八年级下册生物第三章同步训练题.docx

八年级下册生物第三章同步训练题

第一篇：八年级下册生物第三章同步训练题1.科学家推测，原始生命的形成的时间，大约的在地球形成后的多少年()A.10亿年B.15亿年C.20亿年D.30亿年2.原始大气层里不含()A.氧气B.氢气C.甲烷D.硫化氢3.原始的生命起源于()A.原始的大气层B.原始的河流C.原始的海洋D.原始的高山4.人类起源于()[来源:]A.森林古猿B玛雅人C.尼安德特人D.黑猩猩5.在实验室模拟原始地球的条件和大气成分来合成氨基酸的第一位人物是()A.斯巴兰让尼B.巴斯德C.米勒D.孟德尔6.关于科学推测，正确的叙述是()A.科学推测需要确凿的证据B.科学推测需要严密的逻辑C.科学推测需要丰富的联想和想象D.以上三项都需要第二篇：八年级英语下册同步训练9八年级英语同步测试（九）I.单项选择（15分）()1.–Haveyoueverbeentoanaquarium?–No,_____.A.IhaveB.IamnotC.Ihaven’tD.Ihasn’t()2.–I’veneverbeentoawaterpark.--______A.Me,too.B.Me,neither.C.Mealso.D.Meboth.()3.Haveyoueverargued_____yourparents?A.toB.withC.andD.on()4.I’venever_____thenews.A.hearB.heardC.heardfromD.heardof()5.Tobeapolicemanis_______Ieverwantedtobe.A.thatB.allC.what’sD.only()6.–______haveyoubeenstudyingEnglish?–Since2002.A.HowoftenB.HowlongC.HowmanytimesD.Howold()7.Howlonghashe_____thejob.A.foundB.changedC.hadD.got()8.I’manewcomerhere,soIhadalotofproblems_______thebusstop.A.lookingforB.tolookforC.findD.finding()9.Chinahasthe_______populationintheworld.A.largestB.mostC.moreD.highest()10.Youcan’tfind_______insuchasmallplace.A.somethingtoeatB.nothingtoeatC.anythingtoeatD.anythingeating()11.Canyoutellmethereason_______learningEnglish?A.ofB.toC.forD.on()12.Itwas_____IcouldspeakFrenchthatIgotthejob.A.whyB.soC.becauseD.when()13.TheLanguageSchoolhasreally_____me_____English.A.helped;learnedB.help;learnedC.help;learnD.helped;learn()14.ThebestwaytolearnEnglishwellis______it.A.touseB.tousingC.usesD.use()15.ThetemperatureisalmostthesameallyearinSingaporebecauseit’ssocloseto____.A.theearthB.ChinaC.theequatorD.theseaV.完形填空（10分）race--42.2kilometers,andgoodaboutanimportantbattle(战斗theirleader(领袖)wasveryexcited.Heshouted,"WemessagetoAthens(雅典)at”Pheidippideslltheothermen!”Pheidippidesranasfastashe()1.A.dangerousB.interestingC.shortD.long()2.A.playersB.runnersC.doctorsD.workers()3.A.subjectB.resultC.storyD.book()4.A.agoB.beforeC.afterD.later()5.A.answerB.giveC.bringD.send()6.A.WhatB.WhoC.WhereD.When()7.A.slowerB.higherC.furtherD.faster()8.A.goodB.sadC.luckyD.safe