首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
某小组根据工业炼铁的原理设计如图装置进行铁的冶炼并对尾气进行处理． （1）写出玻璃管中发生反应的化学方程式． （2）图中虚线框中的装置作用是什么？ （3）反应后集气瓶溶液中的溶质可能只有Na...
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
2014年12月28日青烟威荣高铁正式通车1如图1高铁车头的玻璃是用无机玻璃树脂塑料等粘合而成能耐受
小组设计如图1研究铁的冶炼.1用加水的方法可以把集气瓶中一氧化碳导出来实验时应先注水片刻后再加热的目
实验室根据工业炼铁的原理设计了如图所示装置进行实验请回答1主要成分为氧化铁的矿石名称为_______
钢铁的冶炼是人类文明的一个重要的标志如图是实验室冶炼铁的装置图1写出冶炼铁的化学方程式2上述实验的现
某化学小组对铁的冶炼铁的锈蚀与防护进行以下实验探究.1该小组设计如图1研究铁的冶炼.①实验时应先注水
2014年12月28日青烟威荣高铁正式通车.1如图1高铁车头的玻璃是用无机玻璃树脂塑料等粘合而成能耐
某化学小组对铁的冶炼铁的锈蚀与防护进行以下实验探究.1该小组设计如图1研究铁的冶炼.①A装置为CO的
铁是目前世界年产量最高的金属请回答1生活中用铁锅炒菜是利用了金属铁的性2验证铁和铜的金属活动性顺序除
工业上以赤铁矿为原料冶炼铁某钢铁厂现有200t杂质为36％的赤铁矿理论上能冶炼出多少铁▲▲▲
铁的冶炼工业冶铁的主要设备是_________把__________________________
某化学小组对铁的冶炼铁的锈蚀与防护进行以下实验探究.1该小组设计如图1研究铁的冶炼.①实验时应先注水
某化学小组对铁的冶炼铁的锈蚀与防护进行以下实验探究.1该小组设计如图1研究铁的冶炼.①实验时应先注水
2014年12月28日青烟威荣高铁正式通车.1如图1高铁车头的玻璃是用无机玻璃树脂塑料等粘合而成能耐
如图是某同学设计的冶炼铁的实验装置下列有关说法中正确的是
该实验开始时应先通CO一段时间，再加热
该反应属于置换反应
该实验设计合理，没有任何缺陷
该反应与CO还原CuO的反应原理、装置完全相同
2014年12月28日青烟威荣高铁正式通车.1如图1高铁车头的玻璃是用无机玻璃树脂塑料等粘合而成能耐
某小组为研究原电池原理设计如图装置下列叙述正确的是
若X.为Fe，Y.为Cu，铁为正极
若X.为Fe，Y.为Cu，电子由铜片流向铁片
若X.为Fe，Y.为C.，碳棒上有红色固体析出
若X.为Cu，Y.为Zn，锌片发生还原反应
某小组为研究原电池原理设计如图装置下列叙述正确的是
若X.为Fe，Y.为Cu，铁为正极
若X.为Fe，Y.为Cu，电子由铜片流向铁片
若X.为Fe，Y.为C.，碳棒上有红色固体析出
若X.为Cu，Y.为Zn，锌片发生还原反应
工业上以氨气为原料制备硝酸的过程见图1如下某课外小组认真分析了工业制取硝酸的流程及反应原理设计了如图
工业上用一氧化碳还原铁的氧化物的原理来冶炼铁．某炼铁厂新购进1250吨含四氧化三铁80%的磁铁矿理
江西即将迎来高铁时代赣州到南昌的高铁将于2019年建成届时赣州到南昌只需2小时1如图1高铁的车体材料
热门试题
更多
8分Usuallywhenyouquitajobyoudon'texpectyourformeremployer'spartinggift. Wellatleastsomeemployeesatacompanyhavewalkedawaywithalargeamountofmoneyontheirwaytonewopportunities.BloombergreportsthatanonlinestoreAdoreMe﹣foundedin2011andbasedinNewYork﹣hashandedafewdepartingemployeesacheckfor﹩10000.Inonecaseanemployeewasleavingthecompanytospendtimetravelingwhileanotherlefttomoveacrossthecountry.Thereforeit'snotliketheywereleavingtoworkforamajorcompetitorlikeVictoria'sSecret. Whyaren'tmoreAdoreMeemployeesquittingtotakeadvantageofthebigpayout?Bloombergnotesthatthedeparturecheckisonlyprovidedoncertainoccasionssothereisnoguaranteethatleavingthecompanywillcomewitha﹩10000partinggift.AdoreMe'sCEOMorgantoldBloombergthatthepayoutsprovideachancetosomeemployeestostaywithacompanythatissokindtoworkerswhotheCEOsaysputinalotofhardworkandeffort.Meanwhilepotentialemployeesmayalsobeattractedtothecompanyafterhearingnewsofitsgenerouspartinggifts. It'sunclearhowwellAdoreMe'sstrategy策略ofhandingoutcheckstoformeremployeeswillworkwhenitcomestokeepingandinspiringcurrentworkersmuchlesswhetheritwillhelpattractnewtalents. Thestart﹣upisn'tthefirsttotrythispractice.Earlierthisyeare﹣commercecompanyBoxedcreatedanon﹣profittocoverthecollegetuitionofitsemployees'childrenwhileanothercompanyhasusedrewardsfromitscorporate公司的creditcardstopayforemployees'personaltravel. 1AnemployeeinAdoreMemayaccordingtoParagraph2. A.receiveachecktosettledowninNewYork B.leavetoworkforVictoria'sSecret C.getacheckfor﹩10000whenleavingthecompany D.have﹩10000aslongastheyleave 2Victoria'sSecret. A.doesthesameasAdoreMe B.isthebranchofAdoreMe C.isatravelagency D.isAdoreMe'scompetitor 3WhattheCEOofAdoreMeimpliesthat. A.oneoftheirpurposesistoattractpotentialemployees B.thispolicyisaimedtocompetewithVictoria'sSecret C.alltheemployeesinthecompanyworkveryhard D.moreandmoreemployeeswillquittheirjobtoleave 4Basedonthelasttwoparagraphswecanknowthat. A.thestrategywillsurelyattractnewworkers B.somecompaniesaretryingtokeepandinspiringtheirworkers C.Boxedisthefirstcompanytocovertheemployees'tuition D.manycompaniesarelearningfromAdoreMe
15分LastyearmybrotherandIwenttoMiamiforavacation.Someofmyfriendswho1betherebeforesaiditwasawonderfulholidaydestination.Beforewewentwehadplannedformonths.Whenthedaycamewewereready. Afterourplanelandedwewenttothehotel.Wehadmadeourreservationsixmonths2earlybutthemanatthefrontdesksaidtherehadbeenamistake.We3tellthatourroomshadn'tbeenreservedforthatweek4fortheweekafter.Ididn'tunderstand5thiswouldhappenandmycreditcardhadalreadybeencharged6thereservation.What'sworsethehotelhadbeenfullybooked.Whenwewerewonderingwhattodothemanagercameout.Shewas7surprisehelpful.SheapologizedforthemistakeandgaveusaspareVIProomon8topfloor.Wehadneverstayedinsuchanamazingroomandweweren'tchargedextra. ThenextdaymybrotherandIwenttothebeach9wewatchedsomepeopleplayvolleyball.Wegotalittle10sunburnbutthedayhadbeensorelaxingthatwedidn'tmind.
小明家有一支温度计把它插在冰水混合物中时温度为4℃把它插在沸水中时温度为94℃那么1这支温度计准确吗它每小格代表多少摄氏度2当读数为34℃时实际温度为多少3如果用它来测温度为50℃的热水它的示数为多少
10分Bullying欺凌isaprobleminmanyschools.Maybelotsofyouhaveevercomeacrossschoolbullies.1 Ignorethebullyandwalkaway.It'sdefinitelynotacoward'sresponse.Sometimesitcanbeharderthanlosingyourtemper.Walktallandholdyourheadhigh.2 Holdtheanger.Whodoesn'tgetreallyupsetwithabully?3Bullieswanttoknowtheyhavecontroloveryouremotions.Workoutyourangerinotherwayssuchasthroughexerciseorwritingitdown. 4Howeveryouchoosetodealwithabullydon'tusephysicalforce.Notonlyareyoushowingyourangerbutyoucanneverbesurewhatthebullywilldoinresponse.Youaremorelikelytobehurtandgetintotroubleifyouuseviolenceagainstabully.Youcanstandupforyourselfinotherwayssuchasgainingcontrolofthesituationbywalkingaway. Talkaboutit.Itmayhelptotalktoaguidanceadvisorteacherorfriend.5Talkingcanbeagoodoutletforthefearsandfrustrationsthatcanbuildwhenyou'rebeingbullied. A.Takechargeofthesituation. B.Thistypeofbodylanguagemeansyouarenoteasilyharmed. C.Herearesomethingsyoucandotofightbullying. D.Don'tgetphysical. E.Butthat'sexactlytheresponseheorsheistryingtoget. F.Someadultsbelievethatbullyingispartofgrowingup. G.Peopleabovecangiveyouthesupportyouneed.
30分Sometimespeoplecomeintoyourlifeandyouknowrightawaythattheyaremeanttobethere.Theyservesomesortof1toteachyoualessonorhelp2whoyouareorwhoyouwanttobecome.Youneverknow3thesepeoplemaybe﹣﹣﹣yourroommateneighborprofessorlong﹣lostfriendloverorevenacomplete4butwhenyoulockyoureyeswiththemyouknowatthatverymomentthattheywill5yourlifeinsomedeepway.Andsometimesthingshappentoyouandtheymayseem6horribleandunfairatthetimebut7overcomingthesedifficultiesyouwouldhaveneverrealizedyourpotentialstrengthwillpowerorheart.Everythinghappensforan8.Nothinghappensbychanceor9goodorbadluck.Illnessinjurylovelostmomentsoftruegreatnessandstupidity﹣﹣﹣alloccurto10thelimitsofyoursoul.Withoutthesesmalltestslifewouldbelikeasmoothlypavedstraightflatroadtonowhere.Safeandcomfortablebutdulland11.Thepeopleyoumeetwhoaffectyourlifeandthesuccessand12youexperience﹣﹣﹣theyaretheonesthatcreatewhoyouare.Eventhe13experiencescanbelearnedfrom.Ifsomeonehurtsyoubetrays背叛youorbreaksyourheart14themfortheyhavehelpedyoulearnabout15andtheimportanceofbeing16aboutwhomyouopenyourheartto.Ifsomeonelovesyoulovethemback17notonlybecausetheyloveyoubutbecausetheyareteachingyoutoloveandopenyourheartandeyestothingsyouwouldhave18seenorfeltwithoutthem.Makeeveryday19.Appreciateeverymomentandtakefromiteverythingthatpossiblycanforyoumayneverbeabletoexperienceitagain.Peopleareliketeabags﹣﹣﹣youhavetoputtheminhotwaterbeforeyouknowhow20theyare.1A.way B.plan C.purpose D.idea2A.figureout B.giveout C.takeout D.sortout3A.what B.who C.which D.where4A.child B.teacher C.classmate D.stranger5A.affect B.create C.design D.ruin6A.important B.common C.painful D.practical7A.after B.on C.by D.without8A.change B.reason C.effect D.return9A.bymeansof B.onbehalfof C.intermsof D.withregardto10A.improve B.decrease C.test D.set11A.meaningless B.rough C.changeable D.winding12A.decisions B.failures C.achievements D.lessons13A.unforgettable B.bad C.unusual D.interesting14A.appreciate B.ignore C.desert D.forgive15A.independence B.bravery C.trust D.selflessness16A.enthusiastic B.cautious C.crazy D.worry17A.unconsciously B.unconditionally C.carefully D.differently18A.always B.never C.seldom D.sometimes19A.count B.mind C.work D.vary20A.expensive B.fresh C.precious D.strong
15分Climatechangehascausedariseinsealevels.Thishasincreasedtheamountofsaltinfreshwater1useoncoastalfarms.Asaresultfarmersare2gradualunabletousefieldsclosetothesea.HoweverMarcVanRijsselbergafarmerintheNetherlandsisnowusinga3mixofseaandfreshwater4growhealthyandtastyvegetables.HeteamedupwithscientistsfromtheFreeUniversityanddividedafarm5eightnegatedareas.Separatepipespumpedfreshandseawaterandacomputerprogramcreatedwaterwitheightlevelsofsalinity含盐度.Thewaterlevelsandthelevelsofsalinitywas6controlbycomputerizedmeasuringdevicescalledsensors.Mr.VanRijsselbergsaidhewasabletoharvestvegetablesfrommostoftheeighttestingareas.Hesaidthevegetablesweresmallerthan7growninfreshwater.Buthesaidtheyalsohadmoresugarandsaltsotheytastedmuch8good.Hefoundthatpotatoesgrewbetterthantheothervegetablesinthecombinationofseaandfreshwater.Mr.VanRijsselbergsaidfourkindsofthesepotatoeswouldbesettoPakistan9thousandsofhectaresofland10damagebysalinizationlastyear.
25分随着人们生活水平的提高旅游成了大家生活的一部分.假如你是李华正在参加网络征文Beingacivilizedtourist. 内容:1.旅游现状;2.整改措施 要求:100单词左右
89岁的侯云德院士获得2017年国家最高科学技术奖这位著名的医学病毒学专家发现最小的病毒的半径仅有0.000009毫米将0.000009用科学记数法表示应是
如图所示看漫画读信息回答问题．茶叶要求在避光干燥的条件下贮存常温下保质期一般为18个月为延长茶叶的保质期贮存少量茶叶的方法是将茶叶包装好后放入冰箱中用低温的方法贮存茶叶这样可将茶叶的保质期延长达两年之久．1请解释图中小朋友提出的问题2在炎热的夏天把茶叶从冰箱中取出来后能否马上打开茶叶的包装为什么什么时候才能打开
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. Istillrememberamathslesson.Mymathsteachercopiedachallengingproblemontheblackboardandasksthewholeclasswhethertherewouldbeonestudentwhoknewwhattoworkitout.Severalminutespassedbutthewholeclasswasincompletelysilence.AsmatteroffactIcameacrosstheprobleminabooktheotherday.HoweverIwalkedtotheblackboardandworkeditoutinnotime.Whatasurprisingexpressionwasonmymathsteacher'sface!Hefeltveryhappythathepraisedmeonpublic.SincethenmathshasbeenbecomeoneofmyfavoritesubjectandIhavealsomaderapidprogressinmaths.
8分Howfitareyourteeth?Areyoulazyaboutbrushingthem?Neverfear:Aninventorisonthecase.Anelectrictoothbrushsenseshowlongandhowwellyoubrushanditletsyoutrackyourperformanceonyourphone. TheKolibreetoothbrushwasexhibitedattheInternationalConsumerElectronicsShowinLasVegasthisweek.ItsenseshowitismovedandcansendtheinformationtoanAndroidphoneoriPhoneviaaBluetoothwirelessconnection. Thetoothbrushwillbeabletoteachyoutobrushrightdon'tforgettheinsidesoftheteeth！andmakesureyou'rebrushinglongenough.It'skindoflikehavingadentistactuallywatchyourbrushingonadaytodaybasissaysThomasServaltheFrenchinventor. Thetoothbrushwillalsobeabletotalktootherapplicationsonyourphonesodeveloperscouldforinstancecreateagamecontrolledbyyourtoothbrush.Youcouldscorepointsforbeatingmonstersamongyourteeth.WetrytomakeitsmartbutalsofunServalsays. Servalsayshewasinspiredbyhisexperienceasafather.Hewouldcomehomefromworkandaskhiskidsiftheyhadbrushedtheirteeth.TheysaidyesbutServalwouldfindtheirtoothbrushheadsdry.Hedecidedheneededabrushthatreallytoldhimhowwellhischildrenbrushed. ThecompanysaystheKolibreewillgoonsalethissummerforD|S99toD|S199dependingonfeatures.TheU.S.isthefirsttargetmarket. Servalsaysthatonedayit'llbepossibletoreplacethebrushonthehandlewithabrushingunitthatalsohasacamera.Thecameracanevenexamineholesinyourteethwhileyoubrush. 1WhichofthefollowingmightmaketheKolibreetoothbrushfun? A.Itcanbeusedtoupdatemobilephones. B.Itcanbeusedtoplaymobilephonegames. C.Itcansendmessagestootherusers. D.Itcantalktoitsdevelopers. 2WhatcanweinferaboutServal'schildren? A.Theywereunwillingtobrushtheirteeth. B.Theyoftenfailedtocleantheirtoothbrushes. C.Theypreferredtouseatoothbrushwithadryhead. D.TheylikedbrushingtheirteethafterServalcamehome. 3WhatcanwelearnaboutthefuturedevelopmentoftheKolibree? A.Thebrushhandlewillberemoved. B.Amobilephonewillbebuiltintoit. C.Itwillbeusedtofillholesinteeth. D.Itwillbeabletocheckusers'teeth. 4WhatisParagraph5mainlyabout? A.HowServalfoundouthiskidsliedtohim. B.WhyServalthoughtbrushingteethwasnecessary. C.HowServaltaughthiskidstobrushtheirteeth. D.WhatinspiredServaltoinventthetoothbrush.
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.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. It'sreportedthattheworkersinthedining﹣hallinYantaiUniversityeatleftoversthatcausesgreatconcernandattention.Somesaytheyarejustforshow;othersbelievedtheysetgoodexamplesforusyoungstudents.Inouropinionstheydorightandweshouldlearnfromthem. Infacttheirbehaviorraisesourawarenessoffightwaste.Westudentsshouldneverthrowleftoversandtakewhatwecan'teatwithus.Inanadditionweshoulddevelopthehabitofnotorderingorbuyinglessthanwhatwecaneat.Lastbutnotleasttheworkersinthedining﹣hallshouldallowthestudentsorderhalfthefoodsothattheycaneatthemup. IthinkwestudentsshouldsayNotofoodwasteorneverwillanyonewasteanyfoodinfuture!
矩形AOBC中OB＝8OA＝4．分别以OBOA所在直线为x轴y轴建立如图1所示的平面直角坐标系．F是BC边上一个动点不与BC重合过点F的反比例函数y＝k＞0的图象与边AC交于点E． 1当点F运动到边BC的中点时求点E的坐标 2连接EFAB求证EF∥AB 3如图2将△CEF沿EF折叠点C恰好落在边OB上的点G处求此时反比例函数的解析式．
某地下车库出口处安装了“两段式栏杆”如图1所示点A是栏杆转动的支点点E是栏杆两段的联结点．当车辆经过时栏杆AEF最多只能升起到如图2所示的位置其示意图如图3所示栏杆宽度忽略不计其中AB⊥BCEF∥BC∠AEF＝143°AB＝AE＝1.3米那么适合该地下车库的车辆限高标志牌为多少米结果精确到0.1．参考数据sin37°≈0.60cos37°≈0.80tan37°≈0.75
某班为奖励在学校运动会上取得好成绩的同学计划购买甲乙两种奖品共20件．其中甲种奖品每件40元乙种奖品每件30元．如果购买甲乙两种奖品共花费了650元求甲乙两种奖品各购买了多少件．设购买甲种奖品x件乙种奖品y件．依题意可列方程组为
25分假定你是李华本已约好与Kelvin今天4月8日晚上一起看电影捉妖记MonsterHunt.但你临时有事他打篮球未回故给他写留言条.要点如下:1.临时有事要做.2.具体更改的见面时间地点.3.此事已告知谁.4.见字告知.注意:1.词数100左右.2.可以适当增加细节以使行文连贯.3.开头结尾已给.
6分 CampAll﹣Star OneofaKindSummerCampsforKids WelcometoCampAll﹣StaryourNo.1summersportscampforkids!LocatedonthefamousKentsHillSchoolcampusbythebeautifullakeCampAll﹣Starhostskidsfromaroundtheworld.Whenthinkingaboutyournextovernightsummercampconsiderthebest﹣CampAll﹣Star! GreatSportsSummerCampsforKids CampAll﹣StarstandsoutamongthesuccessfulcampsintheU.S.Wehavethebestsportsfieldsandcourtstomakeyourchild'ssportscampexperienceasuccessfulone.Yourchildcanenjoyplayingforhoursinanyofourmorethan30sportsandactivitieseachday.Ourcampertostaffrateisthreetoonewhichmakesitpossibleforchildrentoreceivemorecarefulinstruction. Wehaveawidevarietyofactivitiesandsportstochoosefrom:fishingdancebasketballsoccerbaseballandtennis.Boysandgirlsaged8﹣16cancustomizetheirownschedulesinour234or6weeksummercampsessionforkids. TheaimofCampAll﹣Staristodevelopathleticskillsencourageabilitiesinleadershipfairplayandteamworkandprovideafunrewardingandmemorablesummersportscampexperience.Ourstaffhavetheexperienceandqualifiedtrainingnecessarytoensurethatyourchildhasasuccessfulmemorableandenjoyabletimeatoursummercamp. CallTodayAboutOurOvernightSummerCampsforKids Don'tletyourkidswasteanothersummerplayingvideogamesandsittingaround.Letthemenjoytheirtimeandgetsomeexerciseatourexcitingandfriendlysummersportscamp.Informationforourupcomingcampscanbefoundonourwebsite.Foradditionalinformationorquestionscontactustoday.WehopeyourkidscanjoinusatCampAll﹣Star! 1CampAll﹣Starstandsoutamongtheothersbecauseit. A.issurroundedbyabeautifullake B.providesvariousactivitiesandsports C.offerstimelyinformationonitswebsite D.allowschildrentoplayoutsidealldaylong 2OneofthegoalsofCampAll﹣staristo. A.firekids'imagination B.buildupkids'confidence C.developkids'leadershipskills D.promotekids'self﹣control 3Thisadvertisementisintendedfor. A.parents B.coaches C.staff D.Campers
8分TheFBIannouncedonMondaythatithadsuccessfullyhacked入侵intoaniPhoneusedbyagunmanresponsibleforamassshootinginCalifornia.TheannouncementlefttechgiantAppleInc.wonderingaboutthesecurityofoneofitskeyproducts.AndtheFBIwillnottellhowitgotpastthelocks. ThenewsendsalegalbattlethatbeganmorethanamonthagowhentheFBIgotacourtorderfromafederaljudgedemandingthatApplehelpthemtoaccessthedataonthephone.ThephonehadbelongedtoFarook.OnDecember22015FarookandMalikkilled14peopleandwounded22othersinSanBernardinoCalifornia.Thetwowerekilledafewhoursaftertheattack.ThenextdayanFBIteamfoundFarook'siPhone5cinthecar.Wheninvestigatorsturnedonthephoneitaskedthemtoenterafour﹣digitpasscode.Thephonewassettoeraseallofitsdataafter10incorrectguesses.NotevenApplethecompanythatmadethephonehadthecode.TheFBIaskedAppletohelpthemgetaccesstotheinformationstoredinthephone. ApplehelpedtheFBIwithitsinvestigationbutonlytoacertainpoint.TheFBIthenaskedAppletocreateanewversionofthephone'soperatingsystemonewithoutthe10﹣guesslimit.ButApplerefused.CookarguedthatifApplecreatedatooltohackintoaniPhoneandthattoolgotintothewronghandsthesecurityofeveryiPhonewouldbeatrisk. CooknotedthatpeoplestoreanincredibleamountofpersonalinformationontheiriPhones.Thatinformationhesaidneedstobeprotectedfromhackersandcriminals.WhilewebelievetheFBI'sintentionsaregooditwouldbewrongforthegovernmenttoforceustobuildabackdoorintoourproducts. OnMarch21theFBIannouncedthatanoutsidepartyhadcomeforwardwithapossiblewaytobreakintothephone.NowhavingconfirmedthatthecodehasbeencrackedtheFBIhasdroppedthelegalbattlewithApple. 1TheFBIwantstogainaccesstothephoneto. A.locateFarookandarresthim B.monitorFarookandhisteammates C.gettheinformationstoredinit D.helpcreateanoperatingsystem 2Theunderlinedworderasemaybeclosestinmeaningto. A.restore B.delete C.update D.replace 3CookrefusedtohelptheFBIforfearthat. A.theFBIwillknowhowtoestablishtheoperatingsystem B.ApplewilllosethebattleagainsttheFBI C.Apple'suserswillknowtheproducerhasnocodes D.itmaycausesecurityproblemsfortheiPhoneusers 4Whichofthefollowingcanbethebesttitleofthepassage? A.LegalBattleBetweenAppleandFBI B.WorstTerroristEverinHistory C.SecurityConcernsofApple D.AppleHelpsFBIinFightingTerrorism
8分Grown﹣upsareoftensurprisedbyhowwelltheyremembersomethingtheylearnedaschildrenbuthaveneverpracticedeversince.Amanwhohasnothadachancetogoswimmingforyearscanstillswimaswellaseverwhenhegetsbackinthewater.Hecangetonabicycleaftermanyyearsandstillrideaway.Hecanplaycatchandhitaballaswellashisson.AmotherwhohasnotthoughtaboutthewordsforyearscanteachherdaughterthepoemthatbeginsTwinkletwinklelittlestarorrememberthestoryofCinderellaorGoldilocksandtheThreeBears.Oneexplanationisthelawofoverlearningwhichcanbestatedasfollows:Oncewehavelearnedsomethingadditional额外的learningtrialsincreasethelengthoftimewewillrememberit.Inchildhoodweusuallycontinuetopracticesuchskillsasswimmingbicycleridingandplayingbaseballlongafterwehavelearnedthem.WecontinuetolistentoandremindourselvesofwordssuchasTwinkletwinklelittlestarandchildhoodtalessuchasCinderellaandGoldilocks.Wenotonlylearnbutoverlearn.Themultiplicationtables乘法口诀表areanexception例外tothegeneralrulethatweforgetratherquicklythethingsthatwelearninschoolbecausetheyareanotherofthethingsweoverlearninchildhood.Thelawofoverlearningexplainswhycramming突击学习foranexaminationthoughitmayresultinapassinggradeisnotasatisfactorywaytolearnacollegecourse.Bycrammingastudentmaylearnthesubjectwellenoughtogetbyontheexaminationbutheislikelysoontoforgetalmosteverythinghelearned.Alittleoverlearningontheotherhandisreallynecessaryforone'sfuturedevelopment.1WhatisthemainideaofParagraph1?A.Peoplerememberwellwhattheylearnedinchildhood.B.Childrenhaveabettermemorythangrown﹣ups.C.Poemreadingisagoodwaytolearnwords.D.Storiesforchildrenareeasytoremember.2Theauthorexplainsthelawofoverlearningby.A.presentingresearchfindingsB.settingdowngeneralrulesC.makingacomparisonD.usingexamples3Accordingtotheauthorbeingabletousemultiplicationtablesis.A.aresultofoverlearningB.aspecialcaseofcrammingC.askilltodealwithmathproblemsD.abasicsteptowardsadvancedstudies4Whatistheauthor'sopiniononcramming?A.Itleadstofailureincollegeexams.B.It'shelpfulonlyinalimitedway.C.It'spossibletoresultinpoormemory.D.Itincreasesstudents'learninginterest.
8分Aswegrowoldwerealizethatwehavesolittletimetoreadandtherearesomanygreatbooksthatwe'veyettogetaroundto.Yetre﹣readersareeverywherearoundus.Forcertainfansre﹣readingTheLordoftheRingsisaconventionalpracticeannually.OnefriendtoldmethatJaneAusten'sEmmacanstillsurprisehimdespitehishavingreaditover50times. Newsuddenclearunderstandingscanbegainedfromtheprocessofre﹣reading.JournalistRebeccaMeadalong﹣timeEnglishwomaninNewYorkfirstcameacrossGeorgeEliot'sMiddlemarchat17.Sincethenshehasreaditagaineveryfiveyears.Witheachre﹣readingithasopenedupfurther;ineachchapterofherlifeithasresonated引起共鸣differently.Meadevidencedthelargenumberofwaysinwhichreallygoodbooksnotonlystandthetestofrepeatreadsbutalsoofferfreshgiftseachtimewecracktheirspines.Thesekindsofbooksgrowwithus. Scientistshavealsorecognizedthementalhealthbenefitsofre﹣reading.ResearchconductedwithreadersintheUSfoundthatonourfirstreadingweareconcernedwiththewhatandthewhy.Secondtimeroundwe'reabletobetterappreciatetheemotionsthattheplotcontinuestoexpress.AsresearcherCristelRusselloftheAmericanUniversityexplainedreturningtoabookbringsneworrenewedappreciationofboththegreatbookanditsreaders. It'struethatweoftenfindformerselvesonthepagesofoldbooksifwe'refondofmakingnotesonthepages.Thesetextscancarryusbacktoatimeandplaceandremindusofthekindofpersonthatwewerethen.We'rechangednotonlybylivedexperiencebutalsobyreadexperience﹣bythebooksthatwe'vediscoveredsincelastreadingtheoneinourhand. Moresothanthemoviedirectororthemusicianthewritercallsuponourimaginationsusingwordstoleadustopicturethisdeclarationofloveorthatunfaithfulnessinlife.Abookisajointprojectbetweenwritersandreadersandwemustpoursomuchofourselvesintoreadingthatourownlifestorycanbecomeconnectedwiththestoryinthebook. Perhapswhat'sreallystrangeisthatwedon'tre﹣readmoreoften.Afterallwewatchourfavouritefilmsagainandwewouldn'tthinkoflisteningtoanalbumonlyonce.Wetreasuremessyoldpaintingsasobjectsyetofallartformsliteraturealoneisalargelyone﹣timedelight.AbookofcoursetakesupmoretimebutasMeadconfirmstherewardsmakeitadequatelyworthwhile. 1ThetwobooksarementionedinParagraph1mainlyto. A.attracttheattentionofreaders B.introducethetopicofthepassage C.providesomebackgroundinformation D.showthesimilaritybetweenre﹣readers 2TheunderlinedexpressioncracktheirspinesinParagraph2refersto. A.recitethem B.re﹣readthem C.recallthem D.retellthem 3Itcanbelearnedfromthepassagethat. A.readingbenefitspeoplebothmentallyandphysically B.readersmainlyfocusonfeelingsontheirfirstreading C.weknowourselvesbetterthroughre﹣readingexperience D.writersinspirethesameimaginationsasfilmdirectorsdo 4Thepurposeofthepassageisto. A.callondifferentunderstandingsofoldbooks B.focusonthementalhealthbenefitsofreading C.bringawarenesstothesignificanceofre﹣reading D.introducetheeffectivewaysofre﹣readingoldbooks
如图1在矩形ABCD中点E在CD上∠AEB＝90°点P从点A出发沿A→E→B的路径匀速运动到点B停止作PQ⊥CD于点Q设点P运动的路程为xPQ长为y若y与x之间的函数关系图象如图2所示当x＝6时PQ的值是
如图已知在▱ABCD中AE⊥BC于点E以点B为中心取旋转角等于∠ABC把△BAE顺时针旋转得到△BA′E′连接DA′若∠ADC＝60°AD＝5DC＝4则DA′的大小为．
先化简再求值其中x从﹣223五个数中适当选取一个．
6分 BLOODDRIVE&MARROW骨髓REGISTRATION Thesepatientsdeserveachanceatanormalhappyfutureandtheyrelyonthekindnessofstrangerstomakethathappen. ﹣DaisyIsabelle'sMother IsabelleisthedaughterofDaisyandSamanMirzaei.InJanuary2008Isabellewasdiagnosed诊断withageneticblooddisorderbetathalassemia.Isabelle'sbodyisunabletoproducehealthyredbloodcells.AsaresultIsabellehasbeenreceivingbloodtransfusions输血every4﹣6weekssinceshewas11monthsold.Alifetimeofregulartransfusionscanleadtoseriousmedicalproblems.Heronlychanceatanormalhealthylifeistohaveamarrowtransplant.IsabelleisanonlychildsodoctorshavestartedasearchforanunrelatedmarrowdonorthroughtheBeTheMatchRegistry.TheMirzaeifamilyasksthatyouconsiderhelpingpatientslikeIsabellebyregisteringtobeamarrowdonorandgivethegiftoflifethegiftofblood. HeldatWileyHall WednesdayMarch262014 BehindHeathmanDormitory/ButterfieldRd. 12:00PM﹣6:00PM Don'tforgettobringyourdriver'slicenseoranotherformofidentificationwhenyoudonate. Visitwww.ribc.orgtomakeanappointmentSponsorCode3390. FREEKingstonPizza!！! www.ribc.org800﹣283﹣8385 TheRhodeIslandBloodCenterdistributesbloodproductstohospitalsinRhodeIslandandSouthernNewEngland. 1Wecanlearnfromthepassagethat. A.theblooddriveisorganizedbyIsabelle'smother B.Isabellereceivesbloodtransfusionsregularly C.Isabellehasbeenillfor11months D.doctorswillsponsorIsabelle'sfamily 2ThosewhowanttohelppatientslikeIsabellecan. A.cometoWileyHalleveryWednesday B.visitwww.ribc.orgforanappointment C.contacttheirparentsat8002838385 D.callathospitalsinRhodeIsland 3Tobeamarrowdonoryoumust. A.bearelativeofthepatient B.carryadriver'slicense C.beatleast18yearsold D.applytoMichael'sFund
如图直线AB与CD相交于点OEO⊥CD于点OOF平分∠AOC若∠BOE∠AOC＝45则∠EOF为度．
下列计算正确的是
10分 TheiPonGeneration Todayitiscommontoseepeoplewhowalkaboutwithcoloredwireshangingfromtheirearswherevertheygo.Theymoveaboutintheirpersonalbubblessometimesunawareofwhat'shappeningaroundthem.1Outsidelifeisshutout.Soareyouoneofthem? Forme;walkingaroundinmyownpersonalbubbleisperfect.2What'sevenbetterwearingearphonesseemstogiveasignaltopeoplewhichsays;I'mnotavailableforchattingatthemoment. Supposeyou'reatworkandabouttomakeanincrediblebreakthrough?butacolleaguesuddenlyturnsup.Atthisprecisemomenttheslightestdisturbancewouldbreakyourconcentration.3OnceagainthosewireshangingfromyourearswouldbesuretogivethatGoaway!signal. 4It'sprobablypartofthegrowingupstagewhentheyjustwanttoignoretheirwholefamily.Whiletheirmothersgivethemlecturesaboutwhytheyshoulddotheir'Yes.Mum.''Problemsolved. Prettysoonnotonlywillwehaveprettycoloredwireshangingfromourears﹣butalsoourbrainswillbedirectlypluggedintosomenewhigh﹣techinstrument.We'llbeinavirtual虚拟的worldcommunicatingwitheveryoneelseorchoosingnottoaswelike.Inthisworldwewillallbepermanentlypluggedin.5Andtheyarechangingoursocialhabitsalongtheway. Intheendthereisathinlinebetweenusingtechnologyasatoolformakinglifebetterandbeingaslavetoit!It'ssostrange﹣suddenlyIdon'tfeellikewearingmyearphonesanymore. A.Ourinstrumentsarechangingquickly. B.Ialsohavewireshangingfrommyears. C.Inthehomesituationteenagerslovethesewires. D.Idon'thavetodealwiththenoisefromtheenvironment. E.AfterallIamlisteningtomyfavouritemusicandwouldrathernotbedisturbed. F.Listeningtomusicthroughearphonesistheperfectwaytoignoresuchinterruptions. G.Theywalkaroundintheirownspaceswiththeirpersonaldigitalnoisereductionsystems.
8分 YearofGiving YesterdayIstartedtheYearofGivingmyfirstdayofayear﹣longjourneyintoexploringtheactofgivingandthemeaningofcharity.IchoseDecember15asthestartingdatewhichmarkedthreeyearssincemymotherdiedfromheartdisease.ShewasoneofthemostgenerouspeoplethatIhaveeverknown.Shealwaysthoughtofothersfirstandcertainlyservesasaninspirationtome. Ihadaratherbusydayyesterdayironic具有讽刺意义的forsomeonewhoisunemployedrightnow.InthemorningIwenttothegymandunsuccessfullygotthephonecallfromtheunemploymentofficeforsomejobsearching.BeforeIknewititwasnoon.Igrabbedaquicklunchandrusheddowntoameeting.OnmywaytoConnecticutIwonderedifIwouldseesomeonethatIwouldfeelforcedtogivemyfirst10USDto.Iwasrunninglateanddecidedtodoitafterwards. AfterthemeetingIhadabouthalfanhourtofindthefirstpersonofmyYearofGiving!IdecidedtocheckoutDuPontCircle.IhadmetaguytherenamedJerryonceandthoughthewouldwillinglyacceptmy$10.Hewasn'ttherebutIdidseeamansittingbyhimselfwholookedreallylonelysoIapproachedhim.NowIhadtofigureoutwhatIwasgoingtosayIthinkIsaidsomethinglikeHicanIsitdownhere?IwouldliketoknowifIcouldgiveyou10?USDHeaskedmetorepeatwhatIhadsaidIdidthenhelookedatmefunnygotupandleft. IthenstartedwalkingsouthwhereIspottedamanstandingbythebusstoponConnecticutAve.Heappearedtobeinhis60s.Idon'tknowwhatdrewmetohimbutIthoughtIwouldmakemysecondattempt.Iwasabitnervousandaskedhimwhichbuscamebythatstop.ThenIexplainedthatIwasstartingayear﹣longprojecttogive10USDtosomeoneeverydayandthatIwantedtogivemy10USDfortodaytohim.ThegentlemanIlaterfoundoutthathisnamewasEdrespondedwithouthesitationthathecouldnotacceptmyofferandthatthereweremanypeoplemoredeservingthemoneythanhim.ThiswasexactlyoneofthethingsthatIhopedwouldhappen.Peoplewouldthinkofothersbeforethemselves. 1TheauthorsetthestartingdateonDecember15to. A.helpthecharity B.rememberhismother C.makeanexplosion D.fulfillawishofhismum 2Intheauthor'sfirstattempttogiveawaythemoney. A.hewasconsideredridiculous B.hehesitatedforalongtime C.hewasforcedtodonatethemoney D.hehadnotimetotakeaction 3Intheauthor'ssecondattemptthegentlemanrefusedhisofferbecause. A.hedidn'tneedother'shelp B.hethoughtmoreforothers C.hedidn'tcareaboutmoney D.hewantedtogetmoremoney 4Wecaninferthattheauthorwasinspiredby. A.truefriendship B.hisownkindness C.generousdonations D.human'sgoodnature
30分Inthediningroomofmygrandfather'shousestoodamassivegrandfatherclock.Mealsinthatdiningroomwerea1forfourgenerationstobecomeone.Thetablewasalways2withfoodfromwonderfulfamilyrecipes食谱allcontaining3asthemainingredient成分.Andalwaysthatgrandfatherclockstoodlikeatrustedoldfamily4sharingourhappiness.AsIwasachildtheoldclock5me.Iwatchedandlistenedtoitduringmeals.I6howatdifferenttimesofthedaythatclockwouldstrikewithawonderful7.Yearafteryeartheclockstruckapartofmy8apartofmyheart.Evenmorewonderfultomewaswhatmygrandfatherdideachday.He9woundthatclockwithaspecialandmagickeywhich10theclocktickingandstriking.Heneverletthatclockwinddownand11.Whenwegrandkidsgotalittleolderheshowedushowto12theclock.SeveraldaysaftermygrandfatherdiedIenteredthediningroomwithtearsflowing13.Theclockstooddesertedly14seemingsmallerandnotasmagnificentasbefore.Icouldn't15tolookatit.Yearslatermygrandmothergavemetheclockandthekey.Theoldhousewasquiet.Iopenedtheclockdoorwithmyshakinghand.Then16reverently虔诚地Ienteredthekeyandwoundtheclock.Itsprangto17.Tick﹣tocktick﹣tocklifeandchimeswere18intothediningroomintohouseandintomy19.Inthemovementofthehandsoftheclockmygrandfather20again.1A.party B.time C.place D.situation2A.filled B.cleared C.spread D.left3A.wine B.surprise C.love D.fish4A.friend B.guard C.solider D.lawyer5A.disappointed B.appealed C.surprised D.comforted6A.questioned B.remembered C.doubted D.wondered7A.sound B.noise C.voice D.ring8A.studies B.opinions C.memories D.brains9A.strangely B.usually C.carefully D.eagerly10A.got B.kept C.prevented D.set11A.break B.fall C.stop D.move12A.wind B.repair C.read D.clean13A.unexpectedly B.gently Cdifficultly D.freely14A.dumb B.alone C.quiet D.noisy15A.help B.bear C.hope D.insist16A.slowly B.quickly C.unwillingly D.naturally17A.feet B.hands C.sense D.life18A.breathed B.sung C.blown D.sent19A.mind B.eyes C.heart D.hands20A.survived B.lived C.showed D.left
在一个不透明的口袋里有红黄蓝三种颜色的小球这些球除颜色外都相同其中有5个红球4个蓝球．若随机摸出一个蓝球的概率为则随机摸出一个黄球的概率为
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库
湘公网安备 43130202000226号