2026年北师大版初中三年级英语下册第7单元课时作业及答案

2026年北师大版初中三年级英语下册第7单元课时作业及答案第1页共1页2026年北师大版初中三年级英语下册第7单元课时作业及答案一、单项选择题（共10小题，每题2分）（每小题只有一个选项符合题意，请把正确选项的字母填在题后括号内）1.Ifyouwanttostayhealthy,youshouldeatabalanceddiet.WhichofthefollowingfoodsisNOTgoodforyourhealth?A.ApplesB.FrenchfriesC.CarrotsD.Grapes参考答案：B2.Thedoctortoldmetodrinkmorewatereveryday.Whichsentenceisthesamemeaningasthedoctor'sadvice?A.Youshouldeatmorefruitsandvegetables.B.Youneedtodrinkatleasteightglassesofwater.C.Youmustexerciseeveryday.D.Youshouldsleepforeighthourseverynight.参考答案：B3.Mybrotherislearningtoplaytheguitar.Heoftenpracticesfortwohourseveryevening.Whatishedoing?A.HeiswatchingTV.B.Heisreadingabook.C.Heisplayingthepiano.D.Heisplayingtheguitar.参考答案：D4.Theweatherforecastsaysitwillraintomorrow.Whatshouldyoudo?A.Takeanumbrellawithyou.B.Wearahat.C.Putonsunglasses.D.Gotothebeach.参考答案：A5.Iamgoingtovisitmygrandparentsnextweekend.WhatamIgoingtodo?A.Iamgoingtothelibrary.B.Iamgoingtothesupermarket.C.Iamgoingtovisitmygrandparents.D.Iamgoingtothecinema.参考答案：C6.Thebookisonthetable.Whoisthebookbelongto?A.TheteacherB.ThestudentC.TheparentD.Thelibrarian参考答案：B7.Theschoolstartsat8:00a.m.Whattimeisitnow?A.7:00a.m.B.8:00a.m.C.9:00a.m.D.10:00a.m.参考答案：B8.Thetrainleavesat9:00a.m.Whattimeshouldyouarriveatthestation?A.8:00a.m.B.9:00a.m.C.10:00a.m.D.11:00a.m.参考答案：A9.Theexamisnextweek.Whatshouldyoudonow?A.Studyfortheexam.B.Gototheparty.C.Watchamovie.D.Sleepallday.参考答案：A10.ThestoreisclosedonMondays.Whatdayisittoday?A.MondayB.TuesdayC.WednesdayD.Thursday参考答案：B二、填空题（共10小题，每题2分）（请把正确答案直接填写在题中横线上，填写不完整的不得分）1.It'simportanttowearahelmetwhencyclingbecause______.参考答案：itcanprotectyourheadfrominjury2.Ifyouwanttomakeaphonecall,youshouldcheckthesignalfirst.______.参考答案：makesureit'swithinrange3.Savingwaterisaresponsiblechoice.______.参考答案：ithelpstoconserveresourcesforfuturegenerations4.TheEarthisnotcompletelyround;it'sanoblatespheroid.______.参考答案：itsequatorialdiameterisslightlylargerthanitspolardiameter5.Plantsneedsunlight,water,andairtogrow.______.参考答案：withouttheseelements,theycannotsurvive6.It'ssafetoswimintheriveronlyifthewaterisclean.______.参考答案：becausepollutioncanmakeitdangerous7.Youshouldalwayslookbothwaysbeforecrossingthestreet.______.参考答案：toavoidaccidents8.Eatingjunkfoodeverydayisnothealthy.______.参考答案：itcanleadtohealthproblemslikeobesityanddiabetes9.Ifyouwanttostayhealthy,youshouldexerciseregularly.______.参考答案：itimprovesphysicalandmentalwell-being10.Thedoctortoldmetodrinkmorewater.______.参考答案：tostayhydratedandmaintaingoodhealth三、判断题（共10小题，每题2分）（正确的打“√”，错误的打“×”，把判断符号填在题后括号内）1.Thepatientshouldtakethemedicinethreetimesadayatregularintervals.参考答案：√2.Itisrecommendedtowearahelmetwhenridingabicycletopreventheadinjuries.参考答案：√3.Savingwaterisnotjustaresponsibilitybutalsoawaytoprotecttheenvironment.参考答案：√4.TheEarthisnotcompletelyround;itisslightlyflattenedatthepolesandbulgingattheequator.参考答案：×5.Itissafetoswimintheriverwithoutcheckingthewaterquality.参考答案：×6.Eatingjunkfoodeverydayisharmfultoyourhealthbecauseitlacksessentialnutrients.参考答案：√7.Theschoolstartsat8:00a.m.,andclassesendat4:00p.m.参考答案：×8.Thetrainleavesat9:00a.m.,andthejourneytakesabouttwohours.参考答案：×9.ThestoreisclosedonMondays,soitisagooddaytoavoidcrowds.参考答案：√10.It'simportanttowearahelmetwhenridingabicycletopreventheadinjuries.参考答案：√四、简答题（共8小题，每题2分）（请分点作答，语言简明、要点齐全，写在对应题目下方的横线上）1.PleasebrieflydescribethemaincontentofUnit7intheEnglishtextbook.参考答案：Unit7mainlyfocusesonthetopicof"environmentalprotection,"includingvocabularyrelatedtonature,recycling,andconservation.Italsointroducesthepresentperfecttenseanditsusageindifferentcontexts.2.WhatarethekeyvocabularywordsyoushouldlearninUnit7?参考答案：ThekeyvocabularywordsinUnit7include"pollution,""recycle,""conserve,""presentperfecttense,""speak,"and"talk."3.Howcanyouusethegrammarpointofthepresentperfecttenseindailyconversations?参考答案：Youcanusethepresentperfecttensetotalkaboutexperiences,changesovertime,andcompletedactionswithunfinishedresults.Forexample,"IhavevisitedtheGreatWall"or"Theenvironmenthasimproved."4.Explainthedifferencebetween"speak"and"talk"inEnglish.参考答案：Thedifferencebetween"speak"and"talk"isthat"speak"ismoreformalandreferstotheactofproducingspeech,while"talk"ismoreinformalandreferstotheactofexchangingwords.Forexample,"HespeaksEnglishfluently"vs."Theyaretalkingabouttheirplans."5.Whataresomecommonidiomsrelatedto"time"thatyouhavelearnedinUnit7?参考答案：Somecommonidiomsrelatedto"time"include"timeflies,""astitchintimesavesnine,"and"allingoodtime."6.HowwouldyoudescribethecharacterofMr.Smithinthereadingpassage?参考答案：Mr.Smithisdescribedaskind,patient,andenvironmentallyconsciousinthereadingpassage.Heoftenorganizesactivitiestoteachstudentsaboutprotectingtheenvironment.7.Whatisthemainideaofthearticle"ProtecttheEnvironment"inUnit7?参考答案：Themainideaofthearticle"ProtecttheEnvironment"istoraiseawarenessaboutenvironmentalissuesandencouragepeopletotakeactiontoprotectnature.8.Ifyouweretowritealettertoyourpenpalaboutyourhometown,whatwouldyouinclude?参考答案：Inalettertoyourpenpalaboutyourhometown,youwouldincludeinformationaboutthelocation,landmarks,culture,andenvironmentalissues.Youcouldalsodescribeyourdailylifeandhobbies.五、阅读理解题（共8小题，每题3分）（先阅读下面材料，再根据材料内容作答，答案写在对应题目下方的横线上）Thelocalhealthdepartmentrecentlyissuedguidelinestohelpresidentsstaysafeduringthefluseason.Accordingtothereport,thefluismostcommoninthewintermonths,especiallyfromDecembertoFebruary.Peopleshouldwashtheirhandsfrequentlywithsoapandwaterorusehandsanitizer.Coveringcoughsandsneezesisalsoimportanttopreventthespreadofgerms.Vaccinationishighlyrecommendedforeveryoneovertheageof6months.Thereportemphasizesthatifsomeonefeelssick,theyshouldstayhomefromworkorschooltoavoidinfectingothers.Additionally,itadvisesdrinkingplentyoffluidsandgettingenoughresttohelpthebodyrecover.Thehealthdepartmentalsoremindsresidentstocleananddisinfectfrequentlytouchedsurfacesregularly.Byfollowingthesesimplesteps,peoplecanprotectthemselvesandtheirfamiliesfromtheflu.1.Whatisthemaintopicofthepassage?A.ThehistoryofthefluB.ThesymptomsofthefluC.TipsforstayinghealthyduringfluseasonD.Thecostoffluvaccines参考答案：C2.Whenistheflumostcommonaccordingtothepassage?A.InthesummermonthsB.FromMarchtoMayC.FromDecembertoFebruaryD.Inthespring参考答案：C3.Whatshouldpeopledoiftheyfeelsick?A.GotoworkorschoolB.StayhomefromworkorschoolC.TakealongvacationD.Drinkalcoholtofeelbetter参考答案：B4.Accordingtothepassage,whatishighlyrecommendedtopreventtheflu?A.EatinglotsofcandyB.WashinghandsfrequentlyC.SwimmingintheoceanD.Huggingeveryone参考答案：B5.Whatdoesthehealthdepartmentsuggestdoingtohelpthebodyrecover?A.ExercisingeverydayB.DrinkingplentyoffluidsandgettingenoughrestC.EatingjunkfoodD.Takingcoldshowers参考答案：B6.Whyisitimportanttocovercoughsandsneezes?A.TolookpoliteB.TopreventthespreadofgermsC.ToshowrespectD.Tostaywarm参考答案：B7.Whatshouldpeoplecleananddisinfectregularly?A.TheirclothesB.TheirpetsC.FrequentlytouchedsurfacesD.Theircars参考答案：C8.Whatisthepurposeoftheguidelinesissuedbythehealthdepartment?A.TomakemoneyfromfluvaccinesB.ToinformpeopleabouthowtostayhealthyduringfluseasonC.ToentertainpeoplewithinterestingfactsD.Toforcepeopletostayinside参考答案：B标准答案与解析一、单项选择题1.参考答案：B解析：本题考查健康饮食。苹果、胡萝卜和葡萄都是健康的水果和蔬菜，而薯条含有较多的脂肪和热量，不利于健康。因此，选项B是正确答案。2.参考答案：B解析：本题考查健康建议的理解。医生建议每天喝至少八杯水，与选项B的意思相同。选项A、C、D与医生的建议不符。3.参考答案：D解析：本题考查日常活动。根据题干描述，弟弟在练习弹吉他，因此选项D是正确答案。4.参考答案：A解析：本题考查天气情况下的应对措施。天气预报说明天会下雨，因此应该带伞。选项B、C、D都不是正确的应对措施。5.参考答案：C解析：本题考查计划的理解。题干说明要去看望祖父母，因此选项C是正确答案。6.参考答案：B解析：本题考查物品归属。书在桌子上，说明是学生的书，因此选项B是正确答案。7.参考答案：B解析：本题考查时间判断。学校早上8点开始上课，因此现在是8点。8.参考答案：A解析：本题考查时间规划。火车早上9点出发，因此应该提前到达车站，8点到达是合理的。9.参考答案：A解析：本题考查计划的理解。考试下周进行，现在应该复习备考，因此选项A是正确答案。10.参考答案：B解析：本题考查时间判断。商店星期一关门，今天是星期二，因此选项B是正确答案。二、填空题1.参考答案：itcanprotectyourheadfrominjury解析：本题考查“交通安全与防护措施”。题干提到骑自行车时戴头盔的重要性，答案应解释头盔的作用。答案“itcanprotectyourheadfrominjury”直接点明了头盔的保护功能，符合题意。2.参考答案：makesureit'swithinrange解析：本题考查“日常沟通技巧”。题干提到打电话前检查信号，答案应说明检查信号的目的。答案“makesureit'swithinrange”解释了检查信号是为了确保通话范围，符合题意。3.参考答案：ithelpstoconserveresourcesforfuturegenerations解析：本题考查“环境保护意识”。题干提到节约用水的重要性，答案应解释节约用水的意义。答案“ithelpstoconserveresourcesforfuturegenerations”说明了节约用水对后代的益处，符合题意。4.参考答案：itsequatorialdiameterisslightlylargerthanitspolardiameter解析：本题考查“地理常识”。题干提到地球并非完全圆形，答案应解释原因。答案“itsequatorialdiameterisslightlylargerthanitspolardiameter”说明了地球是扁球体，符合题意。5.参考答案：withouttheseelements,theycannotsurvive解析：本题考查“植物生长条件”。题干提到植物生长需要阳光、水和空气，答案应解释这些元素的重要性。答案“withouttheseelements,theycannotsurvive”说明了这些元素对植物生存的必要性，符合题意。6.参考答案：becausepollutioncanmakeitdangerous解析：本题考查“水上活动安全”。题干提到在干净的水中游泳才安全，答案应解释原因。答案“becausepollutioncanmakeitdangerous”说明了污染使河水危险，符合题意。7.参考答案：toavoidaccidents解析：本题考查“交通安全规则”。题干提到过马路前要左右看，答案应解释原因。答案“toavoidaccidents”说明了左右看是为了避免事故，符合题意。8.参考答案：itcanleadtohealthproblemslikeobesityanddiabetes解析：本题考查“健康饮食”。题干提到每天吃垃圾食品不健康，答案应解释原因。答案“itcanleadtohealthproblemslikeobesityanddiabetes”说明了垃圾食品的危害，符合题意。9.参考答案：itimprovesphysicalandmentalwell-being解析：本题考查“健康生活方式”。题干提到保持健康需要定期锻炼，答案应解释锻炼的好处。答案“itimprovesphysicalandmentalwell-being”说明了锻炼的益处，符合题意。10.参考答案：tostayhydratedandmaintaingoodhealth解析：本题考查“健康建议”。题干提到医生建议多喝水，答案应解释原因。答案“tostayhydratedandmaintaingoodhealth”说明了喝水的目的，符合题意。三、判断题1.参考答案：√解析：本题考查“日常健康建议”。题干表述正确，强调按时按量服药的重要性，符合健康常识。2.参考答案：√解析：本题考查“交通安全”。题干表述正确，佩戴头盔能有效减少骑行时的伤害风险，符合安全建议。3.参考答案：√解析：本题考查“环境保护”。题干表述正确，节约用水不仅是个人的责任，也是保护环境的重要措施。4.参考答案：×解析：本题考查“地理知识”。地球并非完全圆形，而是略扁的椭球体，题干表述错误。5.参考答案：×解析：本题考查“游泳安全”。题干表述错误，游泳前应检查水质，确保安全。6.参考答案：√解析：本题考查“健康饮食”。题干表述正确，长期食用垃圾食品会导致营养不均衡，影响健康。7.参考答案：×解析：本题考查“学校作息时间”。题干表述不完整，未提供所有课程信息，无法判断是否正确。8.参考答案：×解析：本题考查“交通时刻表”。题干未提供行程所需时间，无法判断旅程是否需要两小时。9.参考答案：√解析：本题考查“商店营业时间”。题干表述正确，周一闭店可以避免人群拥挤，符合购物习惯。10.参考答案：√解析：本题考查“交通安全”。题干表述正确，佩戴头盔能有效减少骑行时的伤害风险，符合安全建议。四、简答题1.参考答案：Unit7mainlyfocusesonthetopicof"environmentalprotection,"includingvocabularyrelatedtonature,recycling,andconservation.Italsointroducesthepresentperfecttenseanditsusageindifferentcontexts.解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“单元概述”知识点。单元内容围绕环境保护主题展开，涉及自然、回收、保护等词汇，同时引入现在完成时态及其在不同语境中的使用。学生需结合教材内容进行简述。2.参考答案：ThekeyvocabularywordsinUnit7include"pollution,""recycle,""conserve,""presentperfecttense,""speak,"and"talk."解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“核心词汇”知识点。本单元重点词汇涉及环境保护主题（pollution,recycle,conserve）和语法点（presentperfecttense），以及日常用语（speak,talk）。学生需准确列举教材中的核心词汇。3.参考答案：Youcanusethepresentperfecttensetotalkaboutexperiences,changesovertime,andcompletedactionswithunfinishedresults.Forexample,"IhavevisitedtheGreatWall"or"Theenvironmenthasimproved."解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“现在完成时态的应用”知识点。现在完成时态可用于描述经历、时间变化和未完成的结果。例如，“我参观过长城”或“环境改善了”。学生需结合教材中的语法讲解进行说明。4.参考答案：Thedifferencebetween"speak"and"talk"isthat"speak"ismoreformalandreferstotheactofproducingspeech,while"talk"ismoreinformalandreferstotheactofexchangingwords.Forexample,"HespeaksEnglishfluently"vs."Theyaretalkingabouttheirplans."解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“动词辨析”知识点。“Speak”更正式，指说话行为（如“他英语说得很流利”）；“Talk”更口语化，指交谈（如“他们在讨论计划”）。学生需结合教材中的词汇讲解进行对比说明。5.参考答案：Somecommonidiomsrelatedto"time"include"timeflies,""astitchintimesavesnine,"and"allingoodtime."解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“与时间相关的习语”知识点。本单元可能涉及“时间飞逝”“亡羊补牢”“适时而动”等习语。学生需准确列举教材中的相关习语。6.参考答案：Mr.Smithisdescribedaskind,patient,andenvironmentallyconsciousinthereadingpassage.Heoftenorganizesactivitiestoteachstudentsaboutprotectingtheenvironment.解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“阅读理解人物分析”知识点。根据阅读文章，Mr.Smith被描述为善良、耐心且环保意识强，经常组织环保活动。学生需结合文章内容进行人物分析。7.参考答案：Themainideaofthearticle"ProtecttheEnvironment"istoraiseawarenessaboutenvironmentalissuesandencouragepeopletotakeactiontoprotectnature.解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“阅读理解主旨概括”知识点。文章“保护环境”的主旨是提高环保意识并鼓励人们采取行动保护自然。学生需结合文章内容进行主旨概括。8.参考答案：Inalettertoyourpenpalaboutyourhometown,youwouldincludeinformationaboutthelocation,landmarks,culture,andenvironmentalissues.Youcouldalsodescribeyourdailylifeandhobbies.解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“写作应用”知识点。写信给笔友介绍家乡时，可包括地理位置、地标、文化、环保问题以及日常生活和爱好。学生需结合写作指导进行说明。五、阅读理解题1.参考答案：C解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“健康生活”相关知识点。文章首句明确指出“Thelocalhealthdepartmentrecentlyissuedguidelinestohelpresidentsstaysafeduringthefluseason”，即当地卫生部门最近发布了指南以帮助居民在流感季节保持安全，随后全文围绕如何预防流感、流感的常见时间、生病时该怎么做等展开论述。选项A“流感的病史”在文中未提及；选项B“流感的症状”只是文章提到的一部分内容，并非主旨；选项C“在流感季节保持健康的小贴士”与文章主旨完全吻合；选项D“流感疫苗的成本”在文中未提及。故选C。2.参考答案：C解析：本题考查《2026年北师大版初中三年级英语下册第7单元课时作业及答案》中“数据理解”相关知识点。文章第二句明确指出“thefluismostcommoninthewintermonths,especiallyfromDecembertoFebruary”，即流感在冬季最常见，尤其是在12月至2月。选项A“在夏季月份”与文意相反；选项B“从3月到5月”与文意不符；选项C“从12月到2月”与文意一致；选项D“在春天”与文意不符。故选C。3.参考答案：B解析：本题考查《2026年北师大版初中