【知识图鉴】人教版八年级下册 Unit 3-03 单元测（解析版）

第页I.单项选择1.Travelingaroundcannotonlyopenupourmind,butalso________uswithachancetodevelopbasiclifeskills.A.bring B.provide C.fill D.afford【答案】B【解析】【详解】句意：到处旅行不仅能开阔我们的思维，也能为我们提供发展基本生活技能的机会。考查动词。bring带来；provide提供；fill装满；afford买得起。根据“uswithachance”可知，句子表达“为某人提供某物”，用短语“providesb.withsth.”。故选B。2.(2017·湖北鄂州·27)—Jackhasn'ttakenhispianolessonsforalongtime.—Heisconsidering________hispianocourseandspendingmoretimeonhisstudy.A.todrop B.tothrow C.dropping D.throwing【答案】C【解析】【详解】句意：——杰克好长时间没上钢琴课了。——他在考虑放弃钢琴课程花更多的时间去学习。considerdoingsth考虑做某事；drop放下；throw扔；故选C3.—Couldyoupleasecometothelibrarywithmetomorrow?—Sorry,I________.I’llhaveapianolesson.A.mustn’t B.needn’t C.couldn’t D.can’t【答案】D【解析】【详解】句意：——你明天能和我一起去图书馆吗？——对不起，我不能。我要上钢琴课。考查情态动词。mustn’t禁止；needn’t不需要；couldn’t不能；can’t不能。根据“Couldyoupleasecometothelibrarywithmetomorrow?”可知，could表示委婉语气，回答时用can或者can’t，此处用“can’t”回答，表示“不能”。故选D。4.Pleasetellthem________themselves.A.lookafter B.totakecareofC.totakecare D.lookover【答案】B【解析】【详解】句意：请告诉他们照顾好自己。考查非谓语及动词短语。lookafter=takecareof照顾；takecare注意；lookover检查；tellsbtodosth“告诉某人做某事”，是固定短语，空处用不定式形式，排除A/D选项；根据语境可知，此处指的是“照顾好自己”，故选B。5.Thegirlis_________.Who’dliketolookafterthe_________girl?A.sick;ill B.ill;ill C.ill;sick D.well;sick【答案】C【解析】【详解】句意：这个女孩病了。谁愿意照顾这个生病的女孩？考查形容词辨析。ill“生病的”，形容词，通常用作表语；sick“生病的”，形容词，常用作定语修饰名词。根据“Thegirlis....Who’dliketolookafterthe...girl?”可知，第一空要用形容词作表语，应用ill；第二空应用sick作定语，修饰名词“girl”。故选C。6.Milliekeepsonexercisingeverymorning________keephealthy.A.inorderto B.sothat C.suchthat D.inordernotto【答案】A【解析】【详解】句意：Millie为了保持健康，每天早晨坚持锻炼。考查动词不定式作目的状语。inorderto为了，后接动词原形；sothat以便于，引导目的状语从句；suchthat无此搭配；inordernotto为了不，后接动词原形。此空后接的是动词原形keep，故排除B和C选项。根据“Milliekeepsonexercisingeverymorning…keephealthy”可知，为了保持健康才每天坚持锻炼，故选A。7.Itisalmost3years________workersstartedbuildingtheundergroundLineS1inSuzhou.A.when B.since C.before D.after【答案】B【解析】【详解】句意：苏州地铁S1号线开工建设已近3年。考查连词辨析。when当……时；since自从；before在……之前；after在……之后。根据“Itisalmost3years…workersstartedbuildingtheundergroundLineS1inSuzhou.”可知，此处为since引导的时间状语从句，结构为Itis+时间段+since+从句。故选B。8.—Wouldyoumind________theTV?It’stoonoisy.—Sorry.Iwilldoitatonce.A.turnoff B.turningoff C.toturnoff D.turnedoff【答案】B【解析】【分析】【详解】句意：——你介意关掉电视吗？太吵了。——对不起。我马上就关电视。考查动名词作宾语。根据“mind”可知，此处是“minddoingsth.”，表示“介意做某事”，所以此处使用“turningoff”。故选B。9.Idon’tlikefootball.Tomdoesn’tlikeit,________.A.too B.either C.also D.neither【答案】B【解析】【详解】句意：我不喜欢足球。汤姆也不喜欢它。

考查副词用法。too也，一般用于肯定句和疑问句句末；either也，一般用于否定句句末；also也，一般用于肯定句句首或句中；neither也不。根据“Tomdoesn’tlikeit”可知本句是否定句，表示“也”用either，故选B。10.—ExcusemecanI________yournewbike?—Sorry,I________ittoBobyesterdayafternoon.A.borrow;lent B.borrow;borrowed C.lend;borrowed D.lend;lent【答案】A【解析】【详解】句意：——打扰了，我能借你的新自行车吗？——对不起，我昨天下午借给鲍勃了。考查动词辨析。borrow借入，常和介词from连用；lend借出，常用结构有lendsb.sth.或者lendsth.tosb.。根据题干可知，第一空是从别人那借入，应用borrow；根据“I...ittoBob”可知，是lendsth.tosb.，第二空应用lent。故选A。Ⅱ.完形填空Peoplethinkthatlessthan2-year-oldchildrencanhelpwithchores.___11___parentssaytothosechildren,"Justlookatthepaperonthefloor,"theywillpickitup.

Someparentsthinkchildhoodisjustforplaying,sotheydon'tasktheirchildrentodochores.Otherparentssay,"Iknowit'snot___12___,butit'squickertodothembymyself!"However,mostparentsbelievethatdoingchoresisawayofteachingchildrenresponsibility.

Doingchoreshelps___13___children'sindependence(独立).Childrenlearntohelp,shareandcareabout___14___bydoingchores.Andtheycan___15___theimportanceofworkinghard.Thingslike___16___apetorababyandhelpingmakemealsaresomeexamplesofhelpingothers.

Herearesomereasonsfordoingchores:Tolearnresponsibility:Mostpeoplebelievethatdoingchoresisgood___17___children.

Tosharetheworkload(工作负担):Childrenwhocanhelptocleanwon'tmakeabig___18___.

Tolearnskills:Childrenwilllearn___19___tocook,cleananddootherthingsinthehouse.

Doingchoresisgood.Anyway,itisalsoakindof___20___.Sostarttohelpyourparentswiththechores.Youwilllearnalotbydoingthem.11.A.Because B.When C.Though12.A.right B.clear C.easy13.A.change B.explain C.develop14.A.both B.another C.others15.A.decide B.mean C.notice16.A.gettingoutof B.givingaway C.takingcareof17.A.for B.to C.at18.A.difference B.mess C.decision19.A.what B.when C.how20.A.training B.playing C.feeling【答案】11.B12.A13.C14.C15.C16.C17.A18.B19.C20.A【解析】【分析】本文讨论的是要不要孩子帮忙做家务，分析了孩子做家务的好处和让孩子做家务的一些理由，最后指出做家务是好事。【11题详解】句意:当父母对孩子们说:“看地板上的纸。”他们就会把它捡起来。Because因为；When当……时候；Though尽管。观察句子前后逻辑，应该是when引导的时间状语从句，故选B。【12题详解】句意:我知道这是不对的。right正确的；clear清晰的；easy容易的。not表否定，根据上文“sotheydon'tasktheirchildrentodochores”可知notright“不正确”符合句意。故选A。【13题详解】句意:做家务有助于培养孩子们的独立性。change改变；explain解释；develop开发，发展。根据“children'sindependence”可知应该是培养孩子的独立性，故选C。【14题详解】句意：孩子们通过做家务来学习帮助、分享和关心他人。both表示两者都；another用于泛指三者及以上的不定数目中的“另一个”；others表示泛指,意为“其他的人或物”。careaboutsb./sth“关心某人或某事”，知选C。【15题详解】句意：他们能注意到努力工作的重要性。decide决定；mean意思；notice注意。根据宾语“theimportanceofworkinghard”可知选C。【16题详解】句意:像照顾宠物或婴儿以及帮忙做饭的事情都是帮助他人的例子。getoutof摆脱；giveaway赠送；takecareof照顾。根据“apetorababy”，可知应该是照顾宠物或婴儿，故选C。【17题详解】句意：大多数人认为做家务对孩子们有好处。begoodfor有益于；begoodto对……好心；begoodat擅长根据“Tolearnresponsibility”可知做家务对孩子们有好处。故选A。【18题详解】句意：能帮忙打扫的孩子们不会弄得一团糟。difference差异；mess混乱；decision决定。根据：makeadecision“做决定”，故选B。【19题详解】句意：孩子们将学习如何做饭、打扫和做房子里其他的事情。what什么；when何时；how怎样。learnhowtodosth“学会怎样做某事”，符合语境，故选C。【20题详解】句意：无论如何，这也是一种训练。training训练；playing比赛，演奏；feeling感觉。根据文章内容可知。做家务对孩子有很多好处，可知应该是一种训练，故选A。III.阅读理解阅读下面短文，选出一个能回答所提问题或完成所给句子的最佳选项。A篇主题语境：教育难度：★★文体：议论文Accordingtoareport,about60%ofAmericanfamilieshaveworkingparents.Mothersspendabout18hoursdoingthehouseworkeveryweek,andfathersspendabout10hoursdoingthehousework.Whataboutthekids?Childrenagedbetweensixandtwelvespendlessthanthreehoursdoingthehouseworkeveryweek,butalmost14hourswatchingTV.Howaboutteenagers?Theyspendnearly31hoursontheInternet,butonlythreehourshelpingwiththehouseworkeveryweek.However,someparentsthinkchildrenshouldspendmoretimeonchores.Knowinghowtodothehouseworkisanimportantlifeskill.Doingchoressendschildrenthemessagesthattheyarepartofthefamilyandthattheyshoulddothingsforothers.Everymorningchildrencareforthefamilypetsbyfeedingthemorwalkingthem.Itcanalsohelpthechildrenkeephealthy.Childrenshouldtakepartinalmostallthechores.Theywillfeelhappierwhentheymakeacontribution(贡献)tothefamily.Anditmayhelpthemunderstandtheideaofworkinghardbetter.Atthesametime,theycanlearnalotfromdoingthehousework.Itcanhelpthemliveabetterlifeinthefuture.21.Americanmothersspendabout________hoursdoingthehouseworkeachweek.A.18 B.16 C.14 D.1022.________spendnearly31hoursontheInterneteveryweek.A.Oldpeople B.Parents C.Teenagers D.Onlychildren23.Theunderlinedword“skill”means“________”inChinese.A过程 B.趣味 C.练习 D.技能24.WhichofthefollowingisNOTtrue?A.Doingchorescanhelpchildrenkeephealthy.B.Youngchildrendonotneedtodoanychores.C.Childrencanlearnalotfromdoingchores.D.Mothersshoulddomorechoresathome.25.Thebesttitleforthepassagemaybe“________”.A.DoingChoresisGoodforChildrenB.ParentsshouldDoHouseworkC.HowMuchHouseworkThereisD.DoingChoresisDifferent【答案】21.A22.C23.D24.B25.A【解析】【分析】本文是一篇议论文。文章介绍了在美国，大多数父母认为应该培养孩子的自立能力。他们认为孩子作为家庭成员，就应当分担家务，并且做家务对孩子的成长有很多好处。21题详解】细节理解题。由第一段第二句“Mothersspendabout18hoursdoingthehouseworkeveryweek…”可知，在美国，妈妈们每周大约花18个小时做家务。故选A。【22题详解】细节理解题。由第一段的“Howaboutteenagers?Theyspendnearly31hoursontheInternet…”可知，每周，青少年花将近31个小时在因特网上。故选C。【23题详解】词义猜测题。根据第一段“However,someparentsthinkchildrenshouldspendmoretimeonchores.Knowinghowtodothehousework...”可知，家长认为孩子们应该花时间做家务，根据第二段“Doingchoressendschildrenthemessagesthattheyarepartofthefamilyandthattheyshoulddothingsforothers.”可知做家务能告诉孩子他们是这个家的成员并且他们应该为他人做些事情，由此可推测孩子学会做家务是一种生活“技能”。故选D。【24题详解】细节理解题。根据文章最后一段“Childrenshouldtakepartinalmostallthechores.”可知文章主旨是提倡、鼓励孩子做家务，B项与文章主旨大意不符。故选B。【25题详解】主旨大意题。根据文章第一段“Knowinghowtodothehouseworkisanimportantlifeskill.”及第二段文章“Doingchoressendschildrenthemessages...”和第三段“Childrenshouldtakepartinalmostallthechores.”可知文章围绕孩子做家务展开，主要讲述了做家务及做家务对孩子们的益处。A项最能概括文章大意。故选A。B篇主题语境：家庭生活难度：★★★文体：记叙文ItwashalfpastfiveintheeveningwhenNancycamehomefromwork.Shewalkedintothelivingroomandlookedatherthreechildren.Thechildrenwerefourteenelevenandeightyearsold.TheywerewatchingTVhappily.Theroomwasdirtyanduntidy.Therewereemptyglassesanddirtyclothesonthefloor.Toyswerehereandthere.Nancygotangry.“Whatamess”shesaidtoherchildren.“Iworkalldayandhavetodohouseworkallevening.I’mverytired.Ineedtohaveagoodrest.Iwon’tdothehouseworkanymore!”Nancydidasshesaid.Shedidn’tdoanyhousework.EveryeveningshesatonthesofaandwatchedTV.Aweeklater,everydishinthekitchenwasdirty.Allthechildren’sclothesweredirty,too.Everyrubbishbagwasfull.ThenonedayNancygotverysurprisedwhenshecamehomefromwork.Thekitchenwasclean.Thechildrenhadcleanedit!Thenextday,whenNancygothome,shefoundthelivingroomwasclean,andthechildrenwerewashingtheirclothes.Nancywashappyandwenttohelpthem.NowNancyandherthreechildrendothehouseworktogether.ThentheyallsitonthesofaandwatchTV.26.Nancyusually________intheeveningbeforethenightshegotangry.A.cleanedthehouse B.watchedTVallthetimeC.satonthesofaandtalkedwithherchildren D.didthehouseworkwithherchildren27.Nancy’syoungestchildwas________yearsold.A.six B.eight C.eleven D.fourteen28.EverydaywhenNancygothome,________.A.thedisheswereclean B.theroomwasdirtyanduntidyC.thechildrenwereplayingwiththeirtoys D.thechildrenweredoingtheirhomework29.Nancywassurprisedwhenshegothomeoneday,because________.A.therubbishbagswerefull B.thechildrenwerenotathomeC.thechildrenwerecookingdinner D.thechildrenhadcleanedthekitchen30.WhichofthefollowingisNOTtrueaccordingtothepassage?A.Nancycamehomefromworkat5：30. B.Nancydidn’tdothehouseworkforaweek.C.Thechildrenweretooyoungtowashtheirclothes. D.NowNancyandherchildrendochorestogetherbeforewatchingTV.【答案】26.A27.B28.B29.D30.C【解析】【导语】本文主要讲一位妈妈通过自己不做家务让孩子们明白做家务的重要性并自己动手做家务的故事。【26题详解】细节理解题。根据“Iworkalldayandhavetodohouseworkallevening”可知生气之前都是在做家务。故选A。【27题详解】细节理解题。根据“Thechildrenwerefourteen,elevenandeightyearsold.TheywerewatchingTVhappily.”可知南希最小的孩子8岁。故选B。【28题详解】细节理解题。根据“Theroomwasdirtyanduntidy.Therewereemptyglassesanddirtyclothesonthefloor.Toyswerehereandthere.”及“Iworkalldayandhavetodohouseworkallevening.”可知南希每次回来房间都很乱。故选B。【29题详解】细节理解题。根据“ThenonedayNancygotverysurprisedwhenshecamehomefromwork.Thekitchenwasclean.Thechildrenhadcleanedit!”可知南希很吃惊是因为厨房被打扫了。故选D。【30题详解】细节理解题。根据“andthechildrenwerewashingtheirclothes.”可知孩子们会洗衣服，故C项错误。故选C。Ⅳ.语法填空阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。Somechildrendreamofbecomingadults(成年人).Sotheywon’thavetodohomeworkortakeexams.Thatistosay,theywon’thavestress___31___schoolanymore.Butarethingsreallylikewhattheythink?WangJun’smotherisa___32___(clean).Herjobistocleanthepark.Let’ssee___33___shedoeseveryday.Inorderto___34___(provide)acleanenvironmentforeveryone,shehastogetupat5a.m.___35___(sweep)thestreetsandcollectrubbishinthepark.Theminuteshe___36___(finish)herwork,shegoeshometomakebreakfast.Thenshedoessome___37___(chore)athome.Afterthat,shegoestotheparktoworkagain,becausesomeoneisalwaysthrowingrubbisheverywhere.Shedoesn’tcomebackhome___38___3:00p.m.It’snoteasy___39___WangJun’smothertomakemoney.Hismotherneverwastesmoney.Beinganadultisnotas____40____(easy)asyouthink.Soenjoyyourschoollife.【答案】31.from32.cleaner33.what34.provide35.tosweep36.finishes37.chores38.until39.for40.easy【解析】【分析】本文主要通过讲述王军妈妈作为一名清洁工的工作日常，说明成年人的世界并不像想象的那么轻松，劝告孩子们享受校园生活。【31题详解】句意：那就是说，他们不再有来自学校的压力。由语境可知，此处表示“来自学校的压力”，用stressfromschool，介词短语fromschool作定语，修饰名词stress，故填from。【32题详解】句意：王军的妈妈是一名清洁工。冠词a后接单数名词，根据后文“Herjobistocleanthepark.”可知，她是一名清洁工，clean应加er，故填cleaner。【33题详解】句意：让我们看看她每天做什么。本句话属于宾语从句，空处缺少从句引导词，表示做的什么事情用what，故填what。【34题详解】句意：为了给大家提供一个干净的环境，她必须早晨五点起床去打扫街道，并收拾公园里的垃圾。固定短语inordertodo表示“为了做……”，因此provide“提供”用原形，故填provide。【35题详解】句意：为了给大家提供一个干净的环境，她必须早晨五点起床去打扫街道，并收拾公园里的垃圾。由语境可知，早起的目的是为了打扫街道，用动词不定式todo作目的状语，故填tosweep。【36题详解】句意：她一完成工作就回家做早饭。本段讲述王军妈妈的日常工作和生活，时态均用一般现在时，句子主语是第三人称单数，谓语动词finish加es，故填finishes。【37题详解】句意：然后她在家做家务。chore“家务活”为可数名词，放some后需加s变为复数形式，dosomechores表示“做家务”，故填chores。【38题详解】句意：直到下午三点，她才回家。not...until...表示“直到……才……”，符合语境，故填until。【39题详解】句意：对王军的妈妈来说，赚钱并不容易。句型Itis+形容词+forsb.+todosth.表示“对某人来说做某事怎么样”，空处缺少介词for，故填for。【40题详解】句意：成为成年人不像你们想得那么容易。as...as表示“和……一样”，中间用形容词或副词原级，此处作表语用形容词easy“容易的”，故填easy。V.补全对话根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。A:Hey,Mom.CouldIinvitemyfriendstothepartytomorrowevening?B:_______________41_______________Butyouhavetodosomechoresfirst.A:WhatdoIhavetodo?B:Well,firstsweepthekitchenfloor.A:OK._______________42_______________B:Thentakeoutthetrash.A:Yeah._______________43_______________B:AndyouneedtocleanyourroomA:Wow!I’mgoingtobetootiredtogotomyownparty!B:_______________44_______________I’llgotothestorefordrinksandsnacks.A:_______________45_______________【答案】41.Sure,youcan.42.Thenwhat?43.Icandothat.44.I'llhelpyou.45.Thanks,Mom.（只要符合日常交际用语即可）【解析】【分析】A想邀请一些朋友来参加星期日下午的聚会，向妈妈提出请求，妈妈表示同意，但是必须首先把卫生打扫一下，妈妈答应帮助去商店买饮料和小吃。【41题详解】问句“CouldIinvitemyfriendstothepartytomorrowevening?”是询问“我可以邀请我的朋友参加明天晚上的聚会吗？”根据后文Butyouhavetodosomecleaningfirst但是你得先打扫卫生，意思是妈妈同意了，故答案为Sure,youcan.【42题详解】根据后文Thentakeoutthetrash然后你可以把垃圾拿出去，推测上文问的是然后我该做什么呢？故答案为Thenwhat?【43题详解】根据上文Thentakeoutthetrash，下文Yeah，即同意做这件事，表示能做到，答案为Icandothat.【44题详解】根据上文I’mgoingtobetootiredtogotomyownparty!说我太累了，那时不能去参加我自己的聚会！后面妈妈说我将去商店买饮料和小吃，妈妈帮助了他，因此妈妈说“我会帮你的”。答案为I'llhelpyou.【45题详解】根据上文I'llgotothestorefordrinksandsnacks我将去商店买饮料和小吃，故向妈妈表示感谢，答案为Thanks,Mom.Ⅵ.词汇用所给单词的适当形式填空。46.It’simportantforus________(develop)goodhabitsinourdailylives.【答案】todevelop【解析】【详解】句意：在日常生活中养成良好的习惯对我们来说是很重要的。本句是固定句型：Itbe+形容词+forsb.todosth.“做某事对某人来说是……样的”，因此这里填不定式。故填todevelop。47.Parentsalwaystry________(provide)acomfortablelifefortheirchildren.【答案】toprovide【解析】【详解】句意：父母总是设法为孩子们提供舒适的生活。根据“Parentsalwaystry...acomfortablelifefortheirchildren.”可知，父母会尽力给孩子提供舒适的生活，此处应用短语trytodosth.“尽力做某事”，此空应填动词不定式toprovide作宾语。故填toprovide。48.Davidalwaysthinksit’s__________(fair)forhimtodosomuchhousework.【答案】unfair【解析】【详解】句意：戴维总是认为做这么多家务对他不公平。根据“dosomuchhousework”可知，做这么多家务对他不公平，unfair“不公平的”符合句意，故填unfair。49.Everyone________(lend)

ahand,andtheworkwasfinishedontime.【答案】lent【解析】【详解】句意：每个人都帮了忙，工作按时完成了。根据“andtheworkwasfinishedontime.”判断，空处应该用一般过去时。故填lent。50.CouldIatleastfinish_________（watch）thisshow?I’lldomyhomeworkthen.【答案】watching【解析】【详解】句意：至少让我看完这个节目吧？我会做我的家庭作业。finishdoingsth.：完成做某事，动名词作宾语，故填watching。Ⅶ.书面表达51.假设你是丽莎(Lisa)，某英文报刊正在就ShouldTeenagersHelpTheirParentswithHousework?开展征文活动。请你根据自己的体会，写一篇短文向该报社投稿。写作要点：1.What’syouropinion(观点)aboutit?2.Whyshouldteenagershelptheirparentswithhousework?3.Whataretheadvantages(好处)ofdoinghousework?写作要求：1.语句通顺，符合逻辑，可适当发挥。2.不少于70词。开头和结尾已给出，不计入总词数。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________【答案】例文：DearSirorMadam,Ithinkthatteenagerslikemeshouldhelpourparentswithhousework.First,doinghouseworkmakesusindependent.Wecan’tdependonourparentsallthetime.Soweshouldlearnhowtotakecareofourselvesnow.Second,doinghouseworkisakindofphysicalexercise.Ithelpsusstayhealthyandstrong.Third,sinceweliveinahousewithourparents,it’sfairforustoworktogetherandmakethehousecleanandcomfortable.Allinall,doinghouseworkhelpsustolearnlifeskillsandunderstandtheideaoffairness.SoIthinkteenagersshouldlearntoenjoydoingitwithourparents.Yourstruly,Lisa【解析】【分析】【详解】1.题干解读：本文以“青少年应该帮助父母做家务吗？”为主题介绍青少年是否应该帮助父母做家务；文章要求从三方面阐述：一是阐述自己的观点；二是介绍青少年为什么应该帮助父母做家务；三是介绍青少年做家务的好处。2.写作指导：本文以第一人称、一般现在时为主，注意主谓一致问题；写作时注意按要点分段叙述，第一段开门见山，表明自己的观点；中间段落介绍青少年做家务的原因，可使用First、Second等分层描写；最后一段介绍做家务的好处。（山东青岛中考）52.—Couldyoupleasepassmethebook?—________.A.Yes,Icould B.No,Icouldn'tC.Sure.Hereyouare D.No,that'snoproblem【答案】C【解析】【详解】考查交际用语。根据Couldyoupleasepassmethebook?“请你把书递给我，好吗？”可知这是一个表示请求的一般疑问句，故答案选C，意为“当然可以。给你。”（湖北中考）53.Ithasbeenmucheasierformetogotowork________sharedbikesappeared.Buttheyalsocausedplentyofproblems.A.since B.before C.unless D.though【答案】A【解析】【详解】句意：——自从共用自行车出现以来，我就更容易去上班了。——但它们也造成了很多问题。考查连词辨析题。A.since自从……，后接时间名词或从句，表一段时间，用于现在完成时；B.before在……以前，表时间；C.unless除非，表条件；D.