1山西省吕梁市2023-2024八年级上学年期中阶段评估卷化学试卷答案

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1山西省吕梁市2023-2024八年级上学年期中阶段评估卷化学试卷答案试卷答案

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Itseemsthat,intheheatofthemoment,peoplepaylittleattentiontothedangerofcollidingwitheachotherandevenaccelerate.Theresponsibilitythereforefallsuponurbandesignerstoworkouthowbesttoplantheconstructionoffuturetunnels,bridgesandotherpassagesthatrestrictflow.Theonlyoptionmaywellbetomakethembroadenough.28.Whichstatementistrueaccordingtothefirsttwoparagraphs?A.Bull-runsinPamplonaareexcitingbutdangerous.B.Peoplearewellawareofthepsychologyofthepanickedcrowds.C.TheresearchpapertobepublishedinSciencewaswrittenbyDrParisiandhisteam.D.Itiseasytoobtainreliableinformationofpanickedpeople'sbehaviorindisastrousevents.29.WhydidDrParisiandhisteamgototwodifferentrooftoplocations?A.Toenjoyathrillingbull-fight.B.Toprovetheirtheory.C.Todesignapsychologicalexperiment.D.Tocollectrelevantdata.30.Whatdoestheunderlinedword"augmented"meaninParagraph4?A.Remained.B.Decreased.C.Doubled.D.Increased.31.Whatcanweinferfromthelastparagraph?A.Peoplelosetheirmindindisasters.B.Futuretunnelsandbridgesmaybewider.C.Panickedcrowdstakenoticeofthedangerofcollision.D.Restrictingflowresultsinpeople'scollidingwitheachother.DAsparagus(isaveryoddvegetable.Itcangrowupto2cminanhour.Cutafieldoneafternoon,returnthenextmorning,andwithalmostfrighteningspeeditwillbeback.Whereasothervegetablesspendtimeproducingleaves,asparagusgrowsassinglespears()makingitsuperblysuitedtoroboticpickers.InlateJuneasmallwhiteobjectslowlymakesitswayalongafieldofasparagusinGloucestershire.Whenitpassesoveragroupofspearsitpauses,whirrsthenclunks:theasparagushasbeensliced.ThisrobotcalledSproutisbeingdevelopedbyaLondonstartupcalledMuddyMachines.ItismoreinflexibleonwheelsthanExMachinaandroid.However,JohnChinn,Britain'slargestasparagusproducer,regardsitwithenthusiasm.Forhim,hesays,itcouldbe"fantastic".Theworldissufferingfromashortageofseasonalworkers.LastsummerMr.Chinnneeded1,300workers.Hegotaround800.Tryingtofindlabouris,forafarmer,"thethingthatstopsyousleeping".TheshortageofworkersisparticularlyacuteinBritain,whereBrexit(hasbeenspoilingharvestsaswellasgrowth.2023拔尖强基联合定时检测英语第6页（共12页）

molL^-1HCl和CH3COOH的混合液,电导率曲线如图所示。下列说法正确的是A.①点溶液中,c(H^+)为0.200molL^-1B.溶液温度高低为①点>③点>②点C.③点后溶液的电导率逐渐降低,是因为溶液中离子数目逐渐减小D.③点溶液中有c(Cl^-)>c(CH3COO^-)

(1)滤渣I的主要成分为炭粉、氧化铜和镁粉,①写出一组碳元素的同素是形体:。②少量的炭粉与氧化铜在高温条件下反应的化学方程式为,该反应中氧化32剂与还原剂的质量之比为。③查阅资料可知,镁粉在空气中燃烧会生成一种化学式为Mg3N2的物质,该物质能与水发生反应,生成氢氧化镁和氨气,Mg3N2与水发生反应的化学方程式为。