小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com高二英语单元测试定心卷能力提升I.阅读理解ASharon,Age22Themostimportantthingtokeepinmindwhengoingintohighschoolistobeyourself.Besides,Idon'tknowwhatyourmiddleschoolwaslike,buthighschoolteacherwillnotcareaboutthingssuchashowmuchhomeworkyoualreadyhaveinonenight.It'sbesttojustlearntodealwiththingsandmanageyourtimewiselysoyoucanachieveeverythingyouneedto.Frank,Aged21Ithinkalmosteverykidfeelsbothnervousandexcitedbeforetheirfirstday.Youwillprobablyloveit.Idid.Youshouldjoininsomesportsoractivitiesthatwillmakeyourhighschoolexperiencemoreenjoyable.Goodluck!Eddie,Aged20WhenIstartedhighschool,Iwasreallynervoustoo,especiallysinceIhadbeenhomeschooledallthroughmiddleschoolanddidn'treallyknowanyone.Isupposethebestadvicewouldbetojustrelax.Thefirstcoupleofdayscanbealittlebithard,butthingswillbecomeeasierbeforeyouknowit.David,Aged19I'mnotgoingtolie.Thefirstdayiskindfrightening.Butyou'llgetusedtoit.Don'tbeafraidof小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comanyone;upperclassmenwillpickonyoumoreifyouletthemknowyou’reafraid.Justtakeiteasy.Makingsomefriendsandstayingwiththemwillgreatlyhelpyougetusedtohighschoolquickly.Afterthefirstweekit'sreallynotbadatall.Don'tworry.1.WhatcanweinferfromSharonabouthighschool?A.Teachersarequitestrict.B.Studentsoftenstayupatnight.C.Teachersprovidelittlecareforstudents.D.Studentsshouldmakegooduseoftheirtime.2.HowdidEddiefeelonhisfirstdayofhighschool?A.Excited.B.Bored.C.Relaxed.D.Worried.3.Whomentionstheimportanceoffriends?A.Frank.B.David.C.Sharon.D.Eddie.BCaliforniahaslosthalfitsbigtreessincethe1930s,accordingtoastudytobepublishedTuesdayandclimatechangeseemstobeamajorfactor(因素).Thenumberoftreeslargerthantwofeetacrosshasdeclinedby50percentonmorethan46,000squaremilesofCaliforniaforests,thenewstudyfinds.Noareawassparedorunaffected,fromthefoggy小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comnortherncoasttotheSierraNevadaMountainstotheSanGabrielsaboveLosAngeles.IntheSierrahighcountry,thenumberofbigtreeshasfallenbymorethan55percent;inpartsofsouthernCaliforniathedeclinewasnearly75percent.Manyfactorscontributedtothedecline,saidPatrickMcIntyre,anecologistwhowastheleadauthorofthestudy.Woodcutterstargetedbigtrees.Housingdevelopmentpushedintothewoods.AggressivewildfirecontrolhasleftCaliforniaforestscrowdedwithsmalltreesthatcompetewithbigtreesforresources(资源).ButincomparingastudyofCaliforniaforestsdoneinthe1920sand1930swithanotheronebetween2001and2010,McIntyreandhiscolleaguesdocumentedawidespreaddeathofbigtreesthatwasevidenteveninwildlandsprotectedfromwoodcuttingordevelopment.Thelossofbigtreeswasgreatestinareaswheretreeshadsufferedthegreatestwatershortage.Theresearchersfiguredoutwaterstresswithacomputermodelthatcalculatedhowmuchwatertreesweregettingincomparisonwithhowmuchtheyneeded,takingintoaccountsuchthingsasrainfall,airtemperature,dampnessofsoil,andthetimingofsnowmelt(融雪).Sincethe1930s,McIntyresaid,thebiggestfactorsdrivingupwaterstressinthestatehavebeenrisingtemperatures,whichcausetreestolosemorewatertotheair,andearliersnowmelt,whichreduce...