkattheLodge答案D解析细节理解题。根据第三段可知一些当地人可能有机会在该旅馆工作。故选D项。8.Accordingtothepas

sage,thetouristindustry.A.willalwaysdoharmtotheenvironmentB.careslittleabouttheimportanceofenvironmentallyfriendlytourismC.cando

lessdamagetotheenvironmentD.alwayshasadisagreementwiththelocalgovernment答案C解析细节理解题。根据最后一段可知旅游业对环境的破坏较小。故选C项。Ⅳ.七选五主题语境:人与自然体裁:记叙文Zoeyadmitsitwasalit

tlesadsayinggoodbyetoherfish.1Zoey’sclassatHawthorneElementarySchoolspentmostoftheschoolyearraisingthefishfrom

thetimewhentheywerenothingmorethanlittleeggswitheyes.TheprogramtheHawthornekidstookpartiniscalled“Troutintheclassroom”.2Thekidsat

WilsonMiddleSchoolinFishersvilletookpartintheproject,too.“Igottofeedthemeverymorningandwatchthemgrowup,”saidseventh-graderLaure

nClayton.“Wehavetoprotectthem,orsomeofthefishcouldgoextinct.”Laurenwasright.3Butlater,pollution,overfishing

andlossofnaturalhabitathavepushedsomespeciestothedangerofextinction.Thankstothekidsintheprogram,troutarebeingreintroducedintoriversandst

reamsacrossthecountry.Andbydoingthat,thekidsarehelpingtorestorethelocalecosystems—thenaturalbalancethatexistedbeforehumansdisturbedit.

4Becausethefishareintheirclassrooms,thekidsareresponsibleformakingsurethereiscool,cleanwater,properfoodandproperliv

ingconditionsinthetanks.BythemiddleofMay,theywere“asbigasafinger”.Thatis,theyareoldenoughtobereleasedintoOneidaCre

ek.“Remembertoswimbackheretomeetusandeatthefoodwebring,littletrout.”5A.Thekidscanlearnsomescientificlessonsatschool

.B.Makesurewhenawarmlandsonthesurface,neverbite.C.Finally,Zoeyreadthemgoodbyelettersbeforelettingthemgo.D.Theycan

alsoseehowouractionsaffectthetrout’sabilitytosurvive.E.Butshehonestlythinksit’sgoodthattheyaregoingtoanaturalhome.F.It’

sanationalprojectsupportedbyaconservationgroupcalled“TroutUnlimited”.G.WhenAmericawasfirstfounded,riversandstr

eamsacrossthecontinentwerefilledwithfish.答案1~5EFGAC