[今日更新]安徽省合肥市经开区2024年九年级学情调研试卷（二）.物理试卷答案

[今日更新]安徽省合肥市经开区2024年九年级学情调研试卷（二）.物理试卷答案试卷答案,我们目前收集并整理关于[今日更新]安徽省合肥市经开区2024年九年级学情调研试卷（二）.物理试卷答案得系列试题及其答案，更多试题答案请捕获只因吧

[今日更新]安徽省合肥市经开区2024年九年级学情调研试卷（二）.物理试卷答案试卷答案

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ButeocleverwhenitomforthemselvesTheycetroublebyivingnreofmpec同种个体)withurieForme,aceI%Cad8veryod)ideshadrodBuththeousthivinHowthsWellthesumpnourishedbyitsneighborwithnutrientsfromtherootsystem.andhadbeenforatleast400years!Whydodosuhathing?Itmbettertotherrdtheforstitprotectsthemfromstorms,providestherightmicroclimateandwarnsthemofattacks.28.Whydoestheauthormentionthethreeoaktrees?A.Toillustratetreescanlearnfromexperiences.B.Toshowtreescanmakeindependentdecisions.C.Toexplaintreesarequitesupportiveofeachother.D.Toprovetreeshavethesamepersonalitiesashumans.29.Accordingtothetext,whichofthefollowingbestdescribesgeneralfeaturesoftrees?A.Anxiousandbold.B.Smartandadventurous.C.Helpfulandwell-behaved.D.Adaptableandsupportive.30.Whatdoestheunderlinedphrase"dosuchathing"mean?A.Givewarnings.B.Offerassistance.C.Dependonothers.D.Providenutrients.31.Wheredoesthistextmostprobablycomefrom?A.Asciencebook.B.Atraveljournal.C.Apublielecture.D.AnexperimentreportDTheUSspaceageneyNASAhasrevealedanastonishingpicturerevealingnewsecretsoftheEarth'shomegalaxy(),theMilkyWay.Thesunisjustoneofhundredsofbillionsofstarsthatformthehugeshapeofourgalaxy.OursolarsystemsitsinaremoteregionbutthenewimagefocusesonthecenteroftheMilkyWay,a"noisy"areabecauseofallthecrowdedstars.Lightfromthisregiontakesabout26.000yearstoreachEarth.Forcomparison,lighttakesjusteightminutestoreachusfromthesun.Theresearchersusethedatacollectedbytwotelescopesthatseetheskyinwaysthatareverydifferentfromthevisiblelightoureyescanseetoformthenewimage.Mostofthedatacomesfrom370differentpicturestakenoverthepast20yearsbyNASA'sChandraXObservatory.ThissatellitetelescopedetectsX-raysoutinspace.X-raysareaformofradiationthatissentoutwhenviolenteventsheatmattertotemperaturesofmillionsofdegrees.OtherdatacomesfromtheMeerKATtelescopeinSouthAfrica,whichcandetectradiowavesfromspace.ThesewaveshavemuchlessenergythanX-rays.Theyareusuallyproducedbycoolermaterial,suchashugecloudsofgasbetweenthestars.Thebrightestsourcesineludeneutronstarswhicharethecoresofhugestarsthatranoutoffueandcolapsedtocity-sizedballsofsuperhotmatter.Manyneutronstarsandblackholesjetoutgasesthatappearinthepictureaspurplestreaks().Powerfulmagneticfieldsitheareacausethejetstobendastheygetfurtherfromtheirsoure.AstronomerDDanielWanghhasworkedontheimgevethepastyear,saidthenewpicturedescribed“aviolentorenergeticecosystem”.【23模拟调研·英语（一）第5页（共8页）LLY】

(1)用螺旋测微器测量电阻丝直径时,发现所用螺旋测微器不能归零。测微螺杆与测砧直接接触时读数如图(a)所示,测量金属丝直径时如图(b)所示,则金属丝的直径d=mm。

-22.在跨学科实践活动中,小夏洲查家用料的变迁与合理使用时发,香小时候使用类草作为家用燃料,善,妈小时候用煤炭,年轻的时候用液化气;如今小夏家使用天然使用天然气为家用燃料,主要是天然气的(BA.比热容较大B.热值较大C.密度较大D.内能较大

1.汽艇在河宽400m的河道内执行救援任务。若汽艇艇身始终以4m/s的速度沿垂直于河岸的方向匀速向对岸行驶,则下列说法正确的是A若河水流动,汽艇行驶到对岸的时间大于1100rB.若河水以2m/s流动,汽艇行驶到对岸的时间为100sC.若河水以2m/s流动,汽艇在对岸下游400m处靠岸2200mD.若河水以2m/s流动,不论怎么调整汽艇与河岸的夹角,都不能到达正对岸