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苹果的零售价格是每千克5元，一次购买10千克以上按批发价，批发价格是零售价格的8折，买15千克苹果应该付 元．
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零售价格可用来计算
零售价格＝批零差价÷批发价格×100%
零售价格＝批发价格×（1＋批零差率）
零售价格＝批发价格－批零差价
零售价格＝批零差价×批零差价
某蔬菜经销商去蔬菜生产基地批发某种蔬菜已知这种蔬菜的批发量在20千克～60千克之间含20千克和60
每千克花生仁批发价7.62元零售价8.9元刘大伯批发价买进这种花生仁240千克零售价卖出后一共可得
某水果批发市场规定批发苹果不小于100千克时批发价为每千克2.5元小王携带现金3000元这市场采购苹
小明的爸爸下岗后一直谋职业做起了经营水果的生意．一天他先去批发市场用100元购甲种水果用150元购
扶贫工作小组对果农进行精准扶贫帮助果农将一种有机生态水果拓宽了市场．与去年相比今年这种水果的产量增加
李大伯承包了一个果园种植了100棵樱桃树今年已进入收获期收获时从中任选并采摘了10棵树的樱桃分别称得
200千克，3000元
1900千克，28500元
2000千克，30000元
1850千克，27750元
某蔬菜经销商去蔬菜生产基地批发某种蔬菜已知这种蔬菜的批发量在20千克～60千克之间含20千克和60
李大伯承包了一个果园种植了100棵樱桃树今年已进入收获期收获时从中任选并采摘了l0棵树的樱桃分别称得
200千克，3000元
1900千克，28500元
2000千克，30000元
1850千克，27750元
食堂购进大米和面粉各600kg大米的批发价是每千克2.55元面粉的批发价是每千克3.45元．食堂购
某天一蔬菜经营户用114元从蔬菜批发市场购进黄瓜和土豆共40kg到菜市场去卖黄瓜和土豆这天的批发价和
某水果批发市场规定批发苹果不少于100千克批发价为每千克2.5元学校采购员带现金2000元到该批发
某工厂计划生产一种创新产品若生产一件这种产品需A.种原料1.2千克B.种原料1千克.已知A.种原料每
某蔬菜经销商去蔬菜生产基地批发某种蔬菜已知这种蔬菜的批发量在20千克～60千克之间含20千克和60
某工厂计划生产一种创新产品若生产一件这种产品需A种原料1.2千克B种原料1千克．已知A种原料每千克
某蔬菜经销商去蔬菜生产基地批发某种蔬菜已知这种蔬菜的批发量在20千克～60千克之间含20千克和60千
零售价格可用来计算
零售价格＝批零差价÷批发价格×100%
零售价格＝批发价格×（1＋批零差率）
零售价格＝批发价格－批零差价
零售价格＝批零差价
扶贫工作小组对果农进行精准扶贫帮助果农将一种有机生态水果拓宽了市场．与去年相比今年这种水果的产量增
一盘西红柿炒鸡蛋用去鸡蛋0.2千克每千克10元用去西红柿0.2千克每千克5元．调料约1元零售价比成
小明的爸爸下岗后自谋职业做起了经营水果的生意．一天他先去批发市场用100元购买甲种水果用150元购乙
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在湖的两岸AB间建一座观赏桥由于条件限制无法直接度量AB两点间的距离．请你用学过的数学知识按以下要求设计一测量方案． 1画出测量图案 2写出测量步骤测量数据用字母表示 3计算AB的距离写出求解或推理过程结果用字母表示．
15分假设你们学校的英国姐妹学校校长Mrs.Amanda带领一批学生到你校来访问.假定你是李华作为学生代表向Mrs.Amanda致欢迎词并着重介绍你校的校园特色文化.内容包括: 1.介绍校园特色文化. 2.表达美好祝愿. 注意: 1.词数80左右; 2.可适当增加细节以使行文连贯.
8分EveryOctobersincetenyearsagofourorfivefriendsandIhaveheadedoutforaweekendoffishing.Myfriendssuitupintheirexpensivebootsbrand﹣namewindbreakersandsunglassesandthentotheircreditspendmostofthedaycastingintotheocean.WiththeexceptionofAndrewShelhorsetheylookdowntheirnosesalittleatmebeforetheyheadtothewaterbecauseI'mnotafisherman.Idon'tmind;it'safishingtripforthemandathinkingtripforme. ThetruefishermanofourgroupisAndrew.Whentheguysreturnfromthebeachsunburnedandempty﹣handeditisAndrewwhohascaughtahalf﹣dozenfish.WheneveryoneisreadytohittheroadhomeonSundaymorningitisAndrewwhostaystofishforafewmorehours. It'snotjustAndrew'spassionthatimpressesmeit'shissympathy.Herarelyfishesfromaboatbecausehefeelsit'sunfair;helikestobeonthelandandthefishinthewater.I'veseenhimcarefullyremoveahookfromafish'sliplikeasurgeonthencautiouslyplaceitbackintothewater. Inourearlyteenswefishedinapond.Armedwithpolesandtackleboxes钓具箱wewalkedon Sundaymorningstogettotheriver.Withtinyballsofdoughorcornforbaitwedroppedlinesfromafootbridgeneartheroadorfromunderthetraintrestle高架桥.ThefewtimesIcaughtoneIgaveAndrewanodandhegotitoffthehookbecauseheknewthattouchingthefishjustwasn'tmybag. IntruthIthrewmylinearoundbutunavoidablygrewboredandtooktothrowingrocksatglassbottlesIfoundinthewoods.ButAndrewwouldpatientlystandonthebankinhiszone.Icanpicturehimevenintoourlaterteenswithhispantsrolleduptohiskneesunhookingabrownfish. 1Whatcanbeinferredabouttheauthor'sfriendsexceptAndrew? A.Theyaresuccessfulbusinessmen. B.Theyareallgoodatdrivingandfishing. C.Theytendtoadoptacasualattitudetofishing. D.TheyhaveabadrelationshipwithAndrew. 2WhatdoestheunderlinedworditinParagraph4referto? A.Theboat. B.Thefish. C.Thehook. D.Thetacklebox. 3Whatdidtheauthorusuallydowhenboredwithfishinginhisteens? A.Hestoodquietlyonthebank. B.Hethrewrocksatglassbottles. C.Hewanderedaroundinthewoods. D.Hewrotelotsofthoughtsinhisnotebook. 4Whydidtheauthorwhitethetext? A.Tointroduceawayofentertainment. B.Tocorrectthewrongwayoffishing. C.Todescribehisinterestingfishingexperience. D.Torememberanimpressivefriend.
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文. 文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词.删除:把多余的词用斜线\划掉.修改:在错的词下划一横线并在该词下面写出修改后的词. 注意:1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. DearGrace AsyouknowitHalloweenisdrawingnear.OurclassareinhighspiritandwehavedecidedtoholdanHalloweenpartytoactualexperiencethewesternfestival.OnbehalfofmyclassmatesI'dlikeinviteyouandyourfamilytocomeandjoinus.ApartywillbeheldthisFridayafternooninourclassroom.Itwillbeadress﹣uppartyandallofuswillbedressinginHalloweencostumes.Howeverdon'tforgettowearsomescarycostumes.Itwasagoodideatobringsomecandiesforsomeguyswillplaytrickstoyouiftheyaredisappointed. Iwouldfeelgratefulthatmyinvitationcouldbeaccepted. Yours LiHua
15分LastmonthIvisitedChina1Ialwayswantedtosee.Ihavebeenlearningthecultureandthelanguage2Iwasyoung.Thefirstfourdaysoftheten﹣daytrip3spendinBeijing.WesawtheGreatWallofChinaandtheForbiddenCityshoppedatmarketsand4eatatdifferentrestaurants.Wow!I'mhereintheplaceIonlyheard5storyaboutandsawpicturesof!IspentthenextsixdaysinXi'an.6comparetoBeijingIfoundmoreofthedailylifeinChinabecauseIstayedwithaChinesefriendwhowelcomedmehomewithopenarmsandsodidhisfamily.Itwas7amazingexperiencetodipintotheculture.Xi'anreallygavemeachance8meetnewpeopleandfigureoutwhattheirliveswerelikeonaday﹣to﹣daybasis.IwasabletopracticeandimprovemyChinesemorethanever.Besidesnewvocabularymy9abletocommunicateimprovedalot.Goingacrosstheworldtoaplace10completedifferentfromminewaseye﹣openingandinspiring.ItgavemeanewviewonmylifewhichIwillconstantlyusetocomparetomydailylifebackhome.
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数学兴趣小组几名同学到某商场调查发现一种纯牛奶进价为每箱40元厂家要求售价在40～70元之间若以每箱70元销售平均每天销售30箱价格每降低1元平均每天可多销售3箱．老师要求根据以上资料解答下列问题你能做到吗 1写出平均每天销售量y箱与每箱售价x元之间的函数关系 2写出平均每天销售利润W元与每箱售价x元之间的函数关系 3现该商场要保证每天盈利900元同时又要使顾客得到实惠那么每箱售价为多少元 4你认为每天赢利900元是牛奶销售中的最大利润吗为什么
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10分AhospitalhasbeenforcedtobanPokemonGoplayersfromthesiteafteramonsterhub妖怪枢纽站wasfoundintheA&Edepartment.RoyalStokeUniversityHospitaldiscoveredthatitscasualtyunit急诊室isonthesamespotasaPokemonGo‘gym'﹣whereplayerscantraintheirnewlycaughtNintendocreatures.TheUniversityHospitalsofNorthMidlandsTrustagreedlastweekthatpatientscanplayPokemonGoonwardsbecausewalkingaroundishealthy.ButtheTrusthasbeenforcedtopostawarningonitswebsiteaboutpublicaccesstoA&E.ItsaidifPokemonGobecomesamajorannoyanceitwouldaskNintendo﹣﹣whichdecidesonthelocationsofthevirtualgymsaccordingusingGPS﹣﹣tohaveitremovedfromthepremises道馆.KevinParkerassociatechiefnursesaidMembersofthepublicwhodonotneedtobeatRoyalStokeshouldnotattempttoenterA&Eoranyotherpartofthehospitalbuildingtoplaythegame.TheA&Edepartmentisincrediblybusythissummer.Wewantthepublictounderstandthatanybodywhovisitsthehospitalsolelytoplaythegamewillprovideanunwanteddistractiontotheimportantworkofthehospital.I'malsoawareofvariousreportsinthemediaofunsafeareasthatthegamehasbeenplayedin.RoyalStokeUniversityHospitalisasafeareawheregamerscanenjoyPokemonGo.MichelleHarristheTrust'smanagersaidthegamecouldstillbeplayedbythosealreadyinhospital.WerecognizethatthePokemonGogameencourageswalkingandexercisewhichissomethingthattheTrustisequallykeentopromoteshesaid.ThereareanumberofwalkingroutesestablishedthroughouttheTrustthatcanbeusedtocombinewalkingandplayingthegame.Walkingjust30minutesfivetimesaweekcanhelpreducetheriskofpreventableillnessessuchasobesitydiabetesandheartdisease.TherehavebeenseveralwarningsaboutthegamesinceitsUKrelease.LastweekagroupofteenagersinWiltshirewereleftstrandedalmost100ftundergroundaftertheygotcarriedawaysearchingforPokemonGocharacters.Thefourboysaged16and17endedupgettinglostandhadtowaittogetaphonesignalbeforetheycouldcallforhelp.EventuallytheycontactedDorsetandWiltshireFireandRescueteamwhotookthemtosafety.DamienBenceofthefireandrescueteamsaid:PokemonGoisobviouslyleadingpeopleintodangeroussituations.1ItseemsthatPokemonGoisagame.A.designedtohelppatientsinhospitalrecoversoonerB.helpingcuresuchdiseasesasobesitydiabetesandheartdiseaseC.encouragingplayerstowalkandexerciseinsteadofstayingindoorsD.warningteenagersoftheplaceseasytogetlostorattacked2TheA&Edepartmentisincrediblybusybecause.A.morepatients'arrivalincreasestheworkloadoftheA&EdepartmentB.doctors'playingthegamemakestheA&EdepartmentlessefficientC.players'injuryincreasestheworkloadoftheA&EdepartmentD.players'arrivaldisturbstheworkoftheA&Edepartment3Theunderlinedwordinthelastparagraphprobablymeans.A.hurtB.disturbedC.trappedD.threatened4Thepassageismainlyabout.A.thenegativeeffectsofPokemonGosinceitsUKreleaseB.theapplicationsofPokemonGoinhospitalssinceitsUKreleaseC.thepopularityofPokemonGosinceitsUKreleaseD.theestablishmentofPokemonGovirtualgymssinceitsUKrelease
30分WhenIwasinthe8thgradeinOhioagirlnamedHeleninmyclasshadaterribleaccident.Asshewas1tothebusinordernottomissitsheslippedontheiceandfellunderthebackwheelsofthebus.She2theaccidentbutwasparalyzedfromthewaistdown.Iwenttoseeherinmy13﹣year﹣old3thinkingthatshewouldn'tlive4fromthenon. OvertheyearsI5anddidn'tthinkmuchaboutHelenafterthat.ThreeyearsagoinFloridamyoldestsonwashitbyacarwhileridinghisbikewhich6aterriblebraininjury.WhileIwaslookingaftermysonaladywhosaidshewasthehospital'ssocialworkercalled.Itwasaan7tryingday.Iburstintotearsfornoreasonand8. Ashorttime1aterabeautifulwomaninawheelchair9intomyson'sroomwithaboxoftissues.After16yearsIstill10Helen.Shesmiledhandedmethetissuesandhuggedme.ItoldherwhoIwasandafterwebothwentthroughthe11ofthatshebegantotellmeabouther12sincewelastsaweachother.Shemarriedhadchildrenandgotherdegreesothatshe13thepathforthosepeoplewhowereless14thanher.Shetoldmethatiftherewasanythingshecouldgivemeitwouldbe15. LookingatthiswonderfulgivingpersonIfelt16.ButIalsofeltthefirsthopeIhadsincelearningthatmysonwas17.FromthispersonthatIthoughtwouldhaveno18oflifeIlearnedthatwherethereislifethereishope.Mysonmiraculously19andwemovednorthbutIoweHelena20thatIcanneverrepay. 1A.walking B.riding C.running D.driving 2A.missed B.survived C.existed D.escaped 3A.mind B.memory C.wisdom D.experience 4A.equally B.calmly C.carefully D.normally 5A.studied B.moved C.worked D.changed 6A.suffered B.prevented C.bore D.caused 7A.normally B.particularly C.necessarily D.continuously 8A.hungup B.showedoff C.rangback D.felldown 9A.pushed B.slid C.rolled D.rushed 10A.realized B.knew C.recognized D.reminded 11A.shock B.sorrow C.despair D.pride 12A.life B.habit C.family D.work 13A.improved B.smoothed C.cleaned D.opened 14A.rich B.healthy C.strong D.fortunate 15A.money B.hope C.pity D.medicine 16A.small B.pitiful C.weak D.shameless 17A.blind B.ill C.hurt D.senseless 18A.use B.value C.meaning D.quality 19A.treated B.worsened C.relieved D.recovered 20A.fortune B.lesson C.debt D.hope
30分Itookmysontoapopularfastfoodchaintodayatlunchforatreat.Itseemseveryoneelsehadtheexact1idea.Sotheplacewas2! Idrovearoundthesmallparkinglotfor5minutes3foraspot.I4foundone.Aladyreturningher5waspreparedtoleavesoIfollowedherandwaited6forhertomakeroomforme.7IdidthisIlookedinmybackviewmirrorandnoticedayoungmanswiftlypullup8me.Assoonashesawmycarlightonforthespothebeganhittinghissteeringwheel9andshoutinglotsofrudewords.Iknewthiswasn'tatmebutattheabsolute10thathehadmissedaspot.Ifelthis11.Ihadbeen12theplaceforagestoo. Asthelady13outofthespotIdidsomethingthat14shockedmyself.Iletthemantakethespot.I15mycarlightanddrovestraightpast. 16themanwassoshockedandpuzzledthathewas17ofwhattodonext.Iwounddownmywindowreachedoutmyhandand18forhimtotakeitcallingoutatthesametimeIt'syours. NowIdon'tknowifI'mextremely19atthemoment.ButafterIdidthisdeepdownIknowitwasthis20thatevenshockedme.Becauseonceyouplantaseedofloveitwillblossominthefuture. 1A.strange B.same C.funny D.simple 2A.quiet B.convenient C.safe D.crowded 3A.waiting B.accounting C.paying D.apologizing 4A.occasionally B.immediately C.eventually D.firstly 5A.seat B.room C.store D.car 6A.patiently B.nervously C.hopelessly D.surprisingly 7A.If B.Though C.As D.Since 8A.above B.behind C.beside D.under 9A.gently B.cautiously C.angrily D.bravely 10A.punishment B.excitement C.amusement D.disappointment 11A.pain B.fear C.joy D.honesty 12A.using B.circling C.covering D.exploring 13A.walked B.ran C.drove D.rode 14A.just B.even C.still D.yet 15A.turnedon B.threwaway C.knockeddown D.turnedoff 16A.Forexample B.Asaresult C.Onthecontrary D.Inshort 17A.unsure B.unafraid C.ashamed D.careful 18A.gestured B.arranged C.longed D.appealed 19A.calm B.bored C.regretful D.emotional 20A.wealth B.mistake C.kindness D.food
7.5分I'mafraidKirawillbealittlelatethereceptionistattheagencytoldme.IhadbeentryingtoconvincemyselfthatallthebadthingsIhadreadaboutmodelswererubbishbutthewordsdifficultandunintelligentkeptcomingintomyhead.AndnowKirawasgoingtobelate.Howlate?Anhour?Threehours?Maybeshewouldn'tcomeatall.Whatifshehaddecidedavisittothehairdresser'swouldbemorefunthantalkingtome?Ifshewaslateshewouldbeinahurry.Shecouldbeinaterriblemoodanddecidenottoanswermyquestions. ButwhenthewinneroftheLooksmagazinesupermodelcompetitionwalkedinshewassmilingrelaxedandapologetic﹣﹣andwithhermother.Kirawasnotdressedinexpensive﹣lookingdesignerclothesbutinasimpleblackdressandtrainingshoes.Therewasnosignofaselfishattitude;shewasjustaveryfriendlytallprettygirl.Allmodelsundertheageof16musttakeanadultwiththemwhenevertheyworksheexplainedandapartfromlookingunbelievablyyounghermotherwasanormalmum﹣﹣andveryproudofhersuccessfuldaughter. Kiragivestheimpressionofbeingslightlypuzzledbyhernewfoundfame.Itwasheroldersisterwhodecidedthatsheshouldtakepartinthemodelcompetition. TheachievementofbeingselectedforthefinalgaveKiratheconfidencetogothroughwithitandsheperformedperfectly.ShewoneasilyandtheSelectModelAgencyinLondonimmediatelyofferedherwork. Kiranowfindsthatoneofthehardestthingsshehastodoistomanagehertwoseparatelives.Butherfriendsandteachershavebecomeaccustomedtohavingastaramongthem.They'rereallyproudofmeshesays.Howeverafewunkindpeopleatherschoolarerudeabouthersuccess.TheythinkIhavetoohighanopinionofmyselfThiskindreadingofcommentmustbehardforKiratodealwithsincetherecan'tbemanypeopleassuccessfulasherwhoarelessself﹣important.ButshesaysTheythinkthatbecauseI'vesuddenlybecomeamodelIcan'tstaythesame.Buttheonlythingthat'schangedisI'vebecomemoreconfident.Istandupformyselfmore. Asabusymodelthoughhersociallifeisobviouslyaffected.TheSelectagencycanringatanytimeandtellherthatsheiswantedforajobthenextday.IfmyfriendsaregoingouttogetherIcan'tsayI'llcomebecauseIdon'tknowwhatI'mdoingthenextday.Ican'treallymakeplansandifIdotheysometimesgetbrokenbutmyfriendsaregoodaboutit.Theydon'tsay'Ohyou'realwaysgoingoffmodellingnow;youneverhavetimeforus.' Kirahasthelooksabilityandsupporttohaveagreatcareeraheadofher.Andnotmanypeoplecansaythatbeforetheyevensittheirschool﹣leavingexams. 1BeforeshewenttotheinterviewwithKiratheauthor. A.didnotexpecttolikeKira B.wasawarethatKiramightbelate C.wasunsureofwhatquestionstoaskher D.wasafraidthatKirawoulddislikeher 2WhatdoesKirathinkaboutotherpeople'sreactionstohersuccessatschool? A.Sherealizeswhysomepeoplearecriticalofher. B.Sheexpectspeopletostarttreatingherdifferentlysoon. C.Shefeelsthatsomecriticismsofherbehaviorarecorrect. D.Shethinksthatpeoplearepayingtoomuchattentiontoher. 3WhatdowelearnaboutKirainthelastparagraph? A.Shedoesn'texpecttobeamodelforlong. B.Sheisalreadythinkingofanewcareer. C.Sheislikelytosucceedasamodel. D.Shemaynottakeherschoolexam.
8分Themoonanditspossibleinfluenceoverhumanbehaviorshavebeenobjectsoftalesforcenturies.Althoughthefullmooncan'tturnpeopleintowerewolves狼人somepeopledoblameitforcausingabadnight'ssleepordiscomfort. Tofindoutiflunarphases月相affectedhumansaninternationalgroupofresearchersstudiedchildrentoseeiftheirsleepingpatternschangedoriftherewereanydifferencesintheirdailyactivities.Theresearchstudiedatotalof5812childrenfromfivecontinents.Datacollectiontookplaceover28monthswhichisthesameasthenumberoflunarcycles.Thesewerethendividedintothreelunarphases:fullmoonhalf﹣moonandnewmoon. Thefindingsofthestudyindicatedthatingeneralsleepdurationaroundfullmoonreportedanaveragedecreaseoffiveminutescomparedtonewmoon.Ourstudyprovidesevidencethatthemoondoesn'tseemtoinfluencepeople'sbehaviorssaidDr.Jean﹣PhilippeChaputfromtheEasternOntarioResearchInstitute.Theonlysignificantfindingwasonepercentsleepdecreaseinfullmoon.Howeversleepingforfiveminuteslesstimeduringafullmoonisnotadangertohealth.Ourbehaviorsarelargelyinfluencedbymanyotherfactorslikegeneseducationandincomeheadded. FolktalesandevencertainexamplessuggestthatbehaviorsofhumansandanimalsareaffectedbylunarphasesDr.Chaputexplained.Whetherthereissciencebehinditornotthemoonsecretwillcontinuetoattracthumancivilizationsintheyearstocome. 1Wheredoesthemoon'sbadinfluenceonhumanbehaviorsusuallycomefrom? A.Tales. B.Textbooks. C.Newsreports. D.Scientificpapers. 2Whydidtheresearchlast28months? A.Toattractmoreattention. B.Tocoverthelunarcycles. C.Tolookintomorechildren. D.Tocollectasmuchdataaspossible. 3Whatcanbeconcludedfromthefindings? A.Weshouldgotobedfiveminutesearlierduringafullmoon. B.Themoonisamajorcausetoaffectoursleepandbehaviors. C.Weshouldn'tworryaboutthemoon'sinfluenceoverhealth. D.Themoonplaysasignificantroleinchildren'ssleepingpatterns. 4HowdoesDr.Chaputfeelaboutthetopicofthemooninfluence? A.It'sboring. B.It'sworrying C.It'sfrightening. D.It'sinteresting.
8分USscientistssaytheyhavepouredcoldwateronthetheorythatwashinghandswithhotwaterkillsmoregerms细菌thanunheatedwater.Thesmallstudyof20peoplefoundusingwaterat15C59Flefthandsascleanaswaterheatedto38C100F.NationalHealthServiceNHSrecommendsthatpeoplewashtheirhandsineithercoldorwarmwater.InthisstudyscientistsatRutgersUniversity﹣NewBrunswickwantedtofindoutifpopularassumptionsaboutthebenefitsofwarmorhotwaterandofficialguidanceonhotwater﹣giventothefoodindustryintheUS﹣heldtrue.Theyasked20peopletowashtheirhands20timeseachwithwaterthatwas15C59F26C79For38degrees100F.Volunteerswerealsoaskedtoexperimentwithvaryingamountsofsoap.Beforetheystartedtheteststheirhandswerecoveredinharmlessbugs.Researcherssaytherewasnodifferenceintheamountofbugsremovedasthetemperatureofthewaterortheamountofsoapchanged.ProfDonaldSchaffnersaid:Peopleneedtofeelcomfortablewhentheyarewashingtheirhandsbutasfaraseffectivenessgoesthisstudyshowsusthatthetemperatureofthewateruseddidnotmatter.Howevertheresearchersaccepttheirstudyissmallandsaymoreextensiveworkisneededtodeterminethebestwaystoremoveharmfulbacteria.IntheUKNHSexpertssaypeoplecanusecoldorhotwatertowashtheirhands.Theysayhandsshouldbewashedforatleast20secondsandstresstheimportanceofusingenoughsoaptocoverthewholesurfaceofthehands.Theirguidancefocusesonrubbinghandstogetherinvarious.waystomakesureeachsurfaceofeachhandisclean.1WhatdoestheunderlinedphrasepouredcoldwaterinParagraph1probablymean?A.Proved.B.Created.C.Contradicted.D.Accepted.2Aftertheywashedtheirhandswitheitherhotorcoldwater.A.volunteersnearlyhadthesameamountofgermremovedB.volunteersalltalkedaboutAmericanfoodindustryC.volunteersstillhadmuchgermontheirhandsD.volunteersalldidn'tfeelverycomfortable3Howdoresearchersfeelabouttheirstudy?A.Itispopular.B.Itisincomplete.C.Itisconvincing.D.Itisabstract.4Whichofthefollowingisthebesttitleforthetext?A.UsingColdWaterInsteadofHotWaterB.HowtoUseColdWatertoWashHandsC.ItIsBettertoWashHandsinColdWaterD.WashingHandsinColdWaterasGoodasHot
6分 HighSchoolCourseRequirementsforCollegeAdmissions Whileadmissionsstandardsvarygreatlyfromoneschooltoanothernearlyallcollegesanduniversitieswillbelookingtoseethatapplicantshavecompletedastandardcore核心curriculum.Asyouchooseclassesinhighschoolthesecorecoursesshouldalwaysbethemostimportant.StudentswithouttheseclassesmaybeautomaticallydisqualifiedforadmissionIngeneralatypicalhighschoolcorecurriculumlookssomethinglikethis English:4years ForeignLanguage:2to3years Math:3years Science:2to3yearsincludinglabscience SocialStudiesandHistory:2to3yearsArt:1year Keepinmindthattherequiredcoursesforadmissiondifferfromtherecommendedcourses.Atselectivecollegesanduniversitiesadditionalyearsofmathscienceandlanguagewillbenecessaryforyoutobeacompetitiveapplicant. WhencollegescalculateyourGradePointAverageGPAforadmissionspurposestheywilloftenignoretheGPAonyourtranscript成绩单andfocusonlyonyourgradesinthesecoresubjectareas.Gradesforphysicaleducationmusicperformanceandothernon﹣corecoursesarenotasusefulforpredictingyourlevelofcollegereadinessasthesecorecourses.Thisdoesn'tmeanthatelectivesaren'timportant.Collegesdowanttoseethatyouhavealargevarietyofinterestsandexperiencesbuttheysimplydon'tprovideagoodwindowintoanapplicant'sabilitytohandlestrictcollegecourses. Corecourserequirementsvaryfromstatetostateandmanyofthemoreselectivecollegeswillwanttoseeastronghighschoolacademicrecordthatgoeswellbeyondthecore.AdvancedPlacementIBandHonorscoursesareamusttobecompetitiveatthemostselectivecolleges.Inmostcasesthestrongestapplicantstohighlyselectivecollegeswillhavefouryearsofmathincludingcalculusfouryearsofscienceandfouryearsofaforeignlanguage. 1Howmanycoursesareincludedinatypicalhighschoolcorecurriculum? A.Three B.Six C.Eight D.Ten 2Whatdoesyournon﹣corecoursesmeanwhenyouapplytocollege? A.Yourintelligencelevel B.Youracademicstandard C.Yourtalentsandcreativity. D.Yourinterestsandexperiences 3Whowillmostprobablybeinterestedinthetext? A.Highschoolstudents B.Highschoolteachers C.Collegestudents D.CollegeteachersB
7.5分Deardaughters MostparentstelltheirchildrenYoucanbeanythingyouwantwhenyougrowup.IfeelthesameandIsaythisoften.ButIalsowantyoutounderstandthatrealizingyourdreamscomesfromhardworksomegoodluckandgoodtiming. Herearesomewordsofwisdomforyouasyoumakeyourwayintheworldfromanentrepreneur企业家andfromyourmama. 1.Beopen﹣mindedtochangingyourpathalongtheway InhighschoolIwantedtobeapolitician.IleftmyhometownandwentofftocollegeinWashingtonDC.ThereIdiscoveredthatIlovedtosupportwomen.IttaughtmethatI'mcreativeastrongleaderandgreatatmarketing.AsaresultImovedontobetheheadofanationalhealthcarenonprofit.Becomingamotherwhileinthatjobopenedmymindtolaunchingabreastpumpbag储奶袋business.NowIrunahighlysuccessfulcompanythatIstarteduponmyown.I'mnotapolitician! 2.Failureiscriticaltoyoursuccess Failurecanbeheartbreaking.ButIwilltellyouthateveryfailureI'vehadalongthewayhasabsolutelymademebetter. Failingthebigmathexaminhighschoolandgoingtosummerschoolwasembarrassing.IeventuallypassedandI'veneverfailedanexamagain.Ilearnedfromthatexperiencetoaskforhelp.NowIaskforhelpinbusinessallthetime. I'mproudtobearolemodeltoyouasamomandanentrepreneur.IhopeIinspireyoutobelievethatyoucanbeanythingyouwant.Itwillbemypleasuretowatchyourlivesunfoldbeforemyeyes. Love Yourmom 1Inthewriter'sopinionwhatdoesittaketorealizeone'sdream? A.Failurehardworkandgoodtiming. B.Anopenmindfailureandhardwork. C.Hardworkgoodluckandgoodtiming. D.Agooddreamanopenmindandhardwork. 2Whatdidthewriterlearnfromherfailure? A.Failurecanmakeusembarrassed. B.Weshouldn'tgetangrywhenwefail. C.Don'tcaretoomuchaboutyourfailure. D.It'simportanttoturntoothersforhelp. 3Whichofthefollowingwordsbestdescribethewriter? A.Politicalandproud. B.Caringandcautious. C.Modestandunlucky. D.Flexibleandsuccessful.
8分InthepastdecadeIhaveoccasionallybumpedintostudentswhoseattentionislimitedtoatelephonescreen.Ineverusedaso﹣calledsmartphoneuntilmyoldcellphonebecamewornandIhavebeencuriousaboutwhatpeoplefindsoappealingtothem. InoneofmyclasseslasttermIofferedanexperimentaloptioninplaceoftheusualresearchpaper.StudentscouldkeeparecordofaweekwithonphonesnoFacebooknoSnapchatnosocialmediaatall.Thestudentsmostlyhadgrownupwithsmartphones.Manyexpressedfearoflivingforatimewithoutone.Itwasablackholethelastmealbeforetheelectricchair. ForthefirstdayortwoalmosteveryonesaidthatbeingwithoutsocialmediawasboringespeciallystandinginlineatStarbucks.Nexttoboredomwaslonelinessandanxiety.Disconnectingfromtechnologyfeltlikedisconnectingfromlife.Iwasleftout.saidonestudent. Aroundthreeorfourdaysmanynoticedchangesintheirbehaviors.Sleepandenergylevelsimproved.Severalwenttothegymmoreoften.Ihadanoceanoftimetoplayin.Socialrelationschangedenormously.Ihaddinnerwithfriendsandwetalked.Ireadabookmyparentsgavemeinhighschool.OnceIstartedIcouldn'tstop.OnespoketoaneighborinclassImadearealfriend.Ihadn'tdonethatsinceprimaryschool.Manydiscoverednature.IactuallystoppedtoadmirethescenerybutquicklymovedonbecauseIwasworriedthatpeoplewouldseemestaringatatreewhichisabitstrange.Severalweresurprisedatthewildlifeoncampus.IhadalwaysknowntherewererabbitsbirdsandsquirrelsbutIneverrealizedhowmanytherewere.IwonderedwhatelseImighthavemissed. Studentswhotookpartintheexperimentdiscoveredaworldbeyondwhatonecalledtherealbutnotrealworldoftechnology.TheywerelikelyassurprisedatwhattheyfoundasIwas. 1Whatcanweknowabouttheexperimentinthetext? A.Itwasconductedbyacellphoneresearcher. B.Itletstudentsexperiencearealworldwithoutsocialmedia. C.Studentslearnedtotrysomethingchallengingthroughit. D.Theauthorexploredafantasticworldduringtheexperiment. 2Whatdoablackholeandthelastmealbeforetheelectricchairindicate? A.Thetheoryoftheexperiment. B.Thepossibleresultsofstudents'research. C.Thedangersthatonemeetswithoutphones. D.Thestudents'horroratalifewithoutsmartphones. 3Howdothestudentsfeelabouttheresultoftheexperiment? A.Disappointed. B.Amazed. C.Ambiguous. D.Negative. 4Whatisthebesttitleforthetext? A.Students'discoveryofhowtoreconnectwiththeworld. B.Students'variousreactionstoonlineconnection. C.Students'eagernesstolivealifewithouttechnology. D.Students'assignmentonhowtoliveameaningfullife.
求不等式组的非负整数解．
1分Thebuildingconstructatpresentisthedormitoryforourteachers.
10分Robotshavebeentakingourjobssincethe1960s.Howeverhumanshaven'tbecomecompletelyredundant多余的becausetheserobotsmaybeveryefficientbutthey'realsokindofstupid.1.Theyjustactinveryaccuratebutverylimitedways.Humansarestillneededtoworkaroundrobotsdoingthejobsthemachinescan'tdoandfixingthemwhentheygetstuck.Butthisisallsettochangethankstoanewwaveofsmarterandbettervaluemachinesthatcanadapttomultiple数量多的tasks.2. Theera时代ofIndustry4.0isbeingdrivenbythesametechnologicaladvancesthatenabletheabilitiesofthesmartphonesinourpockets.Itisamixoflow﹣costandhigh﹣powercomputershigh﹣speedcommunicationandartificialintelligence.3.Theycanadapttodifferenttasksandevenorganizetheirworktomeetdemandswithouttheinputofhumans. 4theyarestillnotassmartasus.Today'sindustrialartificialintelligenceoperatesatanarrowlevelwhichgivestheappearanceofhumanintelligenceexhibitedbymachinesbutdesignedbyhumans. 5.Similartobigdataanalysisitprocesseslargequantitiesofdatainrealtimetomakedecisionsaboutwhatisthebestactiontotake.Thedifferenceisthatthemachinelearnsfromthedatasoitcanimproveitsdecision﹣making.AperfectexampleofdeeplearningwaspresentedbyGooglesAlphaGosoftwarewhichtaughtitselftobeattheworld'sgreatestGo围棋players. A.Theydonotthink B.Butthereisstillsomewaytogo C.Whilethesemachinesaregettingsmarter D.What'scomingnextisknownasdeeplearning E.Itcomesdowntothequestionofwhatarobotreallyis F.Thischangewillbesosignificantthatitwillcreateanewindustrialrevolution. G.Thiswillproducesmartrobotswithbettersensingandcommunicationabilities.
10分假设英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处错误每句中最多有两处错误.错误涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意: 1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. AfterschoolasusualIwentbackhome.OnthebusIfindawomanwithacutebabystandingbesidesmeandhavingdifficultyholdingontothegrabpole.InspitemyownexhaustionIrosefrommyseatandgavethemawaywithouthesitationtoherandthebaby.Shethankedmeseveraltimessincerelythatmademefeelextremelyproud.Iwasrealizedmylittlefavorcouldrealmakeadifferencetoapersonwhowasbadlyinneedofit.ArrivedhomeIalmostforgotmytiredness.IwaslostinhappinessesbecauseIdidalittleforastrangerandIgainedalot.
已知如图在直角坐标系中⊙C与y轴相切且C点的坐标为﹣10直线l过点A10且与⊙C切于点D 1∠DAC＝° 2求直线l的解析式 3若在直线l上存在一点P使△APC为等腰三角形求P点的坐标．
30分Ilearnedthislessonacoupleofyearsago.ThatdayItooka1toGrandCentralStation.Weweredrivinginthe2lanewhenallofasuddenablackcarjumpedoutofaparkingspaceright3us.Mytaxidriverslammed猛踩onhisbrakesandalmost4thecar'sbackendbyjustten5!Thedriveroftheothercarwhoalmostcausedabigaccident6hiscarandstartedyellingbad7atus.Thetaxidriverjustsmiledand8attheguy.AndImeanhewas9.SoIsaidWhydidyoujustdothat?Thisguyalmost10yourcarandsentusto11!AndthisiswhenmytaxidrivertoldmewhatInowcallthelawofthegarbagetruck. Manypeoplearelikegarbagetrucks.They12aroundfullofgarbagefulloffrustrationfullof13andfullofdisappointment.Astheirgarbage14uptheyneedaplacetodumpitandifyouagreethey'lldumpitonyou.Whensomeonewantstodumptheir15onyoudon'ttakeit16.Youjustsmilewavewishthemwelland17.You'llbehappyatwhatyoudo. IstartedthinkinghowoftendoIletgarbagetrucksrunrightoverme?AndhowoftendoItaketheirgarbageand18ittootherpeople?ThatdayIsaidI'mnotgoingtodothatanymore.Whataboutyou?Whatwillhappeninyourlifeifyouletmoregarbage19passyouby?Lifeistooshorttowakeupinthemorningwith20. 1A.taxi B.bus C.subway D.bike 2A.flat B.wide C.right D.clear 3A.inbackof B.infrontof C.beside D.beneath 4A.opened B.removed C.observed D.kissed 5A.inches B.meters C.miles D.yards 6A.squeezed B.brokeawayfrom C.gotoutof D.kicked 7A.means B.words C.languages D.solutions 8A.waved B.pointed C.aimed D.glared 9A.grateful B.aggressive C.merciful D.friendly 10A.handled B.undertook C.ruined D.abused 11A.prison B.hospital C.school D.police 12A.show B.turn C.run D.gather 13A.anger B.imagination C.confidence D.pride 14A.puts B.makes C.takes D.pile 15A.happiness B.problems C.expectation D.will 16A.differently B.attentively C.seriously D.deliberately 17A.fight B.weep C.fleeaway D.moveon 18A.bring B.spread C.convey D.offer 19A.collectors B.cans C.bags D.trucks 20A.regrets B.catastrophes C.hopes D.ambitions
小明就本班同学参加各项体育运动的情况进行了一次调查图1和图2是他根据调查所得的数据绘制的两份不完整的统计图请你根据图中提供的有关信息回答以下问题 1求该班有多少名学生 2在图1中将表示“田径”的部分补充完整 3在扇形统计图中计算出表示“其它”部分所对应的圆心角的度数 4若全年级有500人请你估算出全年级参加“田径运动”的人数．
7.5分Acellphoneisoneofthefewthingsthatweholdclosetoourfacesallthetimeandyetitcouldpossiblyexplode﹣thisiswhatmadetherecentSamsung'sGalaxyNote7smartphoneaccidentssoshocking.AccordingtotechnologynewswebsiteTheVergeflawed有瑕疵的phonebatteriesmightbetoblame.Evenifyouarenotasciencestudentyouprobablyknowthatitiscommonsensethatthenegativeendandthepositiveendofthebatteryshouldnevertouch.Iftheydothebatterywillshort﹣circuit短路causingapowerfulelectricalreactionthatcandestroythebatteryandcauseafire.Thisiswhyalllithium﹣ion锂离子batteries﹣thekindthatcanbefoundinmanyofourdevices电子设备liketabletsandcameras﹣haveaseparatorlayerinsidetostopthetwoendsfromtouchingoneanother.ButsomehowtheseparatorsinsomeoftheSamsungphonesbrokecausingexplosions.Overchargingisanotherproblemthatcanmakebatteriesheatupquickly.Fortunatelymostbatteriesaredesignedtobeabletoautomaticallystopchargingoncetheyarefullycharged.ButagainthissomehowfailedtohappeninsomeoftheSamsungphones.AccordingtoLyndenArcheramaterialsscientistatCornellUniversityUSwehavealreadyachieved90percentofthebatterylifepossiblefromalithium﹣ionbattery.Customers'demandsthattheirdevicesgetthinnerandtheirbatteryhavealongerlifehavegivenproducerslittlechoicebuttotrytoputmorepowerintothinnerbatteries.Howeverthemoreenergyyouputintoaboxthemoredangerousit'sgoingtobe.1Aseparatorlayerisputinlithium﹣ionbatteriesinorderto.A.ensurealongerbatterylifeB.reduceacertainelectricalreactionC.connecttheanodeandthecathodeD.preventabatteryfromshortcircuiting2WhatarethepossiblereasonsfortheSamsungphoneexplosions?A.Pushingthelimitsofbatteries.B.Shortcircuitingandoverheating.C.Overchargingandthinnerbatteries.D.Automaticchargingandbrokenseparators.3Whatisthewriter'smainpurposeofwritingthearticle?A.Todescribeproblemsfacingcellphoneproducers.B.Towarnusaboutthedangersoflithium﹣ionbatteries.C.Toteachuscommonsensewhenitcomestobatteries.D.ToexplainthereasonsfortheSamsungphoneexplosions.
一布袋中放有红黄白三种颜色的球各一个它们除颜色外其他都一样小亮从布袋中摸出一个球后放回去摇匀再摸出一个球． 1小亮第一次恰好摸出一个白球的概率是多少 2请你利用列举法列表或画树状图分析并求出小亮两次都能摸到白球的概率．
8分AyearaftergraduationIwasofferedapositionteachingawritingclass.TeachingwasaprofessionIhadneverseriouslyconsideredthoughseveralofmystorieshadbeenpublished.IacceptedthejobwithouthesitationasitwouldallowmetowearatieandgobythenameofMr.Davis.MyfatherwentbythesamenameandIlikedtoimaginepeoplegettingthetwoofusconfused.WaitaminutesomeonemightsayareyoutalkingaboutMr.DavistheretiredmanorMr.Davistherespectablescholar?ThepositionwasofferedatthelastminuteandIwasgiventwoweekstoprepareaperiodIspentsearchingforbriefcaseandstandingbeforemyfull﹣lengthmirrorrepeatingthewordsHelloclass.I'mMr.Davis.SometimesIwouldgivemyselfanaggressivevoice.SometimesIwouldsoundexperienced.ButwhenthedayeventuallycamemynerveskickedinandthetrueMr.Daviswasthere.Isoundednotlikeathoughtfulprofessorbutrathera12﹣year﹣oldboy.Iarrivedintheclassroomwithpapercardsdesignedintheshapeofmapleleaves.Ihadcutthemmyselfoutoforangeconstructionpaper.Isawninestudentsalongalongtable.IhandedoutthecardsandthestudentswrotedowntheirnamesandfastenedthemtotheirbreastpocketsasIrequired.Allrightthen''Isaid.Okayherewego.ThenIopenedmybriefcaseandrealizedthatIhadneverthoughtbeyondthismoment.Ihadbeenthinkingthatthestudentswouldbethefirsttotalkofferingtheirthoughtsandopinionsontheeventsoftheday.IhadimaginedthatIwouldsitattheedgeofthedeskoverlookingaforestofhands.Everystudentwouldshout.Calmdownyou'llallgetyourturn.Oneatatimeoneatatime!AterriblesilenceruledtheroomandseeingnootheropinionsIaskedthestudentstopullouttheirnotebooksandwriteabriefessayrelatedtothethemeofdeepdisappointment.1Theauthortookthejobtoteachwritingbecause.A.hewantedtoberespectedB.hehadwrittensomestoriesC.hewantedtopleasehisfatherD.hehaddreamedofbeingateacher2WhatcanwelearnabouttheauthorfromParagraph2?A.Hewouldbeaggressiveinhisfirstclass.B.Hewaswell﹣preparedforhisfirstclass.C.Hewaitedlongforthearrivalofhisfirstclass.D.Hegotnervousuponthearrivalofhisfirstclass.3Beforehestartedhisclasstheauthoraskedthestudentsto.A.cutsomecardsoutoftheconstructionpaperB.writedowntheirnamesonthepapercardsC.cutmapleleavesoutoftheconstructionpaperD.writedowntheirsuggestionsonthepapercards4Whatdidthestudentsdowhentheauthorstartedhisclass?A.Theybegantotalk.B.Theyraisedtheirhands.C.Theykeptsilent.D.Theyshoutedtobeheard.
30分Lastweekendourschoolorganizedsomevolunteerstohelp1thetrafficatthemaincrossroads.2Iwasoneofthem. Earlyinthe3fortyofusvolunteersgottogetherattheschoolgate.Beforeweleftourteachertoldussome4do'sanddon'tsfortrafficpolice.Thenwewere5hatsfluorescentvests荧光马甲andredflags.Itwasreally6tobefullyequippedforthesacred神圣的mission! Eventuallyourgroup7theappointed指定的crossroadsandoneofthe8policewomenwelcomeduswarmly.She9usintofourgroupseachofusstandingatonecornerofthecrossroads.AtfirstIfeltabit10whenthepedestrians行人lookedatuscuriously.ThenItookadeep11andtriedtogetovermyshyness.StepbystepIgotthe12ofbeingatrafficpoliceman.Whensomepassers﹣bywantedtorunthe13lightwesteppedforwardto14themwarningthemofthe15oftheircarelessbehavior.Whenolderpeoplewereaboutto16theroadwekindlyofferedtohelpthem.Withourassistancefar17peopleignoredthetrafficregulations.18havenowbecomeabeautifulpartofthesceneryinourcity. At11o'clockinthemorningourvoluntarywork19.Althoughweweretiredandhungrywefelthappyandfulfilled.Helpingothersreallydoesbringyou20. 1A.declare B.direct C.develop D.deliver 2A.Hopefully B.Luckily C.Unfortunately D.Naturally 3A.morning B.afternoon C.evening D.weekend 4A.additional B.interesting C.basic D.complex 5A.worn B.held C.handed D.given 6A.exciting B.astonishing C.frightening D.challenging 7A.slidto B.arrivedat C.pulledin D.movedon 8A.lonely B.elderly C.friendly D.silly 9A.separated B.threw C.divided D.drove 10A.embarrassed B.angry C.boring D.guilty 11A.sigh B.thought C.look D.breath 12A.hang B.rule C.trick D.method 13A.green B.red C.yellow D.orange 14A.help B.save C.stop D.catch 15A.mistakes B.dangers C.troubles D.pains 16A.take B.hit C.cross D.pass 17A.fewer B.more C.many D.less 18A.Schools B.Crossroads C.Passers﹣by D.Volunteers 19A.gaveup B.settleddown C.cametolife D.cametoanend 20A.kindness B.happiness C.tiredness D.forgiveness
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高一下学期数学
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