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Bob is excellent soccer player in our school team. A. a B. an C. the
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ThefamousBraziliansoccerteamhaseverhadmanyexcellen
--CanyoucometoplaysoccerwithmethisSundayBob?--.
Yes, I can.
That’s all right
Sure, I’d love to
No, I can’t
用括号内所给单词的适当形式填空1.Mybrotherisagreatcomputer________
TomwassoangrywithBobthathehit_____.A.BobintheheadB
补全对话根据对话内容从方框中选出最佳选项填入空白处有两项是多余选项Paul:HiLucy.Isthi
TomwassoangrywithBobthathehit_____.A.BobintheheadB
对话填词共10分Steve:Hello.CanI1s________toPippaplease?Vo
ThesoccerballisBob’s改为同义句Thesoccerball.
从Ⅱ栏中找出Ⅰ栏句子的适当答语Ⅰ1.Let’splaysoccer.2.Doyouhaveatenn
Boblikessoccerverymuchandhecanplaysoccervery. A.
任务型阅读I’mBoB.Thisismyroom.It’sabigroom.Thewallsareo
句型转换1.Ittakesabout10minutestogettoschool.对划线部分提问do
—WhatcanBobdo?—He_________.
can sing and dance
plays volleyball well
likes soccer very much
wants to be in our club
阅读理解MynameisDanandIhavetwobrothersBobandRay.Welike
附加题MynameisGuoKai.I’melevenyearsolD.Iamamiddlescho
Bobhastensoccerballshecan'tplaythem. A.and B.for
Bobcanplay___soccerbuthecan’tplay____drums.
the, the
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BobandMike______wellandtheybothlikesoccerverymuch.
come along
catch up
get up
get along
Bobwillplaysoccerwithhisfriendsthisafternoon.改为同义句
按要求完成下列句子每空一词1.IthinkthisisMary'sdictionary.对画线部分提
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ProductionName2.54mmdoublerowPinHeader FOBReferencePriceUS$0.5/pieceMin.orderquantity200pieces SupplyAbility20000piecesperday PortShanghai Company&ProductInformation l.ShanghaiZhouriElectronicsCo.Ltdwasestablishedin1993itisacompanyspecializinginproducingandsellingconnectorsterminalblocksandflatwire.Thecompanyhasitsownbasefromtradetoproduction.Afterovertwentyyearseffortsthecompanystartstakingshapeandtheproductionspecificationshavereachedmorethan12000kinds. In2008thecompanysuccessfullypassedISO90012008qualitymanagementsystemcertification.SomeproductsareULCECQCcertified.ItisagoverningmemberandvicepresidentofShanghaiElectronicChamberofCommerce.ItsownbrandsincludeKaisiMaKangSimaKSMandFeiErDing. 2.Productinformation8000productsofthecompanyarespotsupplyalsoundertakespecialgoodscustomizedplug﹣interminal. 3.DistributionandagencyTheproductsarewidelyappliedtocommunicationpowersecurityindustrialcontrolautomotiveinstrumentsandmetershomeappliancesandotherareas. 4.Thecompanyfollowsthephilosophyofgoodfaithandqualityandreturningthecustomersforthemaximumpreferentialpriceasconcept. Packaging&Shipping 1.Takestrongbags/boxes/cartonsforpackageinordertoreducethedamageduringtheshipments.TapeandreelpackingClamshellpackingPalletpackingetcareavailable. 2.DeliverymethodbyseabyairorexpresssuchasDHL/TNT/UPSetc… 3.Deliverytimenormally7﹣15daysformostcountriescouldbenegotiablewhenorderisurgent. 25.Thispassageis. A.anintroductionofdomesticdevices B.aproductinstructionforforeigners C.anadvertisementforoverseacustomers D.aguidelineforshoppingonline 26.Fromthepassagewecanincludethat. A.peoplecanordertheproductinanyquantity B.thisproductcanwithstandAC2000volts C.thebrandnameofthisproductisKaisiMa D.thisproductismadeofPBTmaterial 27.WhichistheobviousadvantageofZhouriCompany? A.Itisaninfluentialcompanyandhasrichproductspecifications. B.Ithasfastdeliveryandgoodafter﹣saleservice. C.Ithasadvancedtechnologyandlowpriceofproducts. D.Itsproductshavegooddesignandquality.
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短文.短文中共有10处错误每句中最多有两处.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∧并在此符号下面写出该加的词. 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. Latelythehazeweatherisbecomingincreasingseriousinmanycities.Lotsoffactoriesandcarsgaveoffterriblegaswhichresultsfromtheairpollutionandthehaze.Weallknowthatthehazeisbadforourhealthy.Evenworseitcanevenmakepeopledie. Nowadayspeoplehavecometorealizethegreatharmcausingbythehazeandtheimportanceofprotectingtheenvironment.Thegovernmentistakingmeasuretoreducetheairpollution.Manyfactorieshavebeenrequiredtoreducelesspollutantemission.Thegovernmentadvisespeopletakepublictransportationtowork.Othermeasuresincludedplantingmoretreesusingenvironment﹣friendlydevicesetc.hasbeentaken.
如图所示MN为平面镜PO为法线．则入射光线AO的反射光线是选填OB或者OC．
要测量小灯泡的额定功率实验室提供的器材有标有2.5V的小灯泡电池组电压为3V电压表电流表滑动变阻器开关导线若干．1小虎所接的实验电路如图甲电路中部分连接不合理但只需改动一根导线即可使电路连接正确．请你在应改动的导线上打×并用笔画线代替导线画出正确的接法．2改正电路后移动滑片使滑动变阻器接入电路的阻值最大．闭合开关此时电压表示数为1V电流表示数为0.2A则滑动变阻器的最大阻值为Ω．3连接好实验电路检查连接无误后闭合开关S却发现灯泡不发光电流表无示数电压表指针偏转明显可能发生的故障是．A．灯泡灯丝断了B．灯座接线短路C．蓄电池没有电了D．电流表接线柱短路．4在发现电路有故障时首要的规范操作应是．5故障排除后移动滑动变阻器的滑片使电压表的示数为2.5V此时电流表示数如图乙所示其值为A小灯泡的额定功率为W．6她还注意到这个实验记录也可以用来计算灯丝的电阻请完成表格中内容．这位同学有些纳闷儿导体的电阻不是与电压电流无关吗怎么三次计算的灯丝电阻却不一样呢请你对此作出解释．
DidiChuxingaride﹣sharingcompanywaspraisedbyFortunemagazinein2016.Accordingtothemagazineitischangingtheworldwithitsenvironmentallyfriendlysolutiontogettingaroundinmajorcities.Didiestimatedthatitscarpoolingserviceshelpedreducetotalcartripsinthecountrybylmillionadaywhichsaved500millionlitersofgasandcut13.5milliontonsofcarbonemissionsperday. Didiisjustoneexampleofthesharingeconomy.Thesharingeconomyisoneinwhichpeopleexchangegoodsandservicesusuallyusinganonlinemarketplace.OthersimilarcompaniesincludeAirbnbandCouch﹣surfingwhichallowpeopletorentouttheirhomesandsimilarride﹣sharingserviceslikeUberandLyft. Alloftheseservicesarepossiblebecausemanypeoplearerealizingthattheyhaveunderusedassets.Millionsofpeoplehavestartedrentingouttheirunderusedpersonalassetsonlinetoearnextramoney.Theyrenttheirapartmentswhiletheyareawayfortheweekendlendpeopletheircarsformoneyandevenselltheirsparetime. Thesharingeconomyhasnotonlysavedmoneyandresourcesbutalsocreatednewjobandincomeopportunitiesforpeople.Forexamplesomepeopledon'tnecessarilyspendmoneytohavecleartitletoavehiclebuttheywanttobeabletouseone.BysomeagencieslikeDiditheycangettheuseofacaronlypayingsmallrentandafixedcommissionfee. Technologyhashelpedtoreducecostsmakingsharingassetscheaperandeasierthaneverandthereforepossibleonamuchlargerscale.BeforetheInternetrentingaraincoatfromsomeoneelsewaspossiblebutitwasusuallymoretroublethanitwasworth.NowwebsiteslikeAirbnbRelayRidesandSnapgoodsmatchupownersandrenters.Onlinereviewsandratingsusuallypostedbybothpeoplewhoparticipateinatransactionbuilduptrust.Onlinepaymentsystemsdealwiththemoney. ThesharingeconomyisthelatestexampleoftheInternet'svaluetocustomers.Thismodelisnowbigenoughforregulatorsandcompaniestohavewokenuptoit.Thatisasignofitsgreatpotential. 32.TheexampleofDidiCompanyismainlytoshow. A.riding﹣sharingcompaniesarethemostpopular B.Didicompanyhasgainedlargeprofits C.sharingeconomyisanenvironmentallyfriendlysolution D.sharingeconomyhashadagreatinfluenceonsociety 33.Whatisthemeaningofthephrasehavecleartitletointhe4thparagraph? A.Drive.B.Register.C.Advertise.D.Possess. 34.Whatplay/playsakeyfactorinpromotingsharingeconomy? A.Technologydevelopment.B.Societyneeds.C.Privateassets.D.Economicdemand. 35.Whatistheauthor'sattitudetowardssharingeconomy? A.Doubtful.B.Oppositive.C.Supportive.D.Unconcerned.
为提高大都对磷元素的吸收能力研究人员利用杆菌转化法将水稻的耐低磷基因OsPTF转移到大豆植株中如图为重组Ti质粒上T﹣DNA的序列结构示意图．下列相关叙述不正确的是
踢出的足球在水平草地上继续滚动一段距离才停止下来请作出向右滚动的足球所受各力的示意图．
TheSpotlightinRio Phelpsputsspotlightoncupping拔火罐 OlympicgoldmedalistMichaelPhelpsfedAmericanswimmerst08gofdmedalinthe4xiOO﹣meterrelaybut.whatgrabbedmediaattentionandledtostoriesandphotosaroundtheglobewerethepurpleandredcirclesonhisback MichaelPhelpsoftheUSAisseenwithredcuppingmarksonh/sshoulderashecompetesduringthe2016RioOlympicsmen's200mbutterflyinRiodeJaneiroBrazilAug82016 ChineseswimmerFuYuanhuigoesviral Chain'swomen'sswimmerFuYuanhuihascreatedasensationonlinenotjustbywinningthebronzemedalinthe1OOmbackstrokecompetitionbutalsobyherfacialexpressionsduringthepostsemi﹣finalinterviewwithChinaCentralTelevisionCCTVonMonday WhenaskedwhethersheheldbackforthefinalFurepliedNoIutilizedmy'prehistoricalpower'.Whatshemeantwasthatshehadsparednoeffortsinthesemi﹣final.Sincethen. so﹣calledprehistoricalpowerhasgoneviralandbecomeanewInternetmeme BritainwinsfirstOlympicdivinggoldinmen'ssynchronized3mspringboard男子双人3米跳板 Britain'sJackLaugherandChrisMearsendedChina'sgoldmedalmonopoly垄断overdivingeventsattheR/oOlympicsbywinningthemen'ssynchronized3mspringboardfinalOnWednesdaythecountry'sfirst﹣everOlympicgoldmedalindivingLaugherandMearsfinishedwithasix﹣roundtotalof454.32pointsjust4.11pointsaheadofsilvermedallistsMikeHixonandSamDormanoftheUSAattheMariaLenkAquaticsCenter. China'sCaoYuanandQinKaitookthebronzewith443.70points 21.WhatattractedmediaattentionwithPhelps'winningthegoldmedal A.Hisgreatleadership. B.Hisscarsonhisback. C.Thecuppingmarksonhisback. D.Hisachievementshemadeinthemen's200rnbutterfly. 22.WhichofthefollowingisNOTthereasonwhyFuYuanhuibecamethespotlight? A.Herdevotionanddeterminationtoswimming. B.Herachievementinthe1OOmbackstrokecompetition. C.Herfacialexpressionduringthepost﹣semifinalinterview. DHerhumourousreplytothereporter﹣socalledprehistoricalpower. 23.Whatcanwelearnfromthethirdnews? A.Chinadidn'ttwinanygoldmedalsindivingeventsattheRioOlympics. B.BritainbecamethegoldmedalmonopolistofdivingeventsattheRioOlympics. C.MikeHixonandSamDormanoftheUSAtooksilverwith447.81points. D.BritainhadneverwontheOlympicdivinggoldmedalbeforetheRioOlympics.
AtatalktosomebusinessmenearliertodayonefellowaskedmeWouldyougivemoneytoahomelesspersonevenwhenyouknowhe'sgoingtouseittobuyalcohol?IrepliedIfallwasgivingwasmoneyit'llbeonething.ButformewheneverIdogivemoneythat'sjustthewrapping包装纸.Therealgiftishiddeninside﹣it'slove.AndIhaven'teverfoundanyreasontolimitgiftsoflove. BytheendofthenightIdecidedtogetsomepizza.Infrontofmeinlinewashomeless﹣lookingman.Hewascountingthefewdollarsbillsinhishandoverandoveragainuntilitwashisturntoorder.JustthenhetoldtheyoungwomanbehindthecounterI'IIhavethefullcheesepizza.Full?shecountered.It'sreallybig'sheaddedalthoughwhatshereallymeanttosayisthatit'llbetooexpensiveforhim.Yeahthefull$18.65shesubmitted.Thebillshewascountingweren'tgoingtomakeit.Iwasn'tintendingtogetthewholepizzaforhim.ButthinkingbacktomyconversationwiththebusinessmanIrealizedthatmoneywasreallyjustthewrapping. Imademymove.CanyouchargethatpizzawithmyorderIsaidtothecashier.ReallyT'thehomeless﹣lookingmansaid.Really?theyoungwomanbehindthecounterrepeated.Yesreally.ThatdisheveledmanandIhadasweetsilentmoment.TohissilentquestionofwhyIwasdoingitIaddedJustpayitforwardforsomeoneelse.AndhesaidWellyouknowwhat?Iwasactuallytreatingthesefivehomelessguysoutthere.HewasactuallypayingitforwardinthefirstplaceWhatanunexpectedfortunetogetachancetobeapartofaman'sactofkindness. 1Whatcanwelearnabouttheauthorfromthefirstparagraph? A.Heiswiseandcaring. B.Heisfriendlyandselfish. C.Heisselflessandstraightforward. D.Heiseasy﹣goingandstupid. 2Whatmadetheauthordecidetohelptheman? A.Therequestfromthehomeless﹣lookingman. B.Hissympathyforthehomeless﹣lookingman. C.Hisrecallingthetalkwiththebusinessmanearlierthatday. D.Theurgencyfromtheyoungwomanbehindthecounter. 3Whydidthehomeless﹣lookingmanwanttobuythewholepizza? A.Becausehewastoohungry. B.Becausehewantedtopayitforward. C.Becausehewantedtotreathisownfivechildren. D.Becausehewantedtohelpsomehomelesspeople. 4Whatisthebesttitleforthepassage? A.Payingitforward B.Helpingahomelessman C.Atalkwithabusinessman D.Moneywasjustthewrapping
花样滑冰运动员在冰面上进行比赛的过程中身体正在发生的反应有
图中的图Ⅰ为植物组织培养流程图图Ⅱ为植物组织培养过程的部分示意图请回答 1从理论上讲植物细胞有形成再生植株的可能性这是的表现． 2图Ⅰa代表过程．图Ⅰ中的②和图ⅡA中培养基上的培养物都是由无特定形态与功能的细胞组成称为． 3图Ⅱ中D培养物已经形成幼体．请根据植物组织培养过程对图Ⅱ重新排序． 4图Ⅱ中B中为胡萝卜根尖细胞则培养成的新植株的叶片的颜色是这说明根尖细胞． 5某高二生物兴趣小组用芦荟的新鲜茎的一部分作为材料进行组织培养愈伤组织能正常形成且以后继续长大正常根和芽却迟迟不能形成你认为导致该情况出现的最可能的原因是． A．葡萄糖氨基酸等有机营养供应不足 B．培养环境光照温度pH或氧气浓度不适宜 C．生长素和细胞分裂素比例不协调 D．无菌条件没有控制好
下列关于人体体液的叙述正确的是
AfteryearsofstruggleJakeOlsonhasachievedtheimpossibledreamdespitebeingcompletely41hejoinedhisfavouritecollegefootballteam﹣USCTrojanplayingasalongsnapperandparticipatinginthegamebasedonfeel42sight. Atonlyeightmonthsoldhewas43withararecanceroftheeyesohislefteyehadtoberemovedfollowedby44topreventthecancerfromspreading.Sadlyitkeptcomingback.Atage12Jakewouldhaveto45hisrighteyeaswell. Realizinghewasgoingtolivealifewithout46hedidn'tfeelcompletelyhopeless.Asadie﹣hardTrojanfanoneofJake'slast47wastowitnessapracticesessionbeforethe48. Jake'spassionforthesportdidnot49duetoblindness﹣whenJakegottohighschoolhethoughtofwayshecouldbe50withhisownschool'steam.Atfirsthedidn'tthinkhecouldbeofanyreal51totheteambutthenheheardoflongsnappingandstartedtopractice.Hewas52hardformorethanayear. Jake'sloveforanddedicationtofootball53. WhenIshowedwhatIcoulddothey54thiskidcouldactuallybeavaluableassettotheteam.55hewasadmittedtohisschoolteamandbecamethestarterwithhisteammates56andhelpinghim. Suddenlyitdidn'tseemtoo57todothesameincollege.AndTrojancoachSteveSarkisian58thatJakeindeedcouldmakethecut.AndinSeptemberhislifelong59wascomingtrue. Goingthroughchallengesinlifeitreallydoesmakeyou60headded.Life'sunfair.Butit'suptoyouhowfaryouwanttotakeyourself… 41.A.blind B.healthy C.sad D.temporary 42.A.owingto B.aswellas C.ratherthan D.regardlessof 43.A.imposed B.concerned C.confronted D.diagnosed 44.A.examination B.observation C.treatment D.restraint 45.A.insult B.preserve C.lose D.treasure 46.A.dignity B.honor C.dream D.sight 47.A.attempts B.opportunities C.temptations D.wishes 48.A.surgery B.conduction C.assessment D.correction 49.A.strengthen B.weaken C.avoid D.inspire 50.A.satisfied B.occupied C.addicted D.involved 51.A.interest B.quality C.value D.sake 52.A.undertaken B.trained C.desired D.exhausted 53.A.tookup B.ranout C.paidoff D.answeredfor 54.A.appealed B.realized C.sympathized D.pretended 55.A.However B.Gradually C.Shortly D.Eventually 56.A.replacing B.guiding C.persuading D.protecting 57.A.successful B.absolute C.impossible D.accidental 58.A.agreed B.opposed C.criticized D.reminded 59.A.appreciation B.fantasy C.envy D.dream 60.A.luckier B.brighter C.stronger D.crazier
EveryonecomplainsEvenifyouarguethatyouarethehappiestpersonintheworldyoustillcomplainsometimes.Sometimesyoucomplainwithoutevenrealizingilbutrarelyisiteverhelpful.1Herearesometipstostopcomplauungandgiveupthenegativethoughts 2 Whenyoufindyourselfthinkingorsayinganegativecommentaboutsomethingorsomeonestopandforceyourselftosaysomethingpositiveinstead.SeekthehelpofacheerfulfriendtochangeyouwhenyoucomplainandhelpyoutoseethepositiveinthesituationMakealistofthingswearegratefulfor. Weoftencomplainaboutthethingswedon'thavewithoutnoticingthosethingswealreadyhave.Begratefulforwhatwehaveinourlifebecauseweareluckysimplyforbeingourselves.3 Learntoadapttothechanges. Therearemanythingswecan'tchange.4AlwaysfindthepositivesideofeachsituationregardlessofhoweverdifficultthesituationisWithparents'andfriends'supportwecansurviveanylifechanges Allowyourselftovent发泄yourfeelingseveryonceinawhile. ConstantlyignorednegativethoughtscouldaddupIfyouarereallygoingthrougharoughtimedon'tbeafraidtoshareyourfeelingswithaclosefriendorfamilymemberorseeatherapist. Findwhatmakesyouhappy. 5Maybeitistimetomaketheharddecisiontomoveontoanotherjoborcareer. Uncoverwhatyourbiggestcomplaintsareaboutandseeifyoucanchangethesituationmakeyouhappy.Choosehappinessfocusonthepositiveandbekindalways! A.Changethewayyouthink BMakepositivepeoplefriends CThebestandonlythingwecandoistoacceptthem DAreyouconstantlycomplainingaboutyourpresentjob? ESometimesthislistcanbeeasyfullofhobbiesyouenjoy F.Sohowcanyoumanagetoforceyourselvestoendcomplaining? GSetdownthingswearethankfulforandwe'llseethatwedon'thaveanyreasontocomplain.
科学家在研究线粒体膜的功能时先去除外膜再用超声波破坏线粒体内膜破裂的内膜自动闭合成小泡然后用尿素处理这些小泡实验流程如下图所示．请据图回答 1“内共生学说”认为线粒体是好氧细菌被原始真核生物吞噬后经长期的共生而形成的依据此学说可推测线粒体的外膜与原始真核生物的细胞结构在化学组成上相似主要成分都是． 2为研究线粒体内膜的具体功能科研人员利用的原理使线粒体的外膜先吸水涨破经实验技术后将外膜与线粒体内膜包裹的基质分开． 3研究人员发现线粒体内膜上的F0﹣F1颗粒物既是一种也是ATP合成酶其中是疏水的．为了研究F0﹣F1颗粒物的结构与合成ATP的关系研究人员用尿素破坏内膜小泡将F1颗粒与小泡分开检测处理前后ATP的合成．若处理之前在跨膜H+浓度梯度条件下含F0﹣F1颗粒内膜小泡能合成ATP处理后说明F1颗粒的功能与催化ATP的合成有关． 4线粒体基质中可能含有的化学成分有填字母． a．水b．丙酮酸c．葡萄糖d．ATPε．核苷酸f．氨基酸
如图甲用弹簧测力计水平拉动重10N的物体在水平桌面上运动图乙是该物体先后两次在同一水平面上运动时连续拍摄的“频闪”照片每次曝光时间为0.02s．木块从A点运动到B点的距离是cm第一次运动所受拉力的大小第二次运动所受的拉力选填“大于”“小于”或“等于”下同．
IcanstillrememberthefirsttimeIplacedmynewbornbabysonintomyGrandmother‘sarmsNanabythattimewas77yearsoldandneededa41togetaroundherhome.Yetthesecond1cameinthedoorshereachedher42outtohugmeandkissedme.Whenshehad43intoherchairIplacedmysonintoherarmsandwatchedhershakehim44whilehereyes45upwithjoy. BythatlimeNanahadalready46somuchinherlife.Asalittlegirlshehad47anattack.Shehadworkedhard48fourhugevegetablegardenstohelpfeedthebigfamily.Thenshe'dhelpedtoraisemeandmybrothers.WhenIwas11yearsoldshe'dwatched49asafiredestroyedherhome.She'dalsosurvivedbrainsurgeryto50atumor肿瘤fromherhead. AsIwatchedherholdmysoninherarms151howmuchlongershewouldbewithus.52Nanalivedtobe92.IguessGodknewshestillhadmorebabiestoholdmore53andhugstogiveandmoreloveto54 Nowmynewborn55is28yearsoldandIhave56hairandwrinkles.StillIdon'tfeel57LikeNanaIknowthatIhavemorekisses58andloveinsideofmetoshare.Lifemayhavepainstrugglesandsorrows59Godlovesusandhelpsusthroughthemall.Lifemaybe60butthereisalwaystimeforloveforjoyandforhugs. 41.A.car B.wheelchair C.bed D.hat 42.A.arms B.head C.legs D.feet 43.A.run B.settled Cchanged D.thrown 44.A.violently B.already Cgently Dagain 45.A.made Bclosed Cset D.lit 46.A.goneup B.puton Cgonethrough D.putdown 47.A.survived Bconsidered C.joined D.seen 48.A.destroying B.growing Cwatering D.treating 49.A.onduty B.inpublic Conpurpose Dintears 50.A.remove B.recover Cprotect D.hide 51.A.knew B.liked Cwondered D.hoped 52.A.Unluckily B.Merely CFrequently D.Thankfully 53.A.money B.kisses C.gifts D.work 54.A.separate B.cancel Cshare D.celebrate 55.A.baby B.plant C.animal D.daughter 56.A.black Bred C.grey D.green 57.A.young B.energetic Clight D.old 58.A.injuries B.experiences Csadness D.hugs 59.A.so B.but Cand D.when 60.A.short Blong Chappy D.limitless
下列有关生物的遗传变异与进化的叙述正确的是
HPV病毒是人类乳头瘤病毒的缩写长期感染可能与女性宫颈癌有关宫颈癌是女性第二大恶性肿瘤美国食品药品监督管理局FDA2014年12月10日在其官网宣布默沙东研发的GARDASIL9佳达修九价重组人乳头状瘤病毒疫苗获批． 1为初步判断细胞是否癌变可用显微镜观察．恶性肿瘤因其因此易分散转移． 2HPV疫苗作为进入机体首先被识别引发体内一系列免疫反应．打过疫苗的人再次感染HPV时可由产生浆细胞进而产生抗体． 3胞外蛋白TGF﹣B1与靶细胞膜上结合激活胞内信号分子生成复合物转移到细胞核内诱导靶基因的表达阻止细胞异常增殖抑制恶性肿瘤的发生．从功能上看复合物诱导的靶基因属于基因． 4在培养癌细胞的实验中加入青蒿琥酯随着其浓度升高凋亡蛋白Q表达量增多癌细胞凋亡率升高为检测青蒿琥酯对凋亡蛋白Q表达的影响须设置的对照实验．若用凋亡蛋白Q饲喂患癌鼠填“能确定”或“不能确定”该蛋白能否在动物体内诱导癌细胞凋亡．
如图甲所示小明家新装了一台智能电热马桶盖他查阅使用说明书发现便座加热电路有高中低三档并可手动调节其额定电压为220V低温档中温档的额定功率为22W和44W．利用所学的电学知识他设计了一个等效电路图如图21乙所示用两个定值电阻R1和R2表示两电热丝开关S2可分别接ab或c触点电路接入家庭电路中时均能正常工作． 1当断开S1将S2接c点时定值电阻R1和R2联求此档位的加热电流是多少安 2用中温档加热10min求消耗电能多少焦耳 3求高温档加热的额定功率是多少瓦
Aquarteroftoday'sUKchildrenarelivinginfamilieswhichcausemorethanonerisktotheireducationaldevelopmentastudysays. InstituteofEducationresearchersanalyzed10riskfactorsaffectingmorethan18000families.Risksincludedfinancialstressteenageparenthooddepressionlowskillsandalcoholabuse.Previousresearchsuggestsfamilieswithmultipleriskfactorsarethemostdamaging.Accordingtotheresearchjustoverfourintenpeopleexperiencednoriskfactorsintheirearlychildhoodwhileathirdfacedonlyone.Itwouldmean192.000UKchildrenborn10yearsagohavebeengrowingupinfamilieswithmultipleriskstotheirdevelopment. Thepaper'sauthorsfoundthatthosewhohadgrownupwithtwoormoreriskfactorshadpoorerbehavioraldevelopmentscoresatagesthreeandfive.Theyalsodidworseinstandardvocabularytestsattheseages.ThereportpublishedbytheCentreforLongitudinalStudiessaid.Childrenlivinginfamilieswithbothmultiplerisksandlowincomefacedtheworstacrossmostdevelopmentaloutcomes. Thesechildrenachievedthelowestchangeinvocabularytestscoresbetweenagesthreeandfive.ProfessorDexadded.Themostreassuringthingisthatifyoucomeintocontactwithjustoneoftheseriskfactorsthereisafairlymodesteffectonchildren.Shesuggestedthathealthvisitorscouldbeawareoffamilieswherethereweretwoormoreoftheseindicators.andofferhelp. ThegovernmenthaspledgedtoturnaroundthelivesofEngland's120.000mosttroubledfamiliesby2015.Toqualifyforhelpthefamiliesneedtomeetfiveoutofsevencriteriaincludingtruanting旷课的childrenparentswithaddictionandanti﹣socialbehavior. 33.Accordingtotheresearchwhatfamiliesarethemostdamagingtochildren'seducationaldevelopment? A.Familieswithnoriskfactors. B.Familieswithtwoormorechildren. CFamilieswithtwoormoreriskfactors. DFamilieswiththeonlyfinancialstress. 34.Whatcanwelearnaboutthechildrengrowingupwithmultipleriskfactors? A.Theydidn'tcareaboutdevelopmentaloutcomes. B.Theyhadpoorerbehavioraldevelopmentinhighschool. C.Theytendedtobehavebetterindealingwithdifferentrisks. D.Theytendedtoperformworseinvocabularytestsintheirearlychildhood. 35.Theunderlinedwordpledgedinthelastparagraphcanbereplacedby• A.refused B.promised C.hesitated D.failed.
In2014mybestfriend'smotherdiedofcancer.ItwasatragedybutasusualAlicemymotherusedherpowerofhealingandgothisfamilybackontheirfeet.IfyouaskedmyfriendsaboutmymothertheywouldsayThatwomanhasaheartofgold.Iagreeone﹣hundredpercent. IthinkthereasonwhysheissuchawonderfulpersonisthattheHolySpiritliveswithinher.SheisveryholyandhaspersuadedmetogotochurchwithhereverySunday. Aboutsixyearsagomymomdecidedtopursueherlifelonggoalofbecomingateacher.Sheknewitwouldbehardworkraisingthreekidsdoinghouseworkandstudyingatthesametime.Howevershebelieveditwouldpayoff.Whatmymotherdidn'trealizewasthatnotallthingspayoffinthisunfairworld.Afterfourhardyearsofschoolshegraduatedonawarmspringday.Itwasunbelievable.MyauntdroveupfromVirginiatocelebratethisfantasticday.ItwasthefirsttimeIhadevercriedfrombeinghappy. It'sstrangehowfastalifecanchange.Twomonthslatertheunpredictablehappened.Mymotherwasdiagnosedwithmultiplesclerosis多发性硬化症.Icouldnotbelievethiscouldhappenafterallthegoodshehaddoneforpeople.Iwasveryconfusedandcriedeveryday.MyfaithinGodjustdisappearedandsodidmymom'sdreamofbecomingateacher. ThenIdecidedImustmoveonwithmylifeandacceptthefactthatshemightnevergetbetter.SincemydecisionIhavebecomemorematureresponsibleandactiveinschoolandwork.Ihavefoundawonderfulgirlfriendwithwhom1plantospendtherestofmylife.ThroughtheyearsIhavealwaysbeenabletochangenegativesituationsintopositiveones.I'mhappywithmylifenow. 25.WhichofthefollowingcanbestdescribeAlice? A.Honest. B.Helpful. C.Greedy. D.Unconcerned. 26.WhatelsedidAlicehavetodowhenstudying? A.Driveacarandgotochurch. B.Teachstudentsandraisekids. C.Dohouseworkandteachatschool. D.lookafterchildrenandkeephouse. 27.Accordingtothetexttheauthor'smother. A.recoveredfromillness B.nolongerhadfaithinGod C.didn'trealizeherdreamasateacher D.changednegativesituationsintopositiveonesunwillingly 28.Whatmaybethebesttitleforthetext? A.MotherGaveMeLifeExperience B.FightingagainstKindsofDiseases C.BeliefinGodBroughtMeGoodLuck D..HowtoBecomeaResponsibleandActiveMan.
下列各细胞结构与其功能对应不正确的是
“结构与功能相适应是生物学的基本观点”下列有关细胞结构与功能的相关性叙述有误的是
WheneverIusepublictransportandiflget3placetositlofferthatseattosomeonewho61needitmorethanIespeciallytotheelderlytowomenorsomeone62desperate lookingfor8seat.IhavemadehabitofsayingThankyoutothose63aresacrificingtheir placesforthefellowpassengersonpublictransport. SomanytimesI64experiencethatshowingkindnessinpublicplacesspreadslikeWildfire.Ihaveseenthatpeoplearoundusget65inspireafterseeingourkindnessbehaviorandtheythemselvesalsostartbehavingsimilarly66exampleshowingkindnessinoffingtheirplacesandadjusting67theytoothers.Observingandexperiencingsuchthingsgivehugejoyand68please Ikeepthinkingthatgoodnesswillspreadaroundtheworldthroughtheseways.Everyhumanbeinghas69puresoulhavingallgoodnessbuttheonlyneedis70comeoutopento Behaveinawaythatisalreadysonaturalwithinus.
SNP是基因组水平上由单个核苷酸的变异引起的DNA序列多态性．科研人员利用SNP对拟南芥抗盐突变体的抗盐基因进行定位． 1SNP在拟南芥基因组中广泛存在在不同DNA分子及同一DNA分子的不同部位存在大量SNP位点某些SNP在个体间差异稳定可作为DNA上特定位置的遗传． 2研究者用化学诱变剂处理野生型拟南芥处理后的拟南芥自交得到的子代中抗盐不抗盐＝13据此判断抗盐为性状． 3为进一步得到除抗盐基因突变外其他基因均与野生型相同的抗盐突变体记为m可采用下面的杂交育种方案． 步骤一抗盐突变体与野生型杂交 步骤二 步骤三 步骤四多次重复步骤一～步骤三． 4为确定抗盐基因在Ⅱ号还是Ⅲ号染色体上研究者用抗盐突变体m与另一野生型植株B杂交用分别位于两对染色体上的SNP1和SNP2见图进行基因定位． ①将m和B进行杂交得到的F1植株自交．将F1植株所结种子播种于的选择培养基上培养得到F2抗盐植株． ②分别检测F2抗盐植株个体的SNP1和SNP2若全部个体的SNP1检测结果为SNP2检测结果SNP2m和SNP2B的比例约为则抗盐基因在Ⅱ号染色体上且与SNP1m不发生交叉互换． 5研究者通过上述方法确定抗盐基因在某染色体上为进一步精确定位基因位置选择该染色体上8个不同的SNP得到与抗盐基因发生交叉互换的概率如表．据表判断抗盐基因位于SNP位置附近作出判断所依据的原理是． 6结合本研究请例举SNP在医学领域可能的应用前景．
小明同学在“用天平和量筒测某种金属的密度”实验中选用天平量筒金属块细线烧杯和水进行了如下的实验操作 A．把天平放在水平桌面上 B．把游码放在标尺的零刻度线处调节横梁上的螺母使横梁平衡 C．将金属块用细线系好后浸没在量筒内的水中记录此时液面示数 D．将金属块放在左盘中在右盘中增减砝码并移动游码直至横梁平衡 E．在量筒中倒入适量的水记录此时液面的示数 1为了更准确地测出金属的密度你认为以上操作的合理顺序是填序号 2用调节好的天平称金属块的质量当加入一定量的砝码后发现天平的指针偏向分度标尺的左侧再加入最小的砝码指针偏向分度盘的右侧这时应该直至天平平衡．天平平衡时放在右盘中的砝码和游码的位置如图1所示则金属块的质量为g 3将金属块用细线系好放入已盛有50mL水的量筒中量筒中的水面升高到如图2所示位置金属块的体积是cm3金属块的密度为g/cm3结果保留一位小数 4另一个小组实验时找不到细线用的是体积不能忽略的绳那么这个小组测出金属块的密度将会选填“偏大”“偏小”或“不受影响”原因是．
假定英语课上英语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处语言错误每句中至多有两处.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限一词. 2.只允许修改10处多者从第11处起不计分. DearPeter OneofmybestfriendsLiFenghasjustwinascholarshiptostudyforoneyearinCanada.Ithappenstheschoolwhichhewillgotoisyours.LiFengismygoodfriendsasImentioned.Heissuchkindthateveryoneinourclasslikeshimverymuch.Heisoutgoingbuthasmanyhobbies.ButthisisforthefirsttimeforhimtoliveandstudyingabroadHewillneedthelongtimetoadaptonthenewlifestyle.1hopethatyoucangetalongwellwithher. Ibelievehewillnotfeellonelybecauseofyourcareandhelp. Yours LiHua.
玉米是雌雄同株异花植物其种子“甜”和“非甜”是一对相对性状受一对等位基因控制．将甜玉米和非甜玉米实行间行种植收获时发现甜玉米果穗上结有非甜玉米的种子但在非甜玉米的果穗上找不到甜玉米的种子．下列判断正确的是
假设你是高三学生李华进入高三后学习很紧张压力很大学习效果不好尤其是英语最差.请你用英文给你在美国上大学的笔友John写信介绍现在学习中的困难和压力并寻求学习英语的建议. 注意1.词数100左右 2.可以适当增加细节以使行文连贯 3.信的开头和结尾己为你写好不计入总词数. DearJohn Howareyougettingonthesedays? Lookingforwardtoyourreply. Yourssincerely LiHua.
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