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若一个底面是正三角形的三棱柱的正视图如图所示，其侧面积等于（ ）
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高一上学期数学《》真题及答案
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若一个底面是正三角形的三棱柱的主视图如图所示则其侧面积等于
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若一个底面是正三角形的三棱柱的正视图如图所示其侧面积等于
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若一个底面是正三角形的三棱柱的正视图如图所示则其表面积等于__________.
若一个底面是正三角形的三棱柱的正视图如图所示其顶点都在一个球面上则该球的表面积为
若一个底面是正三角形的三棱柱的正视图如图所示则其侧面积等于_________.
若一个底面是正三角形的三棱柱的正视图如图所示其顶点都在一个球面上则该球的表面积为
若一个底面是正三角形的三棱柱的正视图如图所示则其表面积等于
若一个底面是正三角形的三棱柱的正视图如图所示则其表面积等于
一个几何体的三视图如图所示若它的正视图和侧视图都是矩形俯视图是一个正三角形则这个几何体的表面积是体积
若一个底面是正三角形的三棱柱的正视图如图所示其顶点都在一个球面上则该球的表面积为A.B.C.D.
若一个底面是正三角形的三棱柱的正视图如图所示则其侧面积等于
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若一个底面是正三角形的三棱柱的正视图如图所示其顶点都在一个球面上则该球的表面积为
若一个底面是正三角形的三棱柱的正视图如图所示则其侧面积等于
2
6
若一个底面是正三角形的三棱柱的正视图如图所示则其侧面积等于
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一个底面是正三角形的三棱柱的正视图如图所示则其体积等于
6
2
若一个底面是正三角形的三棱柱的正主视图如图所示则其侧面积等于
3
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若一个底面是正三角形的三棱柱的正视图如图所示则其侧面积等于.
一个几何体的三视图如图所示其中正视图与侧视图都是边长为2的正三角形则这个几何体的侧面积为______
已知三棱锥的底面是边长为1的正三角形其正视图与俯视图如图所示则其侧视图的面积为.
若一个底面是正三角形的三棱柱的正视图如图所示其顶点都在一个球面上则该球的表面积为
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10分 HelpingStudentsFindTheirWritingVoices Oneofthemostfrustratingthingsforwritingteachersisreadingpapersthatsimplylackstyle.Whenalloftheresearchhasbeencompletedandallofthesentencesarestructuredwellbutthepaperstilllackssomepizzazz活力itcanbeboringtograde.Ifyouaresearchingforwaystohelpyourstudentsfindtheirvoiceswhynottrymakingstudentsthemselvesthetopicofthewriting?1Whoareyou? OneofthemostdifficultquestionsforstudentstoanswerisWhoareyou?2Indoingthisthroughwritingstudentswillstarttoseetheirpersonalitiesdifferentlyandhopefullybeabletoaddafeaturetotheirwriting. Dearxxx 3Encouragethemtowritetoafamouspersonthey'vealwaysadmiredandthentheonetheyabsolutelyhate.Explorehowtheirlanguagechangesbetweenthetwoletters.Whenstudentsknowtheiraudiencesitismucheasierforthemtoaddthekindofpersonalitytheiraudiencewantstosee. 4Whenstudentswriteaboutwhatmattersmosttothemtheywilloftengiveyouthebestwritingyou'veeverseen.You'llgetthosewhenyouaskquestionsthathithome.Whenstudentshavesomethingtosayaboutagiventopicitcanbeeasierforthemtogettheirideasdownandthenworkontheirwritingstyle. Frommindtopaper. Themostvaluablelessonstudentscanlearnistowritefirstandeditlater.Havestudentswriteforfiveminutesabouttheirtopics.Iftheycangettheirideasdownonpaperthat's90%ofthebattle.5Thiscanhelpthemrealizethatoncetheyhavetheideasdowntherestisjustfinetuning微调.Oncetheyhavethisskillmasteredit'seasyforthemtostartaddingtheirownpersonalvoicestotheirpapers. A.Whatmatterstoyou? B.Whatstyleistaughtinclass? C.Whentheywriteaboutthemselvesstudents'voicesoftenshinethrough. D.Writinglettersisagreatwayforstudentstoexploretheirwritingstyle. E.Haveyourstudentsexplorewhotheyareandwhatmakesthemunique. F.Voiceisthatmagicalqualitywhichisabletomakeacreativewritingideasing! G.Afterthathavethemedittheseideasintoareallystrongintroductoryparagraph. 1. 2. 3. 4. 5.
30分OElizabethClaydecidedtogohomeandspendtheholidaywithherparents.Thenextdayshedroveheroldcarhomealongtheroad.1shefoundshegotaflat.The22﹣year﹣oldstudent2tostophercarbythesideoftheroadinthewinternightandopenedthetrunk.No3tire. Atthistimeacar4.PaulandDianetoldClayto5themtoaservicestationneartheir6.Theyarrivedtoseethatithadnosuitabletiresto7withhercar.FollowushomesaidPaul. Thecouplecalledaroundtofindatire.No8.Theydecidedtoletherusetheirowncar.HerePaulsaidhandingClaya9ofkeysTakeourcar.We10beusingitovertheholiday. Claywas11.ButI'mgoingallthewaytoSouthCarolinaandI'llbegonefortwoweeksshe12them. WeknowPaulsaid.We'llbe13whenyougetback.Here'sournumberifyouneedto14us. UnabletobelievehereyesClaywatchedasthe15putherluggageintotheircarandthen16heroff.Twoweekslatershe17tofindheroldcarcleanedinsideandoutwiththreenewtiresandtheradio18. Thankyousomuchshesaid.HowmuchdoI19you?OhnoPaulsaidwedon'twantanymoney.It'sour20.Clayrealizedthatwhileitmighthavebeentheirpleasureitwasnowherdutytopassontheirdoontoothersspirit. 1.A.Suddenly B.Finally C.Immediately D.Fortunately 2.A.afforded B.wanted C.managed D.allowed 3.A.spare B.free C.full D.empty 4.A.passed B.stopped C.paused D.started 5.A.help B.push C.take D.follow 6.A.garage B.house C.shop D.hotel 7.A.agree B.match C.go D.deal 8.A.way B.message C.success D.luck 9.A.number B.set C.pair D.chain 10.A.can't B.shouldn't C.mustn't D.won't 11.A.satisfied B.worried C.astonished D.disturbed 12.A.persuaded B.advised C.reminded D.promised 13.A.happy B.here C.away D.busy 14.A.getintouchwith B.keepintouchwith C.beintouchwith D.putintouchwith 15.A.repairmen B.cleaners C.friends D.couple 16.A.sent B.shook C.watched D.drove 17.A.shocked B.happened C.returned D.came 18.A.loaded B.fixed C.tied D.rebuilt 19.A.owe B.lend C.give D.offer 20.A.wish B.job C.duty D.pleasure
分解因式3a3﹣6a2+3a＝．
在通常条件下下列各组物质的性质排列正确的是
25分假如你是李华最近你在浏览一个新西兰中学网站时看到一位名叫Tom的中学生的留言他计划在暑假期间到中国的北京旅游希望能有一名中国留学生做他的导游.你对此很感兴趣请根据以下要点提示写一封e﹣mail给他介绍你的相关情况. 主要内容包括: 1.希望做他的导游; 2.打算如何给他做导游; 3.期盼他的回复. 注意: 1.词数100左右; 2.可适当增加情节以使行文连贯; 3.信的开头已为你写好. DearTom RecentlywhilebrowsingaseniorhighschoolwebsiteofNewZealandIsawthemessageyoupostedonit. Yourssincerely LiHua.
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30分某中学生英文报开辟了Editor'sCoffeeBreak专栏为的是方便读者们能与主编交流英语学习的方方面面.假设你是该栏目的编辑李华你收到一封署名为Mr.Confused的来信.信中该同学对将来英语退出高考表示担忧对将来自己是否应该努力学习英语感到迷茫.请用英文给该同学写一封回信. 内容要点如下: 1告诉对方英语还是很重要的; 2谈谈你对英语退出高考的看法; 3鼓励该同学继续努力学习英语. 注意:1词数120左右; 2信中不能出现与考生本人相关的信息; 参考词汇:退出高考toberemovedfromCollegeEntranceExamination DearMr.Confused Thankyouforwritingtome.Idounderstandyourconfusion. Yours LiHua
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10分英语课上老师要求同桌同学相互修改作文.假设以下书信为你同桌所写请你对其进行修改.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:在缺词处加一个漏词符号∧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.LastweekIwenttovisittomyformerneighborMr.Yang.HeandIusedtolivingnexttoeachotherformanyyears.Abouthalfayearagoanordercamewhichtheoldbuildingalongwithmanyothersimilaronesweregoingtobepulleddowntomakeroomforamainstreet.SoIhadtomoveapart.Mr.Yangnowlivesinthesuburbnearabeautifulpark.Hisnewapartmentismuchbigthanbefore.Theonlyproblemisthatittookquitealongtimetogettothedowntownarea.ThereforeMr.Yangdoesn'tseemtoworryaboutthelongdistance.Hesaysthatnewsubwaylineistobebuiltinafewyearandheissurelifewillbebetterinthefuture.
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某中学举行钢笔书法大赛对各年级同学的获奖情况进行了统计并绘制了如下两幅不完整的统计图．请结合图中相关信息解答下列问题1扇形统计图中三等奖所在扇形的圆心角的度数是度2请将条形统计图补全3获得一等奖的同学中有来自七年级有来自九年级其他同学均来自八年级．现准备从获得一等奖的同学中任选2人参加市级钢笔书法大赛请通过列表或画树状图的方法求所选出的2人中既有八年级同学又有九年级同学的概率．
一定条件下可逆反应Cs+CO2g⇌2COg△H＞0达到平衡状态现进行如下操作①升高反应体系的温度②增加反应物C的用量③缩小反应体系的体积④减少体系中CO的量．上述措施中一定能使反应的正反应速率显著加快的
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6分 1.Whichoneofthefollowingfilmsisthelatestrelease? A.Interstellar B.BigHero6 C.TheHungerGames:MockingjayPart1 D.PenguinsofMadagascar 2.WhichofthefollowingisTRUEaccordingtothepassage? A.Thevoyagethroughthewormholeisaconsiderablechallenge. B.Ateamofcrime﹣fightersuncoversacriminalplotinBigHero6. C.PresidentCoinpushesKatnisstoprotestPeeta. D.PenguinshavetowrestlewithproblemsinDistrict13. 3.Thesimilaritythatexistsinthefourfilmsisthat. A.eachofthemisabranchoffilmseries B.allofthemareconcernedwithpositiveenergy C.theyallhaverealactorsandactressesinthemovie D.thefourfilmsallhavesomethingtodowithwildexploration
8分ThebookingnotesoftheplayTheAgeofInnocence: Price:﹩10 BOOKING Therearefoureasywaystobookseatsforperformance: ﹣﹣inperson TheBoxOfficeisopenfromMondaytoSaturday10a.m.﹣8p.m. ﹣﹣bytelephone Ring01324976toreserveyourticketsortopaybycreditcardVisaMasterCardandAmexaccepted. ﹣﹣bypost SimplycompletethebookingformandreturnittoGlobalTheatreBoxOffice. ﹣﹣online Completetheon﹣linebookingformatwww.Satan﹣fiedtheatre.com. DISCOUNTS Saver:﹩2offanyseatbookedanytimeinadvanceforperformancesfromMondaytoThursday.Saversareavailableforchildrenupto16yearsoldover60sandfull﹣timestudents. Supersaver:half﹣priceseatsareavailableforpeoplewithdisabilitiesandonecompanion.Itisadvisabletobookinadvance.Thereisamaximumofeightwheelchairspacesavailableandonewheelchairspacewillbehelduntilanhourbeforetheshow. Standby:bestavailableseatsareonsalefor﹩6fromonehourbeforetheperformanceforpeopleeligiblesuitableforSaverandSupersaverdiscountsandthirtyminutesbeforeforallothercustomers. GroupBookings:thereisatenpercentdiscountforpartiesoftwelveormore. School:schoolpartiesoftenormorecanbook﹩6standbyticketsinadvanceandwillgeteverytenthticketfree. Pleasenote:weareunabletoexchangeticketsorrefundmoneyunlessaperformanceiscanceledduetounforeseencircumstances. 1.IfyouwanttobookaticketyouCANNOT. A.usetheInternet B.ringthebookingnumberandpayfortheticketsbycreditcard C.gototheBoxOfficeonSundays D.completeabookingformandpostittotheBoxOffice 2.Accordingtothenoteswhocanget﹩2off? A.A20﹣year﹣oldfull﹣timecollegestudent. B.A55﹣year﹣oldwoman. C.An18﹣year﹣oldteenager. D.ThepeoplewhobooktheticketsonFridays. 3.Ifyoumakeagroupbookingforagroupofl4adultshowmuchshouldyoupay? A.﹩120. B.﹩126. C.﹩140. D.﹩150. 4.Fromthepassagewecanknowallthefollowinginformationexceptthat. A.itisadvisabletobookticketsinadvance B.theaudiencecan'trefundmoneyiftheperformanceisonshow C.agroupof13personscangeta10percentdiscount D.aschoolpartyof15studentsshouldpay﹩90forthestandbytickets
8分Tykoonisanonlinewebsitethatallowsyoutoteachyourchildfinancialprinciplesthroughallowancesassignmentoftasksanddailychores.Astheparentyoucanassignacashvaluetothethingsyouwantyourchildtodo.Thenyourchildcangoinacceptthetaskandaddtotheirwishlistofwhattheywouldliketopurchasewiththemoneythattheyearn. Let'sstartwiththeparentsideofthings.Theparentmustbetheonetosetuptheaccount.Yousimplyenteryourinformationandyourchild'sinformationtogetstarted.Youarethenabletoassignallowanceamountstoyourchild. Thenyoucanaddtasksforyourchildtoacceptandlinkthemtoeithertheirweeklyallowanceorapre﹣determinedamount.Yourchildisthenabletoacceptordeclinetheirtasks.Theycanseehowmucheachtaskearnshowoftentheyneedtodoitandwhattheywillgetiftheydo!Theycanadditemsthattheyareworkingtowardearningandcanevenearnnon﹣cashincentivessuchasextraTVtimeorstayinguplate! Tykoonisagreatwaytostartteachingyourchildaboutresponsibilityandfinancialprinciplesinfunandsafeway.Throughthecreationoftheirownprofileandtheabilitytoacceptordeclinetaskstheyaretaughttheskillsthattheywillneedlaterinlifewhentheyaremanagingtheirownbudgets!Soheadoverandsignupforafreeaccounttodayandwatchyourchildgetexcitedaboutdoingtheirchores! AndrightnowasaspecialrewardifyoushareTykoonwithyourfriendsandhavefivefriendssignupandstayactiveformorethanamonthyou'llearna＄25Amazon.comgiftcard!Sogetyourchildenrolled注册tellyourfriendsandlet'sstartteachingallourkidsabouttheimportantfinancialprinciplestoday! 1.Thepurposeofthetextisto. A.makeanadvertisement B.shareteachingexperience C.describeanonlinewebsite D.presentawayofmakingmoney 2.WhatcankidslearnfromTykoon? A.Theabilitytomanagetheirbudgets. B.Theresponsibilitytododailychores. C.Theskillstoearntheirownliving. D.Thetrickstoacceptorrefusetasks. 3.Itcanbeinferredfromthelastparagraphthat. A.noparentswillresistthespecialreward B.Amazonisaverypopularwebsite C.Tykoonwantstoattractmorevisitors D.friendsshouldshareinformation 4.Whatisthebesttitleofthetext? A.Tykoon﹣ASafeWaytoManageYourFinancialIssues B.HowtoCreateFunnyTasksforYourKidsontheWebsite C.OpeninganOnlineAccountwiththeHelpofTykoon D.TeachingYourKidsFinancialPrincipleswithTykoon
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8分Breathewaveandsmile.Alongwithmorethan300otherseniorsImarchedintothestadiumontheafternoonofMay10.Theaudienceburstintodeafeningcheers.Thehugestadiumshookwithallthewhistlingandclapping. ItwasasifaHollywoodsuperstarhadwalkedonstage.Andindeedeverysingleseniorthatdaywasastarofthemoment.Eachdeservedit.Theseniorshadbeenpreparingforfouryearsforthisonce﹣in﹣a﹣lifetimemoment﹣thecommencement. SeatedIwaitedanxiouslyfortheopeningaddress.AsaforeignexchangestudentIwasnotabletoreceiveadiploma.HoweverIstillhadthewonderfulfeelingofbeingpartofthings.LiketheothergraduatesIwasdressedinpurplecapandgown. OurprincipalMr.Gloverdeliveredashortwarmgreeting.TheUSnationalanthemfollowedandthenhandsonchestsasolemnPledgeofAllegiance效忠宣誓. Studentswhohadexcelledacademicallygavefarewellspeeches.Thetearsinsomeeyesconvincedmethatmanyhaddeepfeelingsabouttheoccasion.ItwasastheclassmottosaysLifebringsustearssmilesandmemories.Thetearsdry;thesmilesfade;butthememorieslastforever. Thencamethecore核心ofthecommencement.Hundredsofnameswereannounced.Eachgraduatewalkedacrossthestagetoreceivehisorherdiplomafromtheprincipal.Fromthedifferentcheerseachgraduategotwehadthefunnysensethatitwasakindofcompetitionofwhocouldcheertheloudest. Tobehonestthepresentationofdiplomasgotboring.Agirlsittingnexttomeevenstartedyawning.Butitwasn'tboringforthosereceivingthediploma:theywouldtreasurethemomenttheprincipalplacedthesacredbrowndocumentintheirhandsfortherestoftheirlives. Anewpageinthebookofthatperson'slifehadturned.Theywereglimpsingtheirfutures:futuresofchallengehardshipperhapslonelinesstoowhichwouldtakealloftheircourage. 1.What'sthearticlemainlyabout? A.AnAmericangraduationceremony. B.Theopeningceremonyofasportsmeeting. C.Apresentationofcollegediplomas. D.AUScollege'sfarewellparty. 2.AccordingtothetextwhichofthefollowingstatementsabouttheauthorisTRUE? A.Hollywoodsuperstarswenttoattendtheceremony. B.Everysingleseniorbecameasuperstarattheceremony. C.Wheneachgraduategothisorherdiplomatherewerecheers. D.Allgraduateswouldtreasurethediplomafortherestoftheirlives. 3.Therightorderofthefollowingeventsis. a.Diplomaswerepresentedtograduates. b.Studentsgavefarewellspeeches. c.TheUSnationalanthemwasplayed. d.Theprincipalgaveashortwarmspeech. e.Seniorswentintothestadium. A.b﹣c﹣a﹣d﹣e B.b﹣d﹣c﹣e﹣a C.e﹣d﹣b﹣a﹣c D.e﹣d﹣c﹣b﹣a 4.Fromthetextwecaninferthat. A.foreignexchangestudentscouldgetadiploma B.adiplomaguaranteesabrightfuture C.theceremonysymbolizesthebeginningofanewstageinlife D.everyonefeltexcitedatthepresentationofthediploma
10分Youoftenfindsomebodywhoworksaroundyoucomplainingallthetimedon'tyou? 1About70%ofAmericanssaybeingaroundnonstopcomplainerssometimeshasabadinfluenceonthem.Luckilyhereare4tipstohelpformpositivepatterns. 1Self﹣awareness Whenanegativethoughtpopsintoyourmindimmediatelycorrectit.InsteadoftellingyourselfThat'saniceshirtbutIcan'tafforditchangethemessagetoThatwilllookgreatwithmyblackpantswhenIcanaffordit.2 Ofcourseeveryonecomplainssometimes.Butthelessfrequentlyyoucomplainthebetteryouwillfeel. 2Distanceyourself 3Excuseyourselfandgosomewherequietsomewhereoutdoorsinthefreshair.Thinkofsomethingpleasantbeforereturning.Youhavetotakethisseriouslybecausenegativepeoplecanandwillpullyouintothequicksand困境. 3Don'ttrytochangecomplainers Ifyoufindyourselftrappedinagroupofcomplainersinameetingoratasocialeventsimplychoosesilence.Lettheirwordsbounceoffyouwhileyouthinkofsomethingelse.Attemptingtostopthecomplainingcanmakeyouatarget.4IfsomeonesaysIhateMondaysweekendsaretooshorttrytothinkI'mgladIrestedupovertheweekendsoI'mreadytomakesomeimprovementonthatbigproject. 45 WhensomeoneisshoutingatyouangrilythrowtheresponsibilitybackatthembyaskingSowhatdoyouintendtodoaboutit?Inmostcasescomplainersdon'treallywantasolution.Theyjustwanttospeakthemout.Ifyoumakethemawarethattheythemselveshavetofindthesolutionstheywillleaveyoualoneandfindsomeoneelsetocomplainto.Ifsoyouwillbehappy. A.Findsolutions B.Changeresponsibility C.Youhavegotalotofcompany. D.Bydoingthisitwillleadtopositivebehaviors. E.Butyoucanredirectthediscussioninyourownmind. F.Wheneverpossibleescapefromnegativeconversations. G.Youwillneverknowwhattheyaregoingtotalkabout. 1. 2. 3. 4. 5.
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15分AsanoldEnglishsayinggoesHonestyisthebestpolicy.Itismorethananoldcliché陈词滥调but1goodwaytoliveyourlife. Firsthonestyisthe2easychoicethatwecanmake.Whenpeoplegetcaughtinliesitalwayscoststhemsomething.Manyrelationshipsaredestroyedbylies. Secondhonestygivesusmuch3free.Manypeoplebelievethatbeinghonestlimitstheminlifebutthatisnottrue.Soonerorlaterthosedishonestpeople4payapricefortheiracts;onthecontrarywhenwearehonestweare5truefree. Ifthereweretwopeople6standbeforeyouapersonwitharecordofbeinghonestandaperson7isknowntobedishonestwhowouldyoubemorelikely8believe?I'msuremostpeoplewouldsidewiththehonestperson.9weliveinthetruthorweliveinlies.Thetruthsetsusfreandliesleaveusinnothingbutmoretroubles.Honestyisachoicethatwemakeeachday.Thechoiceis10you.Whatwillyouchoose? 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
如图在△ABC中AD平分∠BAC交BC于点D∠B＝30°∠ADC＝70°则∠C的度数是
8分AlibabastartedtakingtheleadinChinabyconnectingbigChinesemanufacturerswithbigbuyersacrosstheworld.Itsbusiness﹣to﹣businesssiteAlibaba.comallowedbusinesstobuyalmosteverything.Alibaba'sadvantagewasn'thardtojudge:size.AlibabaisjustbigevenbyChinesestandards.Itsmarketattracts231millionactivebuyers8millionsellers11.3billionordersayear﹣andAlibabaisjustthemiddleman.Itencouragespeopletouseitsmarkets﹣notchargingsmallsellersapercentageofthesale. IfyouwantaquicklookintotheinfluenceofAlibabaondailyChineselifetakemyexperience.ImovedtoBeijingayearagoandquicklygottiredofvisitingsmallstoresacrossthecrowdedpollutedcityof20millionpeopleinsearchofnewelectronicsbathroomfurnishingsandanythingelsemywifewanted.Whatexactlyareyoulookingfor?Whynottryit?myChineseteacheraskedmeoneday.WiththatmywonderfulnewrelationshipwithAlibababegan. Alibaba'soriginalbusiness﹣to﹣businessmodelnowissecondtoconsumerbuying.Chineseretail零售buyingmakesup80%ofAlibaba'sprofitandleadingthatgroupisTaobaowith800millionitemsforsaleandthemostunbelievableselectionofthingsyou'lleverfind.TMall.comisAlibaba'sotherbigsitewhereyoucanfindbrandnamegoodsfromNikeandUnilevernearthelowestprices. WhatIhaveahardtimeexplainingtofriendsandfamilybackintheU.S.ishowChinahasgonebeyondtraditionalshopping﹣big﹣boxretailersespecially﹣infavorofonlinepurchasesonTaobaoandafewothersites.InsmallertownsthanBeijingwherebigretailershavenotyettraveledshoppingonlineisshoppingandshoppingisTaobao. IhavealistofsomeofmyrecentpurchasesonTaobaoforasenseofhowwidethemarketplaceis.Almosteverythingarrivedadayortwoafterorderingwithfreeshipping.I'mnotevenabigbuyerbecauseIneedfriendstohelpmesearchtheChinese﹣languagesite.WhenIwassearchingmypurchasehistoryonmyChineseteacher'siPadwhichhelpsmebuygoodsIlookedthroughwithgreatdifficultyabout10ofherpurchasesforeveryoneofmine. 1.Alibaba'sadvantagemainlyliesin. A.itsbusiness﹣to﹣businessservice B.itsbigsize C.itsnotchargingsmallsellers D.itslowprice 2.Whatcanwelearnfromtheunderlinedsentenceinthepassage? A.Alibabaisofmiddlesizeamongalltheonlinesites. B.Alibabawillcontinuetodevelop. C.Alibabaactsasabridgebetweenthebuyersandsellers. D.Alibabastandsoutasthebestonlinesite. 3.Whatcanbeinferredfromthepassage? A.Alibaba'sbusiness﹣to﹣businessserviceearnsmoremoneythanretail. B.Taobaohasnoobviousadvantageoverothersimilaronlinesites. C.TMall.comprovidesmoreprofitthanTaobao. D.Theauthor'sChineseteacherisalsoanonlinepurchaselover. 4.Whatisthepassagemainlyabout? A.ShoppingonlineinChinaisTaobao. B.Alibabainfluencespeople'sdailypurchaseinChina. C.Shoppingonlinegoesbeyondtraditionalshopping. D.HowtheauthorpurchasesonlineinChina.
8分Raisedinafatherlesshomemyfatherwasextremelytightfistedtowardsuschildren.Hisattitudedidn'tsoftenasIgrewintoadulthoodandwenttocollege.IhadtoridethebuswheneverIcamehome.ThoughthebusstoppedabouttwomilesfromhomeDadnevermetmeeveninseverweather.IfIgrumbledhe'dsayinhisloudestfather﹣voiceThat'swhatyourlegsarefor! Thewalkdidn'tbothermeasmuchasthefearofwalkingalonealongthehighwayandcountryroads.Ialsofeltlessthanvaluedthatmyfatherdidn'tseemconcernedaboutmysafety.Butthatfeelingwascanceledonespringevening. Ithadbeenaparticularlydifficultweekatcollegeafterlonghoursinlabs.Ilongedforhome.WhenthebusreachedthestopIsteppedoffanddraggedmysuitcasetobeginthelongjourneyhome. Arowofhedge树篱edgedthedrivewaythatclimbedthehilltoourhouse.OnceIhadturnedoffthehighwaytostartthelastlapofmyjourneyIalwayshadasenseofrelieftoseethehedgebecauseitmeantthatIwasalmosthome.OnthatparticulareveningthehedgehadjustcomeintoviewwhenIsawsomethinggraymovingalongthetopofthehedgemovingtowardthehouse.UponcloserobservationIrealizeditwasthetopofmyfather'shead.ThenIkneweachtimeI'dcomehomehehadstoodbehindthehedgewatchinguntilheknewIhadarrivedsafely.Iswallowedhardagainstthetears.Hedidcareafterall. Onlatervisitsthatspotofgraybecamemywatchtower.IcouldhardlywaituntilIwascloseenoughtowatchforitssecretmovementabovethegreenery.UponreachinghomeIwouldfindmyfathersittinginnocentlyinhischair.So!Mysonit'syou!he'dsayhisfacelengtheningintopretendedsurprise. IrepliedYesDadit'sme.I'mhome. 1.WhatdoestheunderlinedwordgrumbledinParagraph1probablymean? A.Acceptedhappily. B.Explainedclearly. C.Agreedwillingly. D.Spokeunhappily. 2.Whatmadetheauthorfeelupsetwas. A.thetirednessafterlonghoursinlabs B.thefearofseeingsomethingmoving C.thefeelingofbeinglessthanvalued D.thelonelinessofridingthebushome 3.Theauthor'sfatherwatchedbehindthehedgebecause. A.hewasconcernedabouthisson'ssafety B.hewantedtohelphissonbuildupcourage C.hedidn'twanttomeethissonatthedoorway D.hedidn'tthinkhissonwasoldenoughtowalkalone 4.Whichofthefollowingcanbethebesttitleforthetext? A.MyFather'sSecret. B.MyCollegeLife. C.TerribleJourneyHome. D.RidingBusAlone.
利用右图装置探究铁在海水中的电化学防护下列说法不正确的是
在一定温度下向饱和的烧碱溶液中放入一定量的过氧化钠充分反应后恢复到原温下列说法正确的是
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