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北京到广州南的高铁长大约是2295km．一列由北京开往广州的高铁8：00出发，10：30到达郑州．北京到郑州的高铁长大约637.5km．按照这样的平均速度，从郑州到广州还需要多少小时？
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京广铁路客运专线简称京广高铁是以客运为主的快速铁路.它北起首都北京南到广州全程近2300km.该客运
一列由北京开往广州的高铁700出发930到达郑州北京到郑州的铁路长大约是700km按照这样的平均速度
下列城市中地球自转线速度由大到小排序正确的是
哈尔滨>北京>南京>广州
北京>哈尔滨>南京>广州
南京>哈尔滨>广州>北京
广州>南京>北京>哈尔滨
北半球夏至日下列城市正午太阳高度由大到小的排列正确的是
广州、北京、哈尔滨、杭州
哈尔滨、北京、杭州、广州
广州、杭州、北京、哈尔滨
哈尔滨、广州、北京、杭州
北京与广州之间的铁路长2294千米一列火车以每小时230千米的速度于8月20日晚上800从广州站开
北京的含水率为11％广州的含水率为15％．一批含水率为10．5％的木材
到北京和广州都正常使用
到北京开裂.到广州吸湿变形
到北京正常使用，到广州吸湿变形
到北京和到广州都要吸湿变形
一列由北京开往武汉的动车从早晨7时出发11时到达安阳北京到安阳的铁路长大约是500km按照这样的平均
长沙到广州的铁路长699千米一列货车从长沙开往广州每小时行69千米这列货车开出1小时后一列客车从广
长沙到广州的铁路长699千米一列货车从长沙开往广州每小时行69千米这列货车开出1小时后一列客车从广
目前我国计划修建京沪高速铁路并预计初期运营速度达到300km/h届时乘坐火车从北京到上海的时间大约是
北京到广州的实际距离大约是1920km在一幅地图上量得这两地间的距离是20cm．这幅地图的比例尺是多
邯郸到北京的路程大约有450km乘坐高铁自邯郸到北京大约需要1.5h1从邯郸至北京高速列车运行的平均
一列普通列车以120千米/小时的速度从广州开往上海经过12小时到达．一列车特快列车从上海到广州10小
一列火车从广州开往北京计划925到达车站途中因暴雨晚点30分钟这列火车到站时间是
9：50
8：55
9：55
一列火车从北京出发到达广州大约需要15小时．火车出发后先按原来的时速匀速行驶8小时后到达武汉由于20
南京到北京的铁路长1166千米．一列快车从南京开往北京一列慢车同时从北京开往南京5.5小时后两车相
一列普通列车的速度为3小时375千米．从广州到北京的路程大约为1255千米请问10小时能从广州到北
在比例尺为19000000的中国地图上量得北京到广州的距离为21.3cm一列火车以每小时142千米的
在物理学里我们把物体位置的变化叫南允到成都的铁路线长大约为219km动车运行的时间大约1.5h则动车
一列火车从北京出发到达广州大约需要15小时.火车出发后先按原来的时速匀速行驶8小时后到达武汉由于20
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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. WhenIwasinGrade8myfamilymovetoSeattlesoIhadtogotoanewschool.BeinginaunfamiliarplaceIfeltlonelyandfrightening.WorsestillsomesubjectsweresodifficulttolearnfromthatIhadnoideahowtoadapttothenewenvironment.Myteachersnoticedmyproblemsbutoftenencouragedme.WiththeirhelpImadesomeprogressesinmylessons.Howeveritwasn'teasymakefriends.Myclassmateshadalreadyknowneachother.Ifoundithardlytofitin.MymothersuggestedthatIchattedwiththem.FollowinghisadviceIsoongotafewgoodfriends.
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Chinahasenteredthecinematicspacerace.WanderingEarththecountry'sfirstblockbustersciencefictionfilmisontracktobeoneofthehighest﹣grossing总收入filmsinChina'shistory. Thefilmhasbroughtinmorethan2bnyuan£232minthesixdayssinceitsreleaseonFebruary5.Sofaritisthehighest﹣grossingfilmreleasedovertheholidayseasonapeaktimefortheChineseboxoffice. WanderingEarthisbasedontheworkofLiuCixintheauthoroftheThree﹣BodyProblemseriesandthefirstChineseauthortowinaHugoaward. WanderingEarthfillsthegapinChinesesciencefictionmovies.ItmeansthatChina'ssciencefictionmovieshaveofficiallysetsailonefanofthefilmwroteonthereviewsiteDouban. ThefilmisseenbysomeasthedawnofChinesesci﹣fi﹣agenrethathaslongbeenledbyHollywood.SeveralotherChinese﹣madesci﹣fifilmsareduetodebut首映thisyearincludingShanghaiFortressaboutanalieninvasionandPathfinderwhichfollowsaspaceshipthathascrashedonadesertedplanet. FrantGwothedirectorofWanderingEarthsaid2019couldberememberedasyearzeroofChinesescience﹣fictionblockbusters.Itisnotjustaboutonesuccessfulmoviebutaboutmultiplefilms. Criticsofthefilmhavepointedouttheplotholesandtheone﹣dimensionalfemalecharacters﹣somethingWanderingEarthshareswithitsHollywoodpeers. Inresponsetoplotcriticismsaboutthenecessityofejecting喷射EarthfromthesolarsystemLiusaidOfcoursewedon'tneedtoescapesoon.That'swhyit'samovieinsteadofareal﹣lifecrisis. 1WanderingEarthhasbecomeChina's. A.firstblockbustersci﹣fifilm B.highest﹣grossingfilm C.onlysci﹣fifilmthisyear D.firstsci﹣fifilmtowinanaward 2Whatisthefan'sattitudetowardthefilmaccordingtoParagraph4? A.Doubtful. B.Negative. C.Praiseful. D.Uncaring. 3Whichaspectdothecriticsthinkisashortcomingofthefilm? A.Thetheory. B.Theending. C.Thespecialeffects. D.Theplotholes.
Haveyoueverusedanylanguagelearningapps?Ifyouwanttolearnalanguageandspeakitrightawaymodernizeyourlearningstyleandadoptanapp.Itdoesn'tcostmuchbutit'sworthalot.1 ●Learnanywhereandanytime PersonallyIlovetoreviewmyvocabularyquietlyinmybedbeforesleepusingalanguagelearningapp.2Ofcourseit'salsopossibletolearnalanguagewithabookbutit'ssomuchmoreentertainingwhenyouareusingalanguagelearningapp! ●Neverwastetimeagain 3Moreoftenthannotwewillgetreallyannoyedorevenstressedwhentimeiswasted.Howeverwhenusingalanguagelearningapptimeseemstogobyquickly.Wecantaketheopportunitytoreviewandplayalittlewhilewehavetowaitaround. ●4 Haveyouevertakenupacourseatnight?IhavebutIfoundithardtocompleteitbecausethereweremanyrestrictions.Iwasrequiredtoattendclassestwiceaweekonafixedschedule.Butwhenwestudyonourownwithalanguagelearningappwecanstudyatourownpace. ●Saveyourmoney Mostlanguageschoolshaven'tevolvedtomeettheneedsofmodemsociety.Andthat'sbeforewe'veevenbeguntotalkaboutthepricewhichisoftenquiteunaffordable.5Butthebenefitsarehugeofferingyouthefreedomandindependencetolearnatverylittleexpense. A.Quickenyourprogress B.Workwithoutrestrictions C.Mobileappscanhandlecomplexapplications D.Learningwiththehelpofanappdoesn'tcostmuchatall E.WhenItravelIalsouseittolistentosomepodcasts播客 F.Weallhavetheexperienceofwaitingforanappointmentorabus G.Herearesomebenefitsoflanguagelearningappsusedonsmartphones
在科技节活动中有一项挑战项目如图所示ABCD是装满了某一种材料细盐铁粉米粉中的一种的四个不透明的轻质密闭容器要求在不打开容器的前提下将其中装有相同材料的两个容器挑选出来提供的器材有 ①与密闭容器同样的空容器各一个 ②天平和水按下列步骤在空白处填上适当的内容． 1用天平分别测出图中四个密闭容器的质量mAmBmCmD 2 3若满足关系式用测量的物理量表示则AC两容器中所装材料相同．
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假定你是李华你校足球选修课的外教Daniel请同学提供教学反馈请你用英语给他写一邮件.内容包括 1.你的感受2.你的建议.3.感谢与祝愿. 注意1.词数100左右2.可以适当增加细节以使行文连贯. DearDaniel Yours LiHua
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Chinahasbuiltahigh﹣speedpassengerrailnetworkinrecent1yearandwillcontinuetoexpandit.Bytheendof2018China'srailwaymileage里程2reach131000kilometersof329000kilometerswerehigh﹣speedrail.Thisaccountedfor2/3oftheworld'stotalhigh﹣speedrailtracksmakingChina'shigh﹣speedrailsystemtheworld's4largehigh﹣speedrailnetwork. China'shigh﹣speedtrainsaresimilar5thoseofFrance'sTGVGerman'sICEandJapan'sShinkansen.Thefasttrainswithatopspeedof250﹣350km/h6callCRHChinaRailwayHigh﹣speed. IfyouwanttotravelaroundChinathehigh﹣speedtrainswillbeyouridealchoicesincetheyarecleancomfortable7modem.UnlikeontheconventionaltrainsinChinanobodyisallowed8smokeonhigh﹣speedtrainsnotevenbetweencarriages. Theseatsareasgoodasthoseontheplaneorevenbetter.Mosthigh﹣speedrailticketshavecorresponding对应的seatsandonly9smallnumberofstandingticketsaresometimessoldonlimitedtrains.There'sneveracrowdofpeoplesittingintheaisles.TheticketpricesforChinahigh﹣speedtrainsarereasonableandonmostroutesthefrequencyofdepartureisveryhighsopeoplecanbuytickets10convenient.
DirectionsReadthefollowingpassage.Summarizethemainideaandthemainpointsofthepassageinnomorethan60words.Useyourownwordsasfaraspossible.Afteryouhavealongdayatschoolorworkgettingabitofshut﹣eyeonthewayhomeissometimesjustwhatthedoctorordered.Butsleepingtoolongandendingupwaypastyourdestinationisarealpossibility.AccordingtoresearchfromsleepspecialistsintheUSthereareseveralpossibleexplanationsforbeingabletonapduringatrainorbusrideandstillgetoffattherightstop.Onetheorystatesthatsomepeoplehaveestablishedsleeppatternthatallowthemtosleepandwakeupatpreciselythesametimeeachday.Thatmeanstheirbodyknowswhentowakeupandgetoffthetrain.Anothertheoryisthatpeoplearemorelikelytorecognizethenameoftheirstopsotheirbrainwakesthemupwhentheyhearitannounced.Alternativelythosewhocaneffectivelysleeponthetrainmightactuallybewakingupateverystopbutnotlongenoughtobecomeconsciousuntiltheyknowthey'rereachedtherightplace.Theseshortnapsmightworkforthosewhoarereallyexhaustedforevenabriefresthasthebenefitofreducingstressandhelpingyourelaxalittle.ButifyouaretravellingreallyfareachdaychancesarethatyouwillreachrapideyemovementREMsleepcycles.AccordingtoDr.MarcLeaveywhohasstudiedthisskill'You'remorelikelytobetriedordisorientedwhenyouwakeupfromthesedreamssoifyou'resleepingforlongerthan20minutesyoumayfindithardertowakeupoutofthisdreamstate.Ifyou'reinadeepREMsleepyou'remorelikelytomissyourstoporsleepthroughit.'Noteveryonecandoitbutsomepeoplecanruntheirsleepcyclelikeclockworkandtakeanaponpublictransportation.
不管意图如何表扬对学生有着积极的影响使他们能作出更多的努力并且更有信心地面对将来的挑战.regardless .
在综合实践活动中科技小组设计了一个由压敏电阻控制的报警电路如图所示电源电压恒为18V电阻箱最大阻值为999.9Ω．报警器电阻不计通过的电流达到或超过10mA会报警超过20mA会损坏．压敏电阻Rx在压力不超过800N的前提下其阻值随压力F的变化规律如下表所示． 1为不损坏元件报警电路允许消耗的最大功率是多少 2在压敏电阻Rx所受压力不超过800N的前提下报警电路所选滑动变阻器的最大阻值不得小于多少 3现要求压敏电阻受到的压力达到或超过200N时电路报警按照下列步骤调试此报警电路 ①电路接通前滑动变阻器滑片P置于b端根据实验要求应将电阻箱调到一定的阻值这一阻值为Ω ②将开关向端填数字闭合调节直至 ③保持将开关向另一端闭合报警电路即可正常使用． 4对3中已调试好的报警电路现要求压敏电阻受到的压力达到或超过700N时电路报警若电源电压可调其它条件不变则将电源电压调为V即可．
有两只阻值未知的定值电阻R1R2． 1图甲是用伏安法测R1阻值的实物电路电源电压恒为3V滑动变阻器最大阻值为10Ω． ①甲图中有一根导线连接错误请在该导线上画“×”并在图上改正所画的导线用实线且不能交叉． ②改正电路后闭合开关发现无论怎样移动滑动变阻器滑片两电表均无示数其原因可能是填字母． A．滑动变阻器断路B．R1断路C．R1短路 ③故障排除后正确操作实验器材移动滑片当电压表示数为1.2V时电流表示数如图乙所示则待测电阻R1＝Ω． ④现有以下三组数据分析可知不可能通过以上实验获得的数据有填序号． 2图丙是能巧测R2阻值的实验电路图．图中R为电阻箱R0为定值电阻阻值未知．要求仅利用电阻箱读数表达R2的阻值请在空白处填上适当内容． ①将开关接a调节电阻箱和滑动变阻器滑片P至适当位置记下 ②将开关接b调节保持不变记下 ③则R2＝．
Nooneknowswhatthefuturewilllooklike.Newtechnologyandclimatechangemightmaketheworldmoredifferentthanwecanpossiblyimagine.Sowehadbetterkeepanopenmindandhopeforthebest. Wehavenoideawhatthejobmarketwilllooklikein2050.Itisgenerallyagreedthatmachinelearningandroboticswillchangealmosteverylineofwork﹣fromproducingyoghurttoteachingyoga.Howeverthereareconflictingviewsaboutthenatureofthechangeanditsurgency.Somebelievethatwithinameredecadeortwobillionsofpeoplewillbecomeeconomicallyredundant多余的.Othersmaintainthateveninthelongrunautomationwillkeepcreatingnewjobsandgreaterprosperityforall. Soareweonanedgeofaterrifyingsuddenchangeoraresuchforecastsyetanotherexampleofill﹣foundedLudditehysteria勒德分子的歇斯底里?Itishardtosay.Fearsthatautomationwillcreatemassiveunemploymentgobacktothenineteenthcenturyandsofartheyhavenevermaterialized.SincethebeginningoftheIndustrialRevolutionforeveryjoblosttoamachineatleastonenewjobwascreatedandtheaveragestandardoflivinghasincreaseddramatically. Yettherearegoodreasonstothinkthatthistimeitisdifferentandthatmachinelearningwillbearealgamechanger.Humanshavetwotypesofabilities﹣physicalandcognitive认知的.Inthepastmachinescompetedwithhumansmainlyinrawphysicalabilitieswhilehumansstillhadagreatadvantageovermachinesincognition.Henceasmanualjobsinagricultureandindustrywereautomatednewservicejobsemergedthatrequiredthekindofcognitiveskillsonlyhumanspossessedlearninganalysingcommunicatingandaboveallunderstandinghumanemotions.HoweverAIisnowbeginningtooutperformhumansinmoreandmoreoftheseskillsincludingintheunderstandingofhumanemotions. Wedon'tknowofanythirdfieldofactivity﹣beyondthephysicalandthecognitive﹣wherehumanswillalwaysmaintainasecureadvantage.ItiscrucialtorealizethattheAIrevolutionisnotjustaboutcomputersgettingfasterandsmarter.Itisfueledbybreakthroughsinthelifesciencesandthesocialsciencesaswell.Thebetterweunderstandthebiochemicalmechanismsthatsupporthumanemotionsdesiresandchoicesthebettercomputerscanbecomeinanalyzinghumanbehaviorpredictinghumandecisionsandreplacinghumandriversbankersandlawyers. Inthelastfewdecadesresearchinneuroscienceandbehaviouraleconomicsallowedscientiststogainamuchbetterunderstandingofhowhumansmakedecisions.Itturnedoutthatourchoicesofeverythingfromfoodtomatesresultnotfromsomemysteriousfreewillbutratherfrombillionsofneuronscalculatingprobabilitieswithinasplitsecond.Boasting‘humanintuition'直觉isactuallypatternrecognition. 1Thesecondparagraphtellsusabout. A.predictionsabouttheroleofmachinelearninginfuturejobmarket B.thespeedatwhichroboticswilltaketheplaceofhumanbeings C.theurgencyofcreatingnewjobswiththehelpofautomation D.thenatureofapplyingnewtechnologytoeverylineofwork 2Theunderlinedexpressionill﹣foundedinParagraph3isclosestinmeaningto. A.unidentified B.badly﹣managed C.unproven D.ill﹣intended 3WhichofthefollowingisTRUEaccordingtothepassage? A.Lackofjobsecuritymightforcepeopletopickupmachinelearning. B.ThereispossibilitythatAIcanperformaconsultingroleasapsychologist. C.Theuseofautomationwillmakehumansmoreneededthaneverbefore. D.Arealgamechangerlikesinmakingcomputersbecomefasterandsmarter. 4Whatcanbeconcludedfromthepassage? A.Atrevolutionissimilartotheindustrialrevolutionincausingunemployment. B.It'scrucialthathumansmaintainanadvantageinthethirdfieldofactivity. C.Theprocessofhumandecisioniscontrolledbyfreewillratherthanneurons. D.Thenatureofpreferenceatfirstsightistheresultofrecognizingpatterns.
TheLife﹣changingAntiqueNavajoBlanket ACaliforniamanandhisfamilywentfromragstorichesafterdiscoveringthattheblanketgiventohimbyhisgrandmotherwasworthasmallfortune.LorenKrylzerwaslivinginasmallhutandbarelygettingbyonhisdisabilitypayments.OnedayhehappenedtobewatchingAntiquesRoadshowonTVwhenhelearnedthattheforgottenoldblanketinhisclosetmightbevaluable.TheKrytzerfamilyheirloom传__turnedouttobeanantique古老的Novajoweavingfromthe19thcenturythatfetchedUS＄1.5millionatauction拍卖会. Krytzer'sblanketwasprizedformuchmorethanitsantiquity.AmongNativeAmericantribesTheNavajoarerecognizedasthemostskillfulweaversofblanketsandrugs.Theweavingstyleischaracterizedbyvividvariedpatternsandexceptionaldurability.Fromshearingthesheepspinningpreparinganddyeingthewooltotheactualweavingprocessittakesaround345hourstocreateoneblanket. WomentraditionallywoveNavajoblanketswhilemenbuilttheweavingdevices.TothisdayNavajopeoplestillmakehighqualityblanketsandrugstosell.TheybelievethatsinceonlyGodisperfecttheircreationsshouldhavesomeimperfection.AnotherNavajobeliefisthattheirsoulsaresewnintoeveryweavingsotheyintentionallyincludeahiddenloosethreadintoeachpiece.Thisensuresthatisisn'ttooperfectandtheirsoulscanstillescapeintotheafterlife. TheKrylzersalsohadaloosethreadontheirroadtorichesthatallowedthemtoescapethetrapoffinancialruin.Inanunfortunatetwistthefamily'slife﹣changingwindfall意外之财camewithahugetaxbillfromthegovernmentandalotofimploringrelatives.AftertakingafamilyvacationinMexicobuyinganewsportscarandacoupleofrealestatepurchasesKrytzerlosthisdisabilitypaymentsandnowgetbigbillsforpropertytaxesandinsuranceinstead.Ironicallythefamilydecidedtorelocatetoalessexpensivestatetosavemoney. 1HowdidtheKrytzerfamilygofromragetoriches? A.Afamilymemberpurchasedawinninglotteryticket. B.LorenwasinvitedtohaveaninterviewonaTVshow. C.Loren'sdisabilitypaymentswereunexpectedlyincreased. D.Lorenauctionedoffablankethisgrandmothergavehim. 2AloosethreadwoveninaNavajoblanketindicatesthat. A.God'screationisalsoimperfect B.peoplecanexitfromhorriblesituations C.itsownerissuretohaveaneverlastinglife D.theblanketisreallymadebyhand 3Whydidthefamilyfinallydecidetomovetoanotherstate? A.Toreducethecostofliving. B.Tobehiddenfromtheirrelatives. C.Tochangeforabetterenvironment. D.Toapplyfordisabilitypaymentsagain. 4AccordingtothearticlewhichofthefollowingstatementisTRUE? A.Navajoblanketshavenicepatternsbutdon'tlastlong. B.LorenKrytzermademillionsofdollarsfromdisability. C.Weavingablanketinvolvesmanyprocessesandskills. D.Loren'slifewentfrombadtoworsebecauseofthewindfall.
Markhavehurried.Afterdrivingattopspeed.hearrivedhalfanhourearly.A.needn't B.wouldn't C.mustn't D.couldn't
用橡皮做以下几个小实验． 1用刻度尺测量图中橡皮的长度为cm． 2手用力压住橡皮更易擦去写错的字应用的物理知识是越大越大． 3用细线吊住橡皮将一本物理课本放在课桌面上若发现现象则可以判断课桌面是水平的．
Theoddsarehighthatyou'veseenabeautypageant选美比赛ortwoinyourlife.Theyareamongthemostattendedandviewedeventsintheworld.Despitenumerousdifferentopinionsbeautypageantscontinuetonotonly1butalsobecomemorepopular. MissWorldMissUniverseMissInternationalandMissEarthareknownastheBigFourbeautypageantsandallofthemcontinuetothisday.Thesecompetitions2youngwomenontheirphysicalattractivenessofcoursebuttheyalsoarejudgedontheirpersonalityintelligencetalentandresponsestointerview﹣basedquestions.Theeventualwinnersreceiveprizesincludingcashscholarshipsclothesbeautyqueencrownsandofcoursethetitleoftheeventforoneyear. Alltheseawardsdonotcomecheapfortheyoungladies.Theyhavedutiestofulfillwhileholdingtheirtitles.Beautyqueensoftenappearatfunctionstoraisesocialawarenessaboutenvironmentalandsocialissuessuchasnature3racialorgenderdiscriminationanddiseaseprevention.Byprojectingtheimageofawell﹣educatedrespectablecharacter4withasuccessfulpersonalityeverybeautypageantwinnerisseenasarolemodelandnotjustforyounggirlsalone. Somebeautycontests5menratherthanwomen.SimilartotheirfemininecounterpartsmenenterMisterGlobalMisterInternationalandMisterWorldfortheirlooksstyleandtalent.Thesecontestsshouldnotbe6withtheMisterUniversecontestwhichisanannualbodybuildingcompetition. Thereareotherstrangeand7pageantsallovertheworldthatcelebrateeverythingfrombeingoldtobeingpregnant. Beautycontestswhetherorganizedwithnoble8orjustforfunhaveattractedcriticismsincetheywerefirstheld.Somecriticsobjecttothefocusonphysicalbeautyespeciallyemphasisonacertainstatureandbodyshape.Furthertheypointoutthatsomeparticipantswillactuallyhavethemselvesthroughdietingorplasticsurgerytoachievetheperfectappearance.Despitethesecomplaintsbeautymaybeonlyskindeepbut9itandcompetingforthegloryofbeingthefairestofthemallholdsatimelessanduniversal410
ForyearsdecadesinfactI'vepuzzledovertheresponsemostpeoplehavewhenItellthemImostlytravelalone. You'resobrave! WhyisitthatawomantravellingaloneasIhaveoftendoneformonthsatatimeisperceivedtobebravewhereasmenwhotravelaloneareentirelyunremarkable? Youareonlybravewhenyouareafraidofsomethingbutstilldoitanyway.Ihaveneverbeenafraidoftravellingalone. ThefirsttimeItravelledalonewaswhenIwas19.1wasduetotravelinEuropewithafriendattheendofthesummer.SheannouncedbylettertwodaysbeforeourdeparturethatshewouldbeleavingmehalfwayatVienna.ItwastoolatebythentoropeinanotherfriendsoitwaseithertogohomeafterViennaorkeepgoingbymyself.Ikeptgoing.Igotontrainsbymyselfcheckedintohostelsbymyselfandfoundmywayaroundbymyself.ItwasweirdatfirstbutlaterIstoppedworryingaboutit. WhenIgotbacktoIrelandafterthattripIfeltproudofmyself.IhaddonesomethingIhadassumedwouldbehardandithadturnedouttobenothardatall. ThatwasthreedecadesagoandsincethenIhavetravelledallovertheworldusuallyonmyown.IstilldowhatIdidthenwhichistokeepadiary.ThegreatestgiftofsolotravelhasbeenthoseI'vemetalongtheway.ImayhavesetoffaloneeachtimebutI'veencounteredmanypeoplewhobecameimportanttome.ImetmyhusbandinKathmanduNepal.ImetlifelongfriendsinAustraliaPolandHungaryTurkeyIndiaIndonesiaandmanyotherplaces. 1Whatmakestheauthorpuzzledwhenshetellspeopleofherexperience? A.People'sdisbelief. B.People'sresponse. C.People'sapproval. D.People'scriticism. 2Whatdoestheauthorsayaboutherfirsttimetotravelalone? A.Itwasatripbydesign. B.Shehadtochoosetogobyherself. C.Itwasharderthanexpected. D.Shesetoffallalone. 3Whatdotheunderlinedwordssolotravelinthelastparagraphmean? A.GroupTravel. B.Travellingwithfriends. C.Travellingalone. D.Travellingwithmusic. 4Howhastheauthorbenefitedfromhertravel? A.Shehasovercomeherfearoftravellingalone. B.Shehaswrittenacoupleofbooks. C.Shehasreceivedagreatmanygifts. D.Shehasmetmanypeoplealltheway.
NileCruiseinEgypt It'shardtobeatEgyptforitsmixofheatandcultureinDecember.Aseven—nightcruiseonboardatraditional19th—century—stylewoodenluxurysailingvesselwhichsleepsupto12andcruisesbetweenLuxorandAswancostsfrom£775perheadfullboarddepartingonDecember11throughBales08450570600www.balesworldwide.com. ChristmasMarketsinCologne PerhapsthebestofnorthernEurope'smanyChristmasmarketsisCologne—therearesevenseparatethemedmarketswhichstartopeningthisweek.Cologneisalsooneoftheeasiestplacestogettobytrain.EurostarconnectionsfromLondonviaBrusselstakejustunderfourhoursandreturnticketsareavailablethiswinterfrom£8908432186186www.eurostar.com.FordetailsofaccommodationandmarketsseeCologneTourismwww.cologne—tourism.com. SkiinginValThorens IfyouwanttobesureofsnowforskiingintheAlpsbeforeChristmasyouneedtoheadhigh—whereyouwillgettheadvantageofquietslopesandlowprices.Aweek'sstayatChaletElianecostsfrom£399chaletboardthroughCrystalSki08712312256www.crystalski.co.ukormuchmoreluxuriousaweek'shalfboardatthefive—starhotelcostsfrom£1195throughCrystalFinest08719710364www.crystalfinest.co.uk.BothpackagesarefordeparturesonDecember13. JapaneseOnsen SnowmonkeyswarmingthemselvesinthehotspringsatYudanakamakeanendearingsight.Assnowflakesfallyoumaybetemptedtoclimbinyourselfperhapsnotthesamepoolthough.ExperiencethisovernightatatempleandaryokanandseeTokyoandHiroshimatravelingbybullettrainonthe14—nightJapanUnmaskedtour£1600excludingflights01173144620www.insidejapantours.com. 1Theadvertisementismainlyaimedatthosewho. A.studyabroad B.oftentravelaround C.wanttogoshoppingbeforeChristmas D.arefondofskiinginwinter 2Marylovestheideaofshoppingduringhertrip.Shewillprobablycontactbycalling. A.08432186186 B.08450570600 C.08712312256 D.01173144620 3Ifyouwanttogosightseeingbywateryouhavetobook. A.beforeDecember11 B.beforeDecember13 C.beforeChristmas D.afterChristmas 4Ifyouenjoywatchinganimalsbathingwhichwebsitewillyouclickforfurtherinformation? A.www.crystalfinest.co.uk B.www.cologne—tourism.com C.www.insidejapantours.com D.www.balesworldwide.com 5Fromthepassagewecanlearnthat. A.skiinginValThorensishighinprice B.Eurostaristhemostbeautifulareaofthecity C.atouristhastowarmhimselfinthehotspringwithmonkeys D.aLondonerwillspendlessthan4hourstravellingtoColognebytrain
作为一名成年人你一旦签下协议就应该承担履行承诺的责任.assume .
Oh!Theflowercan'tbesaved.Iftheflowerhadbeenwatereditnow.A.wouldn'tbedying B.isdead C.hadbeendead D.willnotdie
—Didyouforgetyourpromisedear? —Ihavefinishedmyhomeworkontimemom. A.Excuseme. B.Surely. C.Whynot? D.HowcouldI?
WalkOutoftheComfortZoneandTryNewThings Formosthighschoolstudentsfreeperiodsareuseless.FromwhatIhaveseenfewdohomeworkinsteadmanyareontheirphonesandtalkingmakingitimpossibleforthosewhoactuallywanttodoworktocompleteany.AsaseniornextyearIthinkextraperiodsshouldbeusedtotakeoptionalsubjects. Ourschooloffersmanyclasses.Nowisthetimetoexperimentindifferentfieldsofstudy.Wewillneverknowifweareinterestedortalentedinasubjectifwedon'ttryit. Inmy8thgradeIwastoldthatIhadtotakeanartclassasagraduationrequirementsointhe9thgradeItookStudioandArt.OneoftheprojectswastobuildaclaypotbutIbuiltmineincorrectlysoitbrokeinthekiln窑.IfoundoutthatIhavenoartisticabilityatallandnowIknowforsurethatIdonotwanttobeanartist.Howevertheclasswasoneofmyfavoritesthatyear.Iwasabletotrynewactivitiesandtestmyability. Walkoutofourcomfortzoneandtrynewthings!Collegeiswhenweshouldfocusonaspecificmajorbuthighschooliswhenwehavetofigureitout. Halfofallcollegestudentschangetheirmajoratsomepoint.Bydoingthathundredsofdollarsarewastedonclassesthattheywouldhaveneverneededtotake.Souseourextraperiodstofindoutwhatwewanttodoincollege.Theclasseswechoosecanimpactusinfuture.Takingoptionalsubjectswillenrichourmind.Itwillalsoshowcollegeswearediversestudents. 1Howshouldweuseourextraperiodsintheauthor'sopinion?nomorethan10words 2Whydoestheauthorthinkweshouldexperimentindifferentfieldsofstudy?nomorethan20words 3Whydidtheclaypotshowtheauthor'slackofartisticability?nomorethan10words 4Explaintheunderlinedsentence.nomorethan20wordsFreeperiodsshouldbeusedtolearnnewsubjectsthroughoptionalclassesinsteadoftalkingonphones. OrMakegooduseoffreeperiodsandtakeoptionalclassestolearnnewsubjects. 5Accordingtotheauthorhowwilltakingoptionalsubjectsimpactusinthefuture?nomorethan15words
Thesystemhasbeendesignedtogivestudentsquickandeasytothedigitalresources资源ofthelibrary.A.access B.passage C.way D.approach
在打靶练习中发射50发子弹有两发没有命中命中率为
StanfordUniversityhasbegunaninvestigationfollowingclaimsthatsomeofitsstaffknewlongagoofChinesescientistHeJiankui'splanstocreatetheworld'sfirstgene﹣editedbabies. AuniversityofficialsaidareviewwasunderwayofinteractionssomefacultymembershadwithHewhowaseducatedatStanford.SeveralprofessorsincludingHe'sformerresearchadviserhavesaidthattheykneworstronglysuspectedthatHewantedtotrygeneeditingonembryos胚胎. TheChinesegeneticscientistpostedavideoonYouTubeinNovember2018.Heclaimedinthevideothathehadusedagene﹣editingtoolCrispr﹣Cas9tomodify修改aparticulargeneintwoembryosbeforetheywereplacedintheirmother'swomb子宫.HewhoworksinalabinthesouthernChinesecityofShenzhensaidthetwingirlsknownasLuluandNanawerebornusinganeggthatwasmodified.HefocusedonHIVinfectionpreventionbecausethefatherisHIVpositive.NowthefatherhasareasontoliveareasontoworkhehasapurposeHesaid. EditingthegenesofembryoswhichcanchangeothergenesisbannedinmanycountriesbecauseDNAchangesarepassedtofuturegenerationsandcouldhaveunforeseeneffectsontheentiregenepool. China'snationalhealthcommissionorderedofficialstoseriouslyinvestigateHe'sclaims.Shenzhen'shealthandfamilyplanningcommissionsaiditwasinvestigatingthereviewprocessaroundHe'swork. ResearchinstitutionsconnectedtoHehavedistancedthemselvesfromhim.ThisresearchworkwascarriedoutbyProfessorHeJiankuioutsideoftheschoolsaidtheSouthernUniversityofScienceandTechnologyinShenzhen.Itcalledhisresearchaseriousviolationofacademicethics道德. 1WhatdidHeJiankuiclaiminthevideopostedonYouTube? A.Hewaswrongintryinggeneeditingonembryos. B.Hepreventedthetwinsfromdevelopingcancer. C.HemodifiedageneinLuluandNana'sembryos. D.HewasinfluencedbyhisresearchadviserinStanford. 2Whyisgeneeditingofembryosbannedinmanycountries? A.TheeffectofDNAchangesonthegenepoolisunforeseeable. B.Itcausesdisabilitiestothegene﹣editedbabies. C.Thefuturegenerationswillrelyongeneediting. D.Itwillaffectallthehealthygenesoftheembryos. 3HowdidtheuniversityinShenzhenreacttoHe'svideoclaim? A.Itorderedinvestigationstobeconducted. B.Itcalledtheincidentabigshameforthenation. C.ItdeclarednotrelatedtoHe'sresearch. D.Itkeptadistancefromthemedia. 4Whichcanbeasuitabletitleforthetext? A.TheUSABansGene﹣editing B.WhataretheEthicsofMedicalTreatment? C.ScientistsFindtheIdeaofGene﹣editedBabiesCrazy D.StanfordInvestigatesLinkstoScientistinGeneEditing
inmylifeimpressedmesodeeplyasmyfirstvisittothePalaceMuseum.A.Anything B.Nothing C.Everything D.Something
WhenJohnwasgrowingupotherkidsfeltsorryforhim.Hisparentsalwayshadhimweedingthegardencarryingoutthegarbageanddeliveringnewspapers.ButwhenJohnreachedadulthoodhewasbetteroffthanhischildhoodplaymates.Hehadmorejobsatisfactionabettermarriageandwashealthier.Mostofallhewashappier.Farhappier. Thesearethefindingsofa40—yearstudythatfollowedthelivesof456teenageboysfromBoston.Thestudyshowedthatthosewhohadworkedasboysenjoyedhappierandmoreproductivelivesthanthosewhohadnot.Boyswhoworkedinthehomeorcommunitygainedcompetence能力andcametofeeltheywereworthwhilemembersofsocietysaidGeorgeVaillantthepsychologist心理学家whomadethediscovery.Andbecausetheyfeltgoodaboutthemselvesothersfeltgoodaboutthem. Vaillant'sstudyfollowedthesemalesingreatdetail.Interviewswererepeatedatages2531and47.UnderVaillanttheresearcherscomparedthemen'smental—healthscoreswiththeirboyhood—activityscoreswiththeirboyhood—activityscores.Pointswereawardedforpart—timejobshouseworkeffortinschoolandabilitytodealwithproblems. Thelinkbetweenwhatthemenhaddoneasboysandhowtheyturnedoutasadultswassurprisinglysharp.Thosewhohaddonethemostboyhoodactivitiesweretwiceaslikelytohavewarmrelationswithawidevarietyofpeoplefivetimesaslikelytobewellpaidand16timeslesslikelytohavebeenunemployed.TheresearchersalsofoundthatIQandfamilysocialandeconomicclassmadenorealdifferenceinhowtheboysturnedout.Working————atanyage————isimportant.Childhoodactivitieshelpachilddevelopresponsibilityindependenceconfidenceandcompetence———theunderpinnings基础ofemotionalhealth.Theyalsohelphimunderstandthatpeoplemustcooperateandworktowardcommongoals.Themostcompetentadultsarethosewhoknowhowtodothis.Yetworkisn'teverything.AsTolstoyoncesaidOnecanlivemagnificentlyinthisworldifoneknowshowtoworkandhowtolovetoworkforthepersononelovesandtoloveone'swork. 1WhatdoweknowaboutJohn? A.Heenjoyedhiscareerandmarriage. B.Hehadfewchildhoodplaymates. C.Hereceivedlittlelovefromhisfamily. D.Hewasenviedbyothersinhischildhood. 2Vaillant'swordsinParagraph2serveas. A.adescriptionofpersonalvaluesandsocialvalues B.ananalysisofhowworkwasrelatedtocompetence C.anexampleforparents'expectationsoftheirchildren D.anexplanationwhysomeboysgrewintohappymen 3Vaillant'steamobtainedtheirfindingsby. A.recordingtheboys'effortinschool B.evaluatingthemen'smentalhealth C.comparingdifferentsetsofscores D.measuringthemen'sproblemsolvingability 4WhatdoestheunderlinedwordsharpprobablymeaninParagraph4? A.Quicktoreact B.Havingathinedge C.Clearanddefinite D.suddenandrapid 5Whatcanbeinferredfromthelastparagraph? A.Competentadultsknowmoreaboutlovethanwork. B.Emotionalhealthisessentialtoawonderfuladultlife. C.Lovebringsmorejoytopeoplethanworkdoes. D.Independenceisthekeytoone'ssuccess.
SoonafterSusansettleddownonaflighttoIllinoisthispasMaysheglancedoveratherseatmate.Hewasinhis60s1brightyellowsunglassesandwasbusy2amessage.Thescreenofthephonewasbigand3makingiteasyforSusanto4whathewastappingoutHeyBabeI'msettingnexttoasmellfatty. ItremindedSusanofthe5thingsshethoughtaboutherselfonadailybasis.6tearsstreameddownhercheeks. 7arowbehindthemwasDavida35﹣year﹣oldbarmanager.Hecouldseetheman's8onthephonetoo﹣andhecouldseeSusan.I9herlookingathisphoneDavidtoldwsmv.com.Iwassicktomystomach.Icouldnothavethisguysittingnexttoherthiswholeflightandhaveherthinkinghe's10her. InaninstantDavid11hisseatbeltandstoodup.HeyIneedtotalktoyouDavidtoldtheman.Weare12seats!Now!Whenthemanasked13DavidsaidYou'retextingaboutherandI'mnot14that.Themanhandto15quickly.DavidtookhisplacenexttoSusanandwassooncheeringuphisnew16.Hetoldmenottolettheguy17meandthateverythingwasgoingtobefineSusanwroteinaFacebookpostaftertheflight.Andhewasright.SheandDavidspenttherestoftheflight18likeoldfriends. Withher19inhumanityrestored恢复Susan20onFacebookTheflightattendanttoldhimthathewasherhero.Hewasn'therhero﹣hewasmine. 1A.wore B.removed C.polished D.adjusted 2A.whispering B.posting C.sending D.copying 3A.narrow B.bright C.blank D.flat 4A.guess B.predict C.recall D.read 5A.comfortable B.ridiculous C.negative D.positive 6A.Regularly B.Soon C.Anyway D.Constantly 7A.Sitting B.Hiding C.Standing D.Lying 8A.picture B.passage C.message D.game 9A.heard B.left C.stopped D.noticed 10A.makingfunof B.relyingon C.givingup D.lookingafter 11A.found B.unfastened C.tightened D.caught 12A.booking B.choosing C.switching D.taking 13A.where B.when C.how D.why 14A.accepting B.doubting C.knowing D.judging 15A.refuse B.answer C.agree D.explain 16A.customer B.seatmate C.manager D.employee 17A.abandon B.control C.cheat D.annoy 18A.chatting B.working C.cheering D.playing 19A.worry B.faith C.knowledge D.view 20A.complained B.wrote C.warned D.signe
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