延边寒假作业答案参考精选word文档 14页.docx
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延边寒假作业答案参考精选word文档 14页.docx
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延边寒假作业答案参考精选word文档14页
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延边寒假作业答案参考
篇一:
延边寒假作业答案
第1页—第3页
1.选择题
1A2D3A4C
2.填空
(1)T=20-6h20,6Thh
(2)Q=6x105-pt6x105pQt0≤t≤6x105/p
(3)S=1.5b(4)0≤x≤70≤y≤550
3.解答题
(1)y=Q/a-x–Q/a(0≤x≤a)
(2)y=80-2x
20 (3)①-2≤x≤3 ②当x=3,y有最小值为1/2 ③当-2≤x≤0,y随x的增大而增大,当0≤x≤3,小 (4)①`v=800-50t ②0≤t≤16 ③当t=8时,v=800-50x8=400 ④当v=100时,100=800-50t T=14 第5页—第7页 选择题y随x的增大而减 1B2C3C4B5B6A7B8D 填空 (1)1 (2)y=2x+1-1(3)m<2n<3(4)y=-3x+3 (5)y=x+3(6)y=64x+48(7)S=2n+1(8)y=1/5x-630 解答题 (1)设y=kx+b -4k+b=15 6k+b=-5 k=-2b=7 y=-2x+7 (2)略 (3)①表示y与x的关系,x为自变量 ②10时离家10km13时离家30km ③12时-13时,离家30km ④13km ⑤2时-13时 ⑥15km/h 第9页—第11页 1.选择题 (1)A (2)C(3)C 2.填空 (1)y=-2x (2)m<2y="5x+3"y2="">y1(5)y=-2x+10025 (6)9 3.解答题 (1)①Q=200+20t②(0≤t≤30) (2)①y=80(0≤x≤50) y=1.9x-15(50≤x≤100) ②y=1.6x ③选择方式一 (3)①在同一直线上y=25/72x ②当x=72时,y=25 当x=144时,y=50 当x=216时,y=75 y=25/72x(0≤x≤345.6) ③当x=158.4时,y=25/72x158.4=55 (4)①y甲=2x+180 y乙=2.5x+140 ②当x=100时,y甲=200+180=380 Y乙=140+250=390 380〈390 租甲车更活算 第13页—第15页 1.选择题 (1)D (2)C(3)C 2.填空 (1)x=2 y=3 (2)x=2x>2 (3)-3-2x=-5/8y=-1/8 (4)1/20x=2 y=3 (5)y=5/4x 2.解答题 3. (1)略 (2)①依题意 -k+b=-5 2k+b=1 解得 k=2b=-3 y=2x+3 当y≥0时 2x-3≥0,x≥3/2 ②当x<2时,2x<4 则2x-3<1 即y<1 (3)①y会员卡=0.35+15 y租书卡=0.5x ②若y会员卡〈y租书卡 则0.35x+15<0.5x x>100 租书超过100天,会员卡比租书卡更合算 (4)设A(m,n) 1/2x4xm=6 m=3 n=2 A(-3,-2) y=2/3x,y=-2/3x-4 (5)①y甲=0.8x1.5X+900=1.2x+900(x≥500) 篇二: 延边教育出版社寒假作业答案 一.听力测试。 (30分) Ⅰ.情景反应。 (5分) 听两遍。 根据你所听到的句子,从A、B、C三个选项中选出最恰当的答语。 1.A.Oh,that’sallright.B.I’mveryhappy.C.Oh,that’sright. 2.A.Yes,Iwill.B.No,Iwon’t.C.No,I’mnot. 3.A.Yes,please! B.Eitherwilldo.C.That’sfine. 4.A.Heisoversixty.B.He’sadoctor.C.He’smuchbetter. 5.A.Therewas.B.Yes,therewas.C.No,therewas. II.对话理解。 (5分) 听两遍。 根据你所听到的对话和问题,从A、B、C三个选项中选出正确答案。 6.A.Aweek.B.Threedays.C.Fivedays. 7.A.Goskateboardingonly.B.GoskateboardingorplayfootballC.Readbooks. 8.A.Heisgoingtothepark.B.Heisgoingfishingwithhisfather. C.Heisgoingtothebeachwithhisfamily. 9.A.Heforgettodohishomeworkathome. B.Hedidn’tremembertobringhishomeworkwithhim. C.Helefthomewithhishomework. 10.A.Atthesecondturning.B.Betweenabookshopandaclothingshop. C.Betweenabookshopandahospital. Ⅲ.短文理解。 (20分) 听三遍。 根据你所听到的短文内容,从A、B、C三个选项中选出正确答案。 (A) 11.HowmanymealsdomanyEnglishpeoplehaveaday? A.Two.B.Three.C.Four. 12.Whatmaypeoplehavefortheirbreakfast? A.Teaoreggs.B.Porridge,eggsorbread,teaorcoffee. C.Teaandcoffee. 13.WhendoEnglishpeoplehavelunch? A.Anytime.B.One.C.Five. 14.Whatdon’tpeopleeatfortheirdinner? A.Porridge.B.Bananasandapples.C.Meatandfish. 15.WhendosomeoftheEnglishpeoplehavedinner? A.Atoneclock.B.Inthemiddleoftheday.C.Intheevening. (B) 16.Oneeveningthegirlinthepark. A.waswaitingforherboyfriendB.waslookingforsomeoneshedidn’tknow C.wasdoingexercise 17.Itwasvery_______thatday. A.verywarmB.coldC.dark 18.Themanwas________. A.lookingforhisbagB.waitingforthegirlC.puttingawaysomething 19.Thegirlwentto________. A.themanwhenhewaswalkinghereandthereB.theplacewhenthemanleft. C.thepolicestationwhenshesawtheman 20.Themanwascaught_______. A.bythegirlandherboyfriendB.whenhewasgoingtoleave C.afewdayslater 二、语言基础测试。 (40分) I.单词测查。 (10分) A.根据句意和首写字母补全单词。 (5分 1.Youmustbecarefultoc___thestreet. 2.Thet___isverybusyatthistimetoday. 3.Lucycandoherhomeworka____________,shedoesn`twantanyhelp. 4.It’si_____________tospeakloudlyinpublic. 5.Allthestudentspassedtheexame____________WangLing. B.用所给单词的正确形式,非一空一词。 (5分) 1.___________(luck)Ipassedtheexamthistime. 2.Thankyouverymuchfor____________(invite)metoyourparty. 3.WhenIsawhimlastnight,he____________(write)ane-mail. 4.Ifit___(notsnow)tomorrow,we’llgoskating. 5.Theyenjoyed____________(them)attheparty. II.单项选择。 (20分) 从A、B、C、D四个选项中选出可以填入空白处的最佳答案。 1.Canyoutellme? A.whatpresentdoeshelikeB.whatpresenthelikes C.whatpresentishelikeD.whatpresentheislike 2.—Idon'tmuchlikeplayingtennis.—Idon't_______.Ienjoy_______basketball. A.either…toplayB.too…playing C.either…playingD.neither,toplay 3.—Couldyou________thebabylaugh? —Certainly.It’seasy. A.keepB.askC.teachD.make 4.Theoldwomanhad________teethinhermouth,soshewasvery,verydifficulttoeatmeals. A.alittleB.afewC.littleD.few 5.—MustIfinishmyhomeworktonight? —No,you________. A.mustn’tB.needn’ttoC.don’thavetoD.don’tneed 6.Thesemenare_________strong.Theycaneat_________foodeverymeal. A.toomany,toomuchB.muchtoo,toomuch C.toomuch,toomanyD.muchtoo,manytoo 7.Heranswers_________everyonehere. A.surprisedB.surprisingC.weresurprisedD.weresurprising 8.—IsMrWangintheofficenow? —No,I’msurehe__________bethere.Isawhimdrivingacarinthestreetjustnow A.mustn’tB.can’tC.maynotD.needn’t 9.Peterisn’tthetalleststudentintheclass,butheistallerthan__________boys. A.alloftheB.anyotherC.alltheotherD.someofthe 10.I’mgoingto__________hospitaltoseemyuncle.Heisillin__________hospital. A./,theB.a,theC.the,aD.the,/ 11.—Tomplaysfootballwell.—___________________. A.SohedoesB.SodoesheC.SoheisD.Soishe 12.—Robert’sneverlate,____________? —_______________.Healwayscomesontime. A.ishe;No,heisn’tB.isn’the;No,heisn’t C.ishe;Yes,heisD.hasn’the;Yes,heis 13.There____________alotoftrafficinthefuture. A.willhaveB.willbeC.aregoingtobeD.isgoingtohave 14.LittleTombecomesvery________inhistoryandhefinditvery_________. A.interested,interestedB.interested,interesting C.interesting,interestingD.interesting,interested 15.Didittakeyoutwohoursyourhomeworkyesterday? A.didB.doingC.todoD.does 16.—Whosetrousersarethese? —______________,Ithink. A.TheyB.TheirC.TheirsD.Them 17.They________themathsproblemwhenIcamein. A.workedonB.wereworkingonC.wereworkingD.wereworkingfor 18.—Wouldyoumindmytakingthisseat? —__________________. A.Yes,sitdown,pleaseB.Yes,takeit,please C.No,ofcoursenotD.No,youcan’ttakeit 19.Theyarrived___________London___________acoldwintermorning. A.at,inB.in,onC.at,onD.in,at 20.—Doyouknowifhe____________toplaybasketballwithus? —Ithinkhewillcomeifhe___________freetomorrow. A.willcome;willbeB.comes;isC.comes;willbeD.willcome;is Ⅲ.句型转换。 (10分) 根据所给提示,完成句子。 每空一词,含缩略词。 1.Thisviolincostmemuchmoney.(改为一般疑问句) __________thisviolin___________youmuchmoney? 2.Shehadtodoitagain.(改为反意疑问问句) Shehadtodoitagain,________________________? 3.TheyhavelivedinthistownsincetheymovedtoNanjing.(对划部分提问). _______________havetheylivedinthistown? 4.Citieswillbeverybigandcrowded.(改为否定句) Cities________________________verybigandcrowded. 5.ItseemsthatKatehassupperathome.(改为同义句) Kate______________________havesupperathome. 三、综合运用测试。 (80分) I.完成对话。 (5分) 从方框内选择恰当的句子完成对话。 A.Well,shealwaysenjoyssportsgames,doesn’tshe? B.Ididn’tknowEvawasinterestedinphotography. C.Therearealotofphotographersthere. D.Youmeanshe’scomingtothegame,too. E.Ijusthavetocloseuptheshop. F.It’stimetogo. G.Eva’sclosingthedoor. Charley: Comeon,Steve.1 Steve: Waitamoment.2 Charley: OK. Steve: Bytheway,canwegivemysisteraridehometonight? Charley: Sure.3 Steve: Yes.Shewantstotakesomepictures. Charley: 4 Steve: Yeah.Shewantstoworkforanewspapersomeday. Charley: ButIthinkitmightbehardforhertosucceed.5 II.完形。 (20分) 从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。 Haveyou1drunkthewaterdirectly(直接)fromariver? I’msureyouransweris“2”.Perhapsyoumayhavetriedthewaterfromawell(井),orfromatap(龙头)alongtimeago.3asIknow,mostofyouonlydrinkwaterfromawaterboiler(水壶)orthebottledwaterboughtfromashownowadays(现在). Butthingswerequite4twentyyearsago.Atthattime,allthesmallrivers5uswereveryclearandthewaterwasveryclean.Ifyouwere6,youcouldjustbend(弯腰)downbytheriversideanddrinksomewater7yourhands.Itwascoolandsweet.Howpleasant(令人愉快)itwas! Butallthiswasinthepast.Things8alot.Someriverwaterisnoteven9forustowashourhands.10pity(遗憾)! 1.A.alreadyB.justC.everD.even 2.A.YesB.NoC.RightD.Wrong 3.A.HoweverB.ThoughC.SinceD.Yet 4.A.sameB.easyC.differentD.difficult 5.A.betweenB.aroundC.amongD.by 6.A.thirstyB.hungryC.tiredD.sleepy 7.A.inB.withC.onD.by 8.A.havechangedB.haveturnedC.havegotD.haveexchanged 9.A.enoughdirtyB.dirtyenoughC.enoughcleanD.cleanenough 10.A.HowB.WhataC.WhatD.Howa III.理解。 (30分) 下列材料,从A、B、C、D四个选项中选出最佳答案。
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