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1山西省2023-2024学年度八年级上学期期中综合评估【2LR-SHX】化学试卷答案

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Theresearcherssayit'slikearacebetweenhumansandcockatoostolearnnewwaysofdoingthings.Nowmanycockatooshavelearnedhowtopushheavythingsoffthebins.Asaresult,humanshavefiguredoutwaystoattachtheitemstothetopoftheirbins.Theresearchersdescribethesituationasa"human-wildlifeconflict()"Theyexpecttheseconflictstobecomemorecommonashumanstakeovermoreareasthatusedtobewild.28.Whydocockatooschoosetolivenearpeople?A.Toavoidbeingkilled.B.Tolookforsomefood.C.Theylikeplayingwithtrashbins.D.Theirhomeshavebeendestroyed.29.Howdotheownersoftrashbinsfeelaboutthecockatoos'behaviour?A.Worried.B.Surprised.C.Annoyed.D.Interested.30.Whatdotheresearchersthinkofthesituationbetweencockatoosandpeople?A.It'saboringgame.B.It'saninterestingcontest.C.It'sanecessarycompetition.D.It'saneffectivecommunication.31.Whatcanweinferaboutthecockatoos?A.Theyarestupidindeed.B.Theylikemakingtrouble.C.Theylikecommunicatingwithpeople.D.Theykeeplearningandmakingprogress熨D如Thissummerhasbroughtextremeheatanddroughtstoplacesaroundtheworld.Thedroughtsareleadingtoseriousproblems,includingshortagesoffoodandenergy,problemswithtransportation,and的foodpriceincreases.Theeffectsofthedroughtsarelikelytobefeltforyears.长FromAfricatoEuropetotheUStoChina,recordtemperaturesandlowrainfallhavebeencausingproblems.Droughtsaren'tnew,butEarth'srisingtemperaturesbecauseofglobalwarmingaremaking☒themmuchhardertoavoid.ThedroughtintheHornofAfricamaybethemostserioussituation.Forseveralyears,theareahashadverylittlerainduringtherainyseasons.Nowthearea,whichincludesEthiopia,Kenya,and杯Somalia,issufferingfromitsworstdroughtin40years.总Almosttwo-thirdsofEuropeisthreatened(bywhatmaybetheworstdroughttherein500years.Withtemperaturesreaching40'Candhotter,manycropshavebeendamaged.InFrance,Spain,Portugal,andevenBritain.firefightershavestruggledtocontrolwildfires.IntheUS,manystatesthatusewaterfromtheColoradoRiverarestrugglingwithlowwaterlevels.FarmersinCaliforniaandArizonahavebeenhitparticularlyhard.InCaliforniawateruseisbeinglimitednowandfarmersaren'tabletogrowasmanycrops.Thatcandriveupfoodprices,andthataffectseveryone.Chinaisfacingsimilarproblems.Ithasbeenattackedbyaterribledroughtthissummer,withtemperaturesashighas45C.ThedroughthasdriedupmuchofthewaterintheYangtze,China'slongestriver.Thathascuttheamountofenergyproducedbytheworld'slargestdamby40%.Therearenoeasysolutionsforanyofthesedroughts.Ittookyearstocreatetheclimatecrisis,anditwilltakealongtimetogetitundercontrol.Fornow,governmentsandpeoplewillneedtocarefullymanagewatersuppliesandotherresourcestolimitthedamageasmuchaspossible.32.Whatdoestheunderlinedword"them"inParagraph2referto?A.Problems.B.Droughts.C.Theeffectsofthedroughts.D.Earth'srisingtemperatures.33.WhatmakefarmersinCaliforniagrowfewercrops?A.Wildfires.B.Foodprices.C.Waterlimits.D.Highwaterlevels.鄂州市部分高中数科研协作体高一英语试卷（共8页）第5页

6.铜的氧化物及其盐有重要的用途。制泡铜发生如下反应:2Cu2S+3O22Cu2O+2SO22Cu2O+Cu2S6Cu+SO2,将泡铜熔炼后再电解精炼制精铜。关于铜及铜的制备说法正确的是A.Cu2O溶于硫酸的离子方程式为Cu2O+2H^+Cu^2++Cu+H2OB.制泡铜过程中,制取6molCu共转移12mo!电子C.电解精炼粗铜时,阴极减小的质量等于阳极增加的质量D.精炼后的电解液中存在:Cu^2+、Zn^2+、SO4^2-、Fe^2+、Ag^+

(2)已知浸出液中c(Fe^2+)=5.04mgL^-1,c(Mn^2+)=1.65mgL^-1。若要除尽1m^3浸出液中的Fe^2+和Mn^2+(所有含锰元素的物质均转化为MnO2),,则“氧化”时至少需要加人g高锰酸钾。

1山西省2023-2024学年度八年级上学期期中综合评估【2LR-SHX】化学