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

案extinction2.(million)ofdollarshavegoneintothebuildingofthisfactory.答案Millions3.Thefishcangrowtoa(long)of

fourfeet.答案length4.Theislandofferssuchawide(various)ofsceneryandwildlife.答案variety5.Hopesaredisappearingfor

the(survive)ofthemissingclimbers.答案survival6.Sincebadstressis(harm)forus,we’dbettertrytochangeitintogoodstress.答案harmful7

.Whenyouaretiredwithstudy,dosomethingforfun.Ithelpsyougetrelaxed,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。cloudsweremovingtowardshere.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,theirbodiesand

thenutrientsarereturnedtotheearth.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,wewilllosesomeofthemostamaz

ingsitesonEarth!TheGreatBarrierReefRisingairtemperatureswillcauseseatemperaturestoriseaswell.Alllifesupportedbyt

heoceanswillbeaffectedwiththisshocktotheirecosystem.Coralsaresomeofthemostvulnerablemarineanimalsandwearealreadywatchingwh

olereefsdisappear.TheGreatBarrierReefinAustraliaisnoexceptionandwillcontinuetoshrinkasthetemperaturesrise!Thesereefsaresome

ofthebestintheworldfordiving,buttheywillsoondisappear!VeniceSprawlingacross(横跨)hundredsofsmallislandsinNortheastItaly,Veniceisatextremeriskofsi

nkingintotheAdriaticSea.Risingsealevelsareinfactaseriousthreattomanycoastalcitieslocatedatsealevel.Luckyforus,how

ever,Veniceisdevelopingaseriesofseawallstoprotectthecityintimesofhightide.Glacier(冰川)NationalParkGlacierNationalParkwasonc

ecoveredbyover150glaciers,butby2005itonlyhadabout27!LocatedinMontana,Canada,thisparkisoveramillionacresandhasahugeplantandwildlifepopulatio

n.Astemperaturesrise,theglaciersandicemelt,whichwillupsettheecosystemssustainingoverathousandplantspeciesandhundreds

ofanimals.TheAmazonThecausebehindthedisappearanceofthesefantasticplacesultimatelycomesdowntohumans.Ourexpansionusuallyrequirescu

ttingdownforestsforland,fuelandmaterials,butrarelyconsiderstheconsequences.Theseforestsaresourcesoffoodandmedicineforjus

tabouteveryoneontheplanet!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’divingactivities.D.Theshri

nkage(缩小)oftheirhabitats.答案B解析细节理解题。根据第二段中的“TheGreatBarrierReefinAustraliaisnoexceptionandwillcontinuetoshrinkasthetemper

aturesrise!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.Wh

atcanweinferfromthepartof“Venice”?A.Manyplacesareintheriskofsinkingbelowthesealevel.B.VeniceistheonlycoastalcityofItaly.C.Venicewillneversin

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

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

canwelearnaboutGlacierNationalParkfromthetext?A.Itdoesn’tsupportanylivingthingsforitscold.B.Itiscoveredbyover1

50glaciers.C.Plantspeciesandanimalsinithavediedout.D.ItcoversalargeareainMontana.答案D解析细节理解题。根据第四段中的“Loc

atedinMontana,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.Whichsite’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)theenvironmentmightnotbeeasy,butitisfarfromimpossibl

e.TheKingPacificLodgeinBritishColumbia’sGreatBearRainforestshowsthatifenoughcareandattentionistaken,thetaskispossible.

Unlikemanyotherhotelbuildingplans,notreeswerecutdownandnolandwaswastedtobuildit.TheLodgedoesnothavethesamelocation(位置)butsitson

afloatingboatpulledintotheseabayinMay,tillSeptember.Thosewishingtostayinoneofitsseventeenroomsmustaccessitbyboatorseaplane.Eachgueststayingatt

heLodgeischarged3%tax(税)ontheprotectionofthenaturalresources,butisgiventhechancetoseewhalesandbears.Andsincethesearethemainattractionsoftheare

aandoftheLodge,themanagementknowswellthatinordertostayinbusinesstheymustmaketheareauntouched.In2000,theLodg

emanagementsignedanagreementwiththenative(本土的)Gitga’atpeople.Togethertheyworkforthebenefitofthearea.TheLodgeknowsthatthenati

vetribe(部落)istheownersoftheland,soitpaysthetribefortheuseoftheirlandandevensupportsthenativeyouthandemploysth

etribe’speople.They,inturn,teachthenewcomersaboutthelocalculture.TheKingPacificLodgeisoneofagrowingnumberoftourismcompaniesthatmanagetomin

imizetheirenvironmentaldamagetowintheapproval(批准)ofthelocalgovernmentwheretheysetuptheirbusiness.Thesecompanies

paymoreattentiontoenvironmentalprotectionandarecarefultousenaturalresourcesandprotectendangeredanimals.Realizinghowdestructivetourismcanbe,theywa

nttoavoidthelove-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’b

uildingplansB.islesspopularamongtouristsC.isfarawayfromanimportantwildernessD.hasbeencreatedaftercarefu

lconsideration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.TheKingPacificLodg

eisinanareawithoutanytrees.B.TheKingPacificLodgecanbemovedfromplacetoplace.C.GuestsintheKingPacificLodgecant

akepartinprogramsabouttheprotectionofnature.D.GuestsintheKingPacificLodgehavetopayextramoneyfortheboatt

ogetthere.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.AccordingtoParagraph3,welearnthatsomeofthena

tivepeople.A.wanttolearnthenewcomers’cultureB.arenotwillingtoselltheirlandC.areemployedbylocalgovernmenttoworkfortheLodgeD.mayhavethechancet

oworkattheLodge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.Accordingtothepassage,thetouristindustry.A.willalwaysdoharmtotheenvironmentB.car

eslittleabouttheimportanceofenvironmentallyfriendlytourismC.candolessdamagetotheenvironmentD.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Zoeyadmitsitwasalittlesadsayinggoodbyetoherfish.1Zoey’sclassatHawthorneElementarySchoo

lspentmostoftheschoolyearraisingthefishfromthetimewhentheywerenothingmorethanlittleeggswitheyes.TheprogramtheHawthornekidstookpartiniscalle

d“Troutintheclassroom”.2ThekidsatWilsonMiddleSchoolinFishersvilletookpartintheproject,too.“Igottofeedthemeverymorninga

ndwatchthemgrowup,”saidseventh-graderLaurenClayton.“Wehavetoprotectthem,orsomeofthefishcouldgoextinct.”L

aurenwasright.3Butlater,pollution,overfishingandlossofnaturalhabitathavepushedsomespeciestothedangerofextinction.Thankstothekidsi

ntheprogram,troutarebeingreintroducedintoriversandstreamsacrossthecountry.Andbydoingthat,thekidsarehelp

ingtorestorethelocalecosystems—thenaturalbalancethatexistedbeforehumansdisturbedit.4Becausethefishareintheirclassrooms,th

ekidsareresponsibleformakingsurethereiscool,cleanwater,properfoodandproperlivingconditionsinthetanks.Bythem

iddleofMay,theywere“asbigasafinger”.Thatis,theyareoldenoughtobereleasedintoOneidaCreek.“Remembertoswimbackheretomeetusandeatthefoo

dwebring,littletrout.”5A.Thekidscanlearnsomescientificlessonsatschool.B.Makesurewhenawarmlandsonthesurface,neverbite.C.Finally,

Zoeyreadthemgoodbyelettersbeforelettingthemgo.D.Theycanalsoseehowouractionsaffectthetrout’sabilitytosurvive.E.Butshehonest

lythinksit’sgoodthattheyaregoingtoanaturalhome.F.It’sanationalprojectsupportedbyaconservationgroupcalled“TroutUnlimited”.G.WhenAmericawasfirst

founded,riversandstreamsacrossthecontinentwerefilledwithfish.答案1~5EFGAC