2026年units7-8测试题及答案

2026年units7-8测试题及答案

一、单项选择题（总共10题，每题2分）1.Whichofthefollowingwordsmeans"tousethingsagain"?A.reduceB.reuseC.recycleD.renew2.I______myhomeworkbeforemymothercameback.A.havefinishedB.hadfinishedC.finishedD.willfinish3.—Weshouldplantmoretreestoprotecttheenvironment.—______A.That'sallright.B.Goodidea!C.Nevermind.D.Itdoesn'tmatter.4.Weshould______plasticbagstoprotecttheearth.A.cutdownB.cutoffC.cutoutD.cutin5.Thenewbridge______lastyear.A.wasbuiltB.isbuiltC.hasbeenbuiltD.willbebuilt6.______energycomesfromthesun,windorwater.A.TraditionalB.RenewableC.Non-renewableD.Chemical7.Bythetimehewasten,he______fivelanguages.A.learnedB.hadlearnedC.haslearnedD.waslearning8.—Ithinkweshouldstopusingpapercups.—______Theyarebadfortheenvironment.A.Idisagree.B.I'mnotsure.C.Iagree.D.It'shardtosay.9.Wecan______wasteintodifferentgroupstorecycle.A.divideB.separateC.splitD.break10.Shesaidshe______themoviebefore.A.sawB.hasseenC.hadseenD.wouldsee二、填空题（总共10题，每题2分）1.Weshould______(recycle)wastepapertosavetrees.2.The______(invent)ofthecomputerhaschangedourlifealot.3.Bytheendoflastmonth,we______(plant)over1000trees.4.Solarenergyisakindof______(renew)energy.5.Weshouldtryto______(reduce)airpollutionbytakingbuses.6.Theoldbuilding______(pull)downlastweek.7.Manycountriesaredeveloping______(environment)friendlyproducts.8.Hetoldmethathe______(visit)theGreatWallbefore.9.Wecanuse______(cloth)bagsinsteadofplasticbags.10.Thebook______(write)byLuXunisverypopular.三、判断题（总共10题，每题2分）1."Reuse"meanstousesomethingagain.()2.Thesentence"Ihavefinishedmyhomeworkyesterday."iscorrect.()3.Weshouldcutdownmoretreestomakemoremoney.()4."Renewableenergy"canbeusedagainandagain.()5.Thepassivevoiceof"Peopleplanttreeseveryyear."is"Treesareplantedbypeopleeveryyear."()6."BythetimeIgottoschool,theclasshadbegun."usespastperfecttense.()7.Wecanuseplasticbagsasmuchaspossible.()8."Innovate"isanoun.()9.Thesentence"Hesaidhehasseenthefilm."iscorrect.()10.Solarenergyisakindofnon-renewableenergy.()四、简答题（总共4题，每题5分）1.Translatethesentence"Weshouldtakeactiontoprotecttheenvironmentimmediately."intoChinese.2.Use"bythetime"tomakeasentencewithpastperfecttense.3.Listthreewaystosaveenergyinourdailylife.4.Explainthedifferencebetween"reuse"and"recycle".五、讨论题（总共4题，每题5分）1.Whatdoyouthinkwecandotoreduceplasticpollution?2.Discusstheadvantagesanddisadvantagesofusingrenewableenergy.3.Howhastechnologychangedourlife?Givesomeexamples.4.Doyouthinkit'snecessaryforstudentstolearnaboutenvironmentalprotection?Whyorwhynot?答案及解析一、单项选择题答案1.B解析：reuse意为“重复使用”，reduce（减少）、recycle（回收）、renew（更新）不符合“再次使用”的含义。2.B解析：before引导的时间状语从句为过去时，主句需用过去完成时（had+过去分词），表示“过去的过去”的动作。3.B解析：对环保建议的回应，“Goodidea!”（好主意）符合语境，其他选项用于回应道歉或安慰。4.C解析：cutout意为“停止使用（有害物）”，cutdown（砍倒）、cutoff（切断）、cutin（插嘴）不符合“减少塑料袋使用”的语境。5.A解析：lastyear为过去时间，句子用一般过去时的被动语态（was/were+过去分词）。6.B解析：renewableenergy（可再生能源），太阳能、风能等属于可再生能源，traditional（传统的）、non-renewable（不可再生的）、chemical（化学的）不符合。7.B解析：bythetime引导的从句为过去时，主句用过去完成时（had+过去分词）。8.C解析：对方指出纸杯有害环境，回应“Iagree.”（我同意）符合逻辑，其他选项与语境矛盾。9.A解析：o...（把……分成……）是固定搭配，separate...from...（把……和……分开）、split（分裂）、break（打破）不符合“分类回收”的语境。10.C解析：宾语从句中，主句为过去时，从句动作发生在主句之前，需用过去完成时（had+过去分词）。二、填空题答案1.recycle解析：情态动词should后接动词原形，recycle（回收）符合“节约树木”的语境。2.invention解析：invent的名词形式为invention（发明），表示“电脑的发明”。3.hadplanted解析：bytheendoflastmonth为过去完成时的标志（had+过去分词）。4.renewable解析：renewableenergy（可再生能源）是固定表达，需用形容词形式。5.reduce解析：tryto后接动词原形，reduce（减少）符合“减少空气污染”的语境。6.waspulled解析：lastweek为过去时间，句子用一般过去时的被动语态（was/were+过去分词）。7.environmentally解析：environmentallyfriendly（环保的）是固定短语，需用副词修饰形容词friendly。8.hadvisited解析：宾语从句中，主句为过去时，从句动作发生在主句之前，用过去完成时（had+过去分词）。9.cloth解析：clothbags（布袋），cloth作定语修饰bags，reusable（可重复使用的）也符合，但单元词汇更倾向cloth。10.written解析：过去分词written作后置定语，表被动（“被鲁迅写的书”）。三、判断题答案1.T解析：reuse的定义即为“再次使用某物”。2.F解析：现在完成时不能与yesterday等过去时间状语连用，需改为一般过去时或过去完成时。3.F解析：砍树会破坏环境，不符合环保理念。4.T解析：可再生能源的特点是可重复利用（如太阳能、风能）。5.T解析：主动语态变被动语态时，宾语变主语，谓语用“be+过去分词”，by引出执行者。6.T解析：bythetime引导的从句为过去时，主句用过去完成时（hadbegun）。7.F解析：塑料袋污染环境，应减少使用。8.F解析：innovate是动词（创新），名词形式为innovation。9.F解析：宾语从句中，主句为过去时，从句需用过去完成时（hadseen）。10.F解析：太阳能属于可再生能源，non-renewable（不可再生的）不符合。四、简答题答案1.我们应该立即采取行动保护环境。解析：takeactiontodosth.（采取行动做某事），immediately（立即），整句直译为“我们应该立即采取行动保护环境。”2.示例：BythetimeIgothomeyesterday,mymotherhadcookeddinner.解析：bythetime引导的从句用一般过去时（gothome），主句用过去完成时（hadcooked），表示“过去的过去”的动作。3.示例：①Turnofflightswhenleavingaroomtosaveelectricity.②Unplugchargerswhennotinuse(theystillconsumeenergyifpluggedin).③Useenergy-savinglamps(theyuselesselectricitythantraditionalbulbs).④Takepublictransportorridebikesinsteadofdriving(tosavefuelandreduceemissions).解析：从节约用电、减少待机能耗、使用节能产品、绿色出行等方面列举，合理即可。4.Reusemeansusingsomethingagainwithoutchangingitsform(e.g.,reusingawaterbottletoholdwater).Recyclemeansprocessingwastetomakenewproducts(e.g.,recyclingpaperintonewpaper).解析：reuse是“重复使用原物品”，recycle是“将废物加工为新产品”，需结合例子说明。五、讨论题答案1.示例：Toreduceplasticpollution,wecan:①Usereusableshoppingbags(e.g.,clothorcanvasbags)insteadofplasticbags.②Avoidproductswithexcessiveplasticpackaging(e.g.,chooseloosefruitsinsteadofplastic-wrappedones).③Recycleplasticwaste(e.g.,putplasticbottlesinrecyclingbins).④Encouragerestaurantstousebiodegradabletableware(e.g.,paperorbambooplates)insteadofplasticones.⑤Educateothersaboutplasticpollution(e.g.,sharetipsonsocialmedia).解析：从减少使用、回收、替代、宣传等方面阐述，结合具体例子。2.示例：Renewableenergyhasadvantages:①Sustainability(e.g.,solar/windenergyneverrunsout).②Cleanliness(produceslittlepollution,reducingclimatechange).③Jobcreation(inrenewableenergyindustrieslikewindfarmconstruction).Disadvantages:①Highinitialcosts(buildingsolarplantsorwindfarmsisexpensive).②Instability(e.g.,windpowerdependsonwind,sosupplymaybeinconsistent).③Landuse(large-scalerenewableprojectsneedmuchland,affectingecosystems).解析：从优势（可持续、环保、就业）和劣势（成本、稳定性、土地利用）两方面分析，结合能源类型举例。3.示例：Technologyhastransformedourlives:①Communication:Smartphones(e.g.,WeChat)letusvideo-callfriendsworldwideinstantly.②Shopping:E-commerce(e.g.,Taobao)enableshomedeliveryofalmostanyproduct.③Transportation:High-speedtrains(e.g.,China'sFuxing)cuttraveltime(e.g.,BeijingtoShanghaiin5hours).④Healthcare:AI-poweredtools(e.g.,formedicalimageanalysis)diagnosediseasesfaster