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如图是用杠杆撬石头的示意图,C是支点,当用力压杠杆的A端时,杠杆绕C点转动,另一端B向上翘起,石头就被撬动.现有一块石头,要使其滚动,杠杆的B端必须向上翘起10cm,已知杠杆的动力臂AC与阻力臂BC...
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如图所示用一杠杆撬一块石头杠杆上A.点是动力的作用点动力可以向上也可以向下还可以朝其他方向.a当动力
如图8所示在用杠杆撬石头的过程中该杠杆属于_____________杠杆选填省力费力或既不省力也不费
如图是用杠杆撬石头的示意图C是支点当用力压杠杆的A端时杠杆绕C点转动另一端B向上翘起石头就被撬动.现
100cm
60cm
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10cm
如图在用杠杠撬石头的过程中该杠杆属于▲杠杆.在用力方向不变的情况下该人想用更小的力撬起石头那么他的手
如图所示用一根硬棒撬一块石头棒的上端A.是动力作用点1在图上标出当动力方向向上时杠杆的支点a当动力方
如图8所示在用杠杆撬石头的过程中该杠杆属于_____________杠杆选填省力费力或既不省力也不费
图5是环卫工人用的一种垃圾夹的结构示意图拉绳的一端固定在手把上另一端穿过空心管杆与两夹爪的一端相连当
省力杠杆,费力杠杆
费力杠杆,省力杠杆
省力杠杆,省力杠杆
费力杠杆,费力杠杆
用杠杆撬石头时石头距支点的距离与手距支点的距离之比为15若撬起石头时杠杆向上翘起10厘米则手一端应向
右图是环卫工人用的一种垃圾夹的结构示意图拉绳的一端固定在手把上另一端穿过空心管杆与两夹爪的一端相连当
费力杠杆,省力杠
省力杠杆,费力杠杆
省力杠杆,省力杠杆
费力杠杆,费力杠杆
如图是用杠杆撬石头的示意图C是支点当用力压杠杆的A端时杠杆绕C点转动另一端B向上翘起石头就被撬动.现
100cm
60cm
50cm
10cm
图是用杠杆吊重物的示意图请画出拉力F1对支点O的力臂并画出挂重物的细绳对杠杆的拉力的示意图
如图在用杠杠撬石头的过程中该杠杆属于杠杆.在用力方向不变的情况下该人想用更小的力撬起石头那么他的手应
如图13轻质杠杆的支点在0点在杠杆A点用力F1竖直向上拉.请画出拉力F1的力臂和作用在杠杆上阻力F2
1请在图中画出用此杠杆提升物体时的最小力的示意图O.为支点2如图所示O.为杠杆OAB的支点请画出物体
如图是用杠杆撬石头的示意图C是支点当用力压杠杆的端点A时杠杆绕C点转动另一端点B向上翘起石头就被撬
图5是环卫工人用的一种垃圾夹的结构示意图拉绳的一端固定在手把上另一端穿过空心管杆与两夹爪的一端相连当
省力杠杆,费力杠杆
费力杠杆,省力杠杆
省力杠杆,省力杠杆
费力杠杆,费力杠杆
2010全国初中应用物理知识竞赛题.图5是环卫工人用的一种垃圾夹的结构示意图拉绳的一端固定在手把上另
省力杠杆,费力杠杆
费力杠杆,省力杠杆
省力杠杆,省力杠杆
费力杠杆,费力杠杆
如图所示轻质杠杆的支点在0点在杠杆A点用力F1竖直向上拉.请画出拉力F1的力臂和作用在杠杆上阻力F2
下图是一种垃圾夹的结构示意图.拉绳的一端固定在手把上另一端穿过空心管杆后与两夹爪的一端相连接.当用力
省力杠杆 费力杠杆
费力杠杆 省力杠杆
省力杠杆 省力杠杆
费力杠杆 费力杠杆
图5是环卫工人用的一种垃圾夹的结构示意图拉绳的一端固定在手把上另一端穿过空心管杆与两夹爪的一端相连当
省力杠杆,费力杠杆
费力杠杆,省力杠杆
省力杠杆,省力杠杆
费力杠杆,费力杠杆
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你一点也没有打搅到我恰恰相反我很享受你的陪伴.Youdidn'tbothermeatall.Ienjoyedyourcompany.
Liananervouslybithernailswhileshewaitedfortheexamtoarrive.Shelookedaroundtheroom;hundredsofotherlawstudentssatinrowsstaringanxiouslyatthetablesinfrontofthem.Justasshebegantotakeadeepbreathtocalmheranxietyanexambooklet册子wasplacedinfrontofher.Thiswasthemomentshehadbeenexpectingeversinceshebeganlawschoolthreeyearsago.Shepickedupherpencilandopenedtothefirstpageofthebarexamatestforallstudentswantingtobecomelicensedlawyers. Liananeverthoughtshewouldwanttobecomealawyer.Herparentswerebothartists.Lawwassomethingshehadnotbeenexposedtoasachild.Butartmadeforatumultuouscareer﹣bothofherparentshadstruggledtofindjobsandworkedroundtheclockwhentheywereyoung.EventhoughtheyfinallyseemedsuccessfulandhappyLianawantedsomethingdifferent. Shewastheanchoronherhighschooldebateteamandconsistentlyimpressedhercompetitorswithheranalyticalthinking.NeverarguewithMs.Lakesherteacherswouldsay.Soshechosetomajorinlaw.InhermindshepicturedherselfinaNewYorkCitycourtroom法庭dressedinanexpensivesuitwithpapersinherhandwavingatthejury陪审团inaspeechonhumanrights. Butnowwiththebarexamsittinginfrontofhershestartedtoworry.WhatifIdon'tpass?DidIstudyenough?Herthoughtsracedthroughhermind.Onthefirstpageweresevenparagraphsdetailingalawsituationfollowedbyaseriesofquestions.Lianareadthroughtheparagraphsandquicklyscribbleddownanexplanationofthefirstquestionbeforemovingontothenextquestion.Thenextfewhourswentlikethisastheclocktickedcloserandclosertothelunchhour. At12:00p.m.sharpabuzzer蜂鸣器soundedandeveryonewastoldtoputdowntheirpencilsandwalkedoutforanhour﹣longlunchbreak.AtlunchLianametherfriendKevin. Howdiditgo?sheasked.TobehonestI'venoidea.Ijustkeptwriting.Kevinsaid.Lianalaughedandsaidshefeltthesameway. Afterlunchthetwoexchangedwordsofencouragement.Theystrolledbackintotheexamcenterabitmorerefreshed.Lianafinishedthesecondhalfoftheexamthatdaywithabetterfeelingthanwhatshestartedwithinthemorning. 1WhatdoweknowaboutthebarexamLianaistaking? A.Itisforsomeonetobeaqualifiedlawyer. B.Ithasmanylawsituationstodescribe. C.Itlastsforhourswithoutstopping. D.Ittakesplaceeverythreeyears. 2AtumultuouscareerinParagraph2probablyisacareerthat. A.haslotsofchancesofsuccess B.needstoworkindifferentcities C.isfullofcompetitionandhardwork D.demandsmuchprofessionalknowledge 3Lianawantedtobealawyerbecause. A.shewasgoodatarguinganddebating B.shewantedtofollowherfriend'sadvice C.shebelieveditwouldbringherarichandhappylife D.sheaimedtodevoteherselftoprotectinghumanrights 4AttheendoftheexamLianafeltmore. A.nervous B.curious C.energetic D.confident 5Whichofthefollowingwouldbethebesttitleforthepassage? A.TheWildDream B.ATrueLawyer C.TheBigTest D.AHardChoice
阅读下面短文根据其内容写一篇50词左右的内容概要. DoeswritingcomehardItoyou?Areyoudiscouragedtofindyourselfpoorawriting?Nobodyisbornknowinghowtowrite.Goodwritinghabitswhichhelpmakeyouwriteonaregularbasisarenecessaryforyoutoimproveyourwriting. Firstlyyouaresupposedtoreadawiderangeofbooks.It'sobviouswhenawriterisnotwell﹣readlackofreadingwillbeobviousineverysentenceonewrites.Readingpreparesyouwithnecessaryknowledgetobeagoodwriter.What'smoreitprovidesyouwithbasicskillsforwriting.Theimportanceofreadingcannotbestressedtoomuch:readasmuchandasoftenasyoucan. Secondlyit'simportanttomakeawritingscheduleandwritedailyifitispossible.Whetheryouwritefortwohoursadayorfifteenminutesadaydailywritingisthekeytodevelopinggoodwritinghabits.It'sbettertowriteforfifteenortwentyminuteseverydaythantositforfiveorsixhourstowriteovertheweekend.Howeverifyoucanmakeadailywritingschedulewithlongerhoursonyourwritingonweekendsthenit'smuchbetter. Oneoftheworsthabitsisnevertogethelpfromotherstoimproveyourwriting.Itisadvisedthatyoushareyourworkwithothers.Forexampleyoucanpostsceneoryoublogsendyourwritingaroundtoafewfriendsroundupsomereadersandletthemcommentoryourwriting.Thatwayyou'llfindyourwritinggraduallyimproved.
后来他们可能在酒吧或者俱乐部里演出这样他们可以得到现金.Latertheymaygiveinpubsorclubsforwhichtheyarepaidincash.
Livelonger Everyonewantstolivelonger.Wetrytoexerciseeatrightandgetenoughsleep.1.Hereareafewtipsforyoutolivealongerhappierandhealthierlife. Useyourmind Activelyuseyourmindandyou'llcutyourrisk风险ofdevelopingdementia痴呆inhalf.2Memorizephonenumbersinyourcellphone.Asyouputgroceriesintoyourbasketaddthemupinyourmind. Chew咀嚼yourfood Whenyoueatchewyourfoodslowlyandfully.Thatmakesiteasierforyourbodytousethefoodnutrients.Alsoittakes20minutesforyourstomachtotellyourbrainit'sfull.3 Maketimeforyourself Weallhaveplentyofstress压力inourdailylives.Besuretofindsomewaystomakethatstressless.Takingsomekindofactivitieswilldoyougood.4Havedinneroutwithfriends.Startanewhobby.Dosomethingyouenjoyjustforyou. It'snotaboutme 5Studiesshowthatvolunteeringincreasesyourlifespan寿命.Italsobuildsyoursocialnetwork.Andhavinglotsoffriendsaroundespeciallyinoldagehelpsyoulivelonger. A.Takeanexerciseclass. B.Butotherthingscanalsohelp. C.Dothingsslowlyoneatatime. D.Livinglongerisnotaneasything. E.Ifyouwanttolivelongerhelpothers. F.Thinkoffungamestoplaybyyourself. G.Ifyoueatmoreslowlyyou'lllikelyeatless.
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假设你是红星中学高三学生李华.你校将在下周举办校园书市活动.请给你校美国交换生Jim写封邮件邀请他参加.邮件内容包括:1.书市活动的相关内容时间地点活动等;2.说明你自己要参加的活动和理由;3.询问他是否愿意参加.注意:1.词数不少于50; 2.开头和结尾已给出不计入总词数.提示词:校园书市:campusbookfair DearJim Yours LiHua
TheParents'LifesavingTouch OnMarch252010KateandDavidheardthewordseveryparentfeelsfrightenedof:Theirnewbornwasn'tgoingtomakeit.Theirtwins﹣agirlandaboy﹣wereborntwominutesapartand14weekspremature早产的1justovertwopoundseach.Doctorshadtriedtosavetheboyfor20minutesbutsawno2.Hisheartbeatwasnearlygoneandhe'dstoppedbreathing.Thebabyhadjustminutesto3. Isawhimgasp喘息weaklybutthedoctorsaiditwasno4KatetoldtheDailyMailfiveyearslater.Iknowitsoundsstupid5ifhewasstillgaspingthatwasasignoflife.Iwasn'tgoingtogiveup6. Inanefforttocherish珍惜herlastmomentswiththetinyboyKateaskedto7him.Thecoupleknewthiswaslikelya8. Kateremovedthehospitalblanket9theboywhomthecouplehadalready10JamieandorderedDavidtotakehisshirtoffand11herandtheboyinbed.Thefirst﹣timeparentswantedtheirsontobeaswarmaspossibleintheirarmsandhopedtheskin﹣to﹣skincontactwouldimprovehis12.Theyalsotalkedtohim. Weweretryingtoentice说服himtostayKatetoldtheDailyMail.Weexplainedhisnameand13hehadatwinwhohehadtolookoutforandhowhardwehadtriedto14him. Thensomethingcompletely15happened.Jamiestarted16again.Finallyhereachedforhisfather'sfinger. Thecouple'slostboyhadmadeit. We'rethe17peopleintheworldDavidsaid. EightyearslaterJamieandhissisterEmilyarehappyand18.Theparentsonlyrecentlytoldthekidsthestoryoftheir19.EmilyburstintotearsKatetoldtheDailyMail.ShewasreallyupsetandshekepthuggingJamie.Thiswhole20makesyoucherishthemmore. 1A.losing B.measuring C.weighing D.showing 2A.appreciation B.improvement C.prediction D.agreement 3A.live B.play C.grow D.think 4A.harm B.trouble C.wonder D.use 5A.but B.or C.and D.for 6A.gradually B.peacefully C.hardly D.easily 7A.cover B.hold C.cure D.wash 8A.risk B.party C.goodbye D.tradition 9A.around B.to C.beside D.against 10A.promised B.kept C.awarded D.named 11A.join B.place C.feed D.hide 12A.appearance B.condition C.memory D.skill 13A.why B.when C.that D.if 14A.protect B.raise C.teach D.save 15A.unbelievable B.unfamiliar C.natural D.acceptable 16A.waving B.speaking C.smiling D.breathing 17A.kindest B.luckiest C.bravest D.cleverest 18A.free B.relaxed C.healthy D.confident 19A.birth B.adventure C.growth D.education 20A.project B.experiment C.progress D.experience
“珍惜资源保护环境”是每位公民应尽的义务下列相关做法错误的是
Whatwouldyousayifwetoldyouthatyoucouldlearntospeakanewlanguageinonly7days?Prettyunbelievableright?Buthowcoulditbe?TofindoutwespoketoDavid﹣oneofourbraveBabbellearners﹣toseehowtheBabbelappsuccessfullygothimspeakingNorwegian挪威语injustoneweek. Howmuchtimedidyoulearneachday? Ididn'tneedtogivemyentirelifeovertolearningNorwegian.EachBabbellessontakesonly15minutesandIsetmyselftheachievableaimoffinishingthreeBabbellessonsdaily.Thistookonly45minuteseachday. HowdidtheBabbelapphelpyoulearnsoquickly? TheBabbelapphasacourseplanforbeginnersthattaughtmehowtomakesentencesinNorwegianwithinthefirstfewdays.ThenIwasabletopersonalizemylearningbyselectingsingle﹣topiclessonsoneatingdrinkingmusicculturetravelingandsoon.Thisallowedmetoquicklyenlargemyvocabulary! ThiswayoflearningkeptmehighlyactiveandmadesureIwasn'tboredtotearswithgrammarpracticethatweallrememberfromschool! After7daysIwasabletointroducemyselfinNorwegiantalkaboutmyhobbiesandinterestsandmostimportantlycommunicatingwithanativeNorwegianspeakerinarealconversationandIcouldevenplayajokeortwo! Wouldyouintroducethisapptoothers? Certainly!Babbelhas14languagestochoosefromsoifyou'rethinkingaboutbrushinguponyourGermanforabusinesstriporlearningabitofPortuguese葡萄牙语fornextyear'ssummervacationyou'llbehappytohearthatyouonlyneedanapp7daysoflearningtogetyouconversational. 1TheBabbelappisusedforpeopleto. A.learnlanguages B.dobusiness C.speakwithnatives D.planavacation 2HowdidtheBabbelapphelpDavidlearnquickly? A.Ittookhimlittletimeeveryday. B.Itprovidedhimwith14languages. C.Itgavehimdailygrammarpractice. D.Itofferedlessonsaccordingtohisneeds 3TheexampleofDavidisusedinthepassagetoshowthat. A.hardworkmattersalot B.Babbelappsellswell C.Norwegianiseasytolearn D.Babbelappreallyhelps
TheGainIsWorththePain Iwasabout9yearsold.IwastakingRedCrossswimminglessonsatourcommunitypool.ThedayhadarrivedwhenIwastobe1toseeifIcouldadvancefromtheAdvancedBeginnersclasstotheIntermediateclass. Approximatelyfifteenofusweretotake2toswimfromonesideofthepooltotheotherandbackdoingvariousstrokes泳姿andexercisesalongtheway.Iwatched3myclassmatesonebyonetriedandfailedtopassthetest.Thenitwasmyturnto4Imeanmyturntoattempttopassthetest.IgotabouthalfwayacrossthepoolwhenIfeltthe5sensationyoufeelwhenchlorinated加氯消毒的waterentersyournose.I6stoppedandseizedthesideofthepool7mytest. Oneoftheinstructorswasstanding8meamessyhairedcollegestudent.Whydidyoustop?he9inalessthanmercifulvoice.Igotwaterinmy10Iexplained.That'swhenthisscruffycollegestudenttaughtmeoneoflife'sgreat11evenifheprobablynever12hewasdoingthat.BendingdownheshoutedSo? So?Thequestion13me.Ithadjustseemedreasonabletomethattheanswerto14wastogetridofthethingcausingthediscomfort.My9yearoldbrainhadnotunderstoodthefactthatavaluablegoalisworth15evenifwehavetogothroughdiscomforttogetthere.RecognizingthatIwasn'tsurewhatwouldkeepmefromcompletingthetest.InfactIdiditrathereasilyonmynext16.Seeingmepassthetestalmostalloftheothersdidsoaswell. Lifeisajourneyandtheroadwon'talwaysbe17.Theobstaclesthehardshipsthebarriersthatappearalongthewaycan'tbe18tothegoalthatwaitsattheend.Wehavetofocusonthefinaldestinationnottheblocksintheroad.AsoneputitIconsiderthatourpresentsufferingsarenotworthcomparingwiththe19thatwillbeshowninus.Theplanisnottogetridofsufferinginourlives20tolookpastit. 1A.urged B.checked C.tested D.placed 2A.chances B.turns C.efforts D.actions 3A.as B.until C.once D.since 4A.escape B.observe C.train D.fail 5A.burning B.dizzying C.freezing D.tiring 6A.hesitantly B.immediately C.frequently D.constantly 7A.starting B.enquiring C.ending D.continuing 8A.beside B.above C.behind D.against 9A.whispered B.announced C.smiled D.yelled 10A.eyes B.ears C.nose D.mouth 11A.lessons B.lectures C.courses D.examples 12A.complained B.admitted C.regretted D.realized 13A.excited B.encouraged C.comforted D.shocked 14A.gain B.pain C.success D.disappointment 15A.having B.changing C.achieving D.setting 16A.attempt B.plan C.show D.activity 17A.tough B.easy C.rough D.busy 18A.attached B.linked C.exposed D.compared 19A.glory B.result C.fun D.sadness 20A.and B.or C.but D.even
HongbaoinChina WhileWesternkidsdreamaboutwhatSantawillbringthemChinesekidswillbegettingtheirmoneyboxreadytoreceivehongbao.HongbaoredenvelopesarethetraditionalgiftsthatadultsgivechildrenduringtheChineseNewYearholidayperiod.ThegeneralideaisthatadultswithincomegivechildrenwithnoincomehongbaoduringChineseNewYear.1 You'llseehongbaousedasdecorationsonjustabouteveryChineseNewYearflowerandplantthatisdisplayedduringtheseason.2Andtheyareonlyusedfordecoration.Iknowbecausemysonchecksthemwheneverhecanreachthem 3Weddingsarebigeventswherehongbaoaregivenbyguestsinvitedtotheweddinginsteadofgifts.Theamountofmoneytogiveataweddingcanbetricky微妙的andifyouareinvitedtoaChineseweddingyoucanaskforsomeadviceabouthowmuchtogive. Ifyouneedhongbaoyoucanbuythematshopsatanytimeoftheyear.4Soyouensureyoudon'tgetonethatsaysCongratulationsonyourmarriageforabirthday. Thesedayspeopledon'tevenhavetoleavethecomfortoftheirsofastogivehongbao.Wechatapopularinstantmessageandphotosharingappintroducedelectronichongbaosonowit'seveneasier. 5 A.Thesewillbeempty. B.Itisnecessarytobuyfancyones. C.Hongbaoaregivenatotheroccasionstoo. D.Asktheshopownerorafriendwhichonetobuy. E.Friendssendeachotherhongbaofromtheirphones! F.Infactchildrencanevenmeanyoungadultswhoareunmarried. G.Youmaywantthecorrectstatementsonthefrontoftheenvelopeitself.
现在这个年轻小伙子通过做销售谋生. Theyoungmanbybeingasalesman.
越来越多的青年人开始关注野生动物的保护. Anincreasingnumberofyoungpeoplebegantothewildlifeprotection.
Ifplanningofferssomanybenefitswhydomanyprofessionalsresistit?Somearemorecomfortablewithactingandthereforedon'twanttodevotesomuchtimetoitortheythinktheircircumstancesaresolikelytochangethatplanningisuseless.Otherpeoplecomplainthatthingsaregoingsowellorsobadlythatthere'snopointinplanning.Finallysomepeopledon'tmakestrategicplansbecausetheycan'trecognizethedifferencebetweenstrategicandshort﹣termoperationalplanning﹣howtogetwhereyou'vealreadydecidedtogo. Circumstancesdochangeandit'sreasonabletowonderaboutthevalueofplanningwhenthingsarechangingsorapidly.Buttheplanswearetalkingaboutarenotsetinconcrete.Theyareadaptableframeworksgoalsthatcanconformto顺应changingcircumstances.There'snothingwrongwithchangingdirectionifweknowwhatwe'redoingandunderstandourownreasoning. Whyplanifthingsaregoingfine?Won'ttheycontinuelikethis?Won'ttheskillswenowusealwaysbeindemand?Probablynot﹣especiallyinscienceandtechnology.Beingpreparedfornewsituationsisaleadingreasonforhavingastrategicplaninthefirstplace.Evenifwecannotpredicteverythingthatwillaffectourpathwehaveabetterchanceofdealingwithiteffectivelyifwe'vethoughtahead. ThingsaregoingterriblyandIcan'tbotherplanningbecausesurvivalisthenameofthegamerightnow.Goodreasoning.Ifitseemsthatit'sgoingtobeaclosecalljusttoreachthatcontractedgoaldon'tworryaboutstartinganewoverallstrategy.Butmostofusoftenthinkthingsareworsethantheytrulyare.Ifyouarecontinuallymovingfromonecrisis危机toanotheryoumayneedtotakesometimeofftounderstandwhy.Areyoureallyheadingwhereyouwanttogo?Whatchangesindirectioncouldpreventsomeofthesecrisesinthefirstplace? Sospendsometimethinkingaboutyourfutureoutlineyourplansanddiscussthemwithpeopleclosetoyou.Strategicplanningtakesworkbutitpaysoff.It'sanexcitingwaytocreatethefutureratherthanjustcoastintoit. 1Manyprofessionalsrefusetomakestrategicplanssincetheybelievethat. A.operationalplanningismoreimportant B.planningisharmfulandunhealthy C.theirsuccessdependsoncircumstances D.planningisofnouseatalltotheirwork 2Fromthesecondparagraphtheauthorarguesthatplanning. A.isflexibleandmaychangewithchangingsituations B.mayloseitsvaluewhenthecircumstanceschange C.guidesusthrougheachstageoflifetoourdestiny D.adaptsustothechangingenvironmentatalltimes 3Evenifwearedoingwellwestillneedplanningbecause. A.wecandomuchbetterwithanoverallworkingplan B.itoffersaframeworkfromwhichtosolveanydifficulties C.workskillstodaywillgooutofusesoonerorlater D.ithelpsustodealwithunpredictablesituations 4Whatistheauthor'sattitudetowardsstrategicplanning? A.Disapproval. B.Supportive. C.Doubtful. D.Neutral.
推理是化学学习中常用的思维方法.下列推理正确的是
既然大家都在那我们开始开会吧.everyoneisherelet'sbeginourmeeting.
For1centurypeoplehavebelievedthatchickensoup2helptofightacold.Nowdoctorssayitmaybetrue.Theythinkthatchickensouphassomethingthatstopsacoldfromgetting3bad.Heatfromthesoupcanalsomake4personfeelbetter. Manypeoplethinkthatitisunhealthynottohavemeat.Itistruethatmeat5especialredmeathasproteinthatthebodyneeds.Aperson6doesn'teatmeatcangetenoughproteinandbehealthybyeatingtofueggsandsomevegetables.Astudyshowsthatteaisbetterthancoffee.Teahassomethingthatcanprotectyourheartfightcancerandmakeyoulessfat.Coffee7donotdothis. Manypeoplebelievethatbreadandpotatoescaneasilymakepeoplefat.Infactbreadandpotatoesdonothavefatinthem.But8eattoomuchandnotexercisingcanmakepeoplefat.9addingthingslikebutterto10theycanraisethechanceofbecomingfat.
Whenwasthelasttimeyousatonaparkbench凳子?Didyoustayforlong?Anewkindofparkbencheswilllimittheamountoftimeyoucansitthere.Ifyoudon'tgetupintimeitcouldbeverypainful:therearemanysharpspikes钉子onthepartthatyousiton! Visitorswhowantarestonthebenchneedtoputacoininamachinenexttoit.Oncethemoneywasacceptedthespikesdisappearintothebench.Thenvisitorscansitdowncomfortablybutonlyforhalfanhour.Whenthetime'supthespikesslowlystartmovingupagain.Itdoesn'thurtatfirstbutafteraminutetheystartcomingupevenmorequickly.Theyaren'tlongenoughtocauseserioushurtbuttheydocausepainastestshaveshown.Butwhyhavetheybeeninstalled安装? Ourpublicparkisverypopularinsummeraspokespersonfortheparkexplained.Butwithallthethousandsofpeoplewhovisittheparktherearen'tenoughbenchesforeveryone.Wewanttomakesurethatthebenchesaresharedbymorevisitorsandtostoppeopletakingabenchandstayingthereallday.Installingspikesseemstobethefairestwayofstoppingpeopledoingthis. 1Howisthenewkindofparkbenchdifferentfromotherbenches?Itcanlimittheamountoftimepeoplesitonitwithsharpspikes./ Ifyoudon'tgetupfromitinlimitedtimeitcouldmakeyoupainful./ Therearemanysharpspikesonittolimittheamountoftimepeoplesitonit. 2WhatisParagraph2mainlyabout? 3Whyarethenewbenchesinstalled? 4ThepassagesaysInstallingspikesseemstobethefairestwayofstoppingpeopledoingthis.Doyouagreewiththis?Pleasestateyourreasons.Yes.Ifpeopleareaskedtopayforbenchestheywillnottakeittoolongwhentheydon'treallyneedit.Thuseveryvisitorwillhavethechancetoshareit./ No.Benchesinparksshouldbefreetovisitors.Theparkcanbuildmorebenchestosolveitsprobleminsteadoflimitingthetimewhenvisitorshavearestonbenches.
下列实验操作正确的是
生活中有太多的变化下列“变”中涉及化学变化的是
春节里父母都会给孩子穿上新衣服然后走亲访友.DuringtheSpringFestivalparentswilltheirchildrenandvisittheirrelativesandfriends.
她为自己的两个孩子都有音乐天赋而自豪. Shewasproudthatbothherchildren.
春天来了我们期待着一起去郊游. Springiscoming.Weaschoolouting.
下列实验操作先后顺序错误的是
Twomenbothseriouslyillsharedthesamehospitalroom.Onemanwasallowedtositupinhisbedforanhoureachafternoon.Hisbedwasnexttotheonlywindowoftheroom.Theothermanhadtospendallhistimeflatonhisback.Thementalkedforhoursonend.Theyspokeoftheirwivesandfamiliestheirhomestheirjobstheirexperienceinthearmyandwheretheyhadbeenonvacation.Everyafternoonwhenthemaninthebedbythewindowcouldsituphewouldpassthetimebydescribingtohisroommateallthethingshecouldseeoutsidethewindow.Themanintheotherbedbegantoliveforthoseone﹣hourperiodswhenhisworldwouldbebroadenedandenlivenedbyalltheactivitiesandcolorsoftheworldoutside. Thewindowoverlookedaparkwithalovelylake.Ducksandswansplayedonthewaterwhilechildrensailedtheirmodelboats.Youngloverswalkedarminarmamongflowersofeverycolor.Grandoldtreesmadeeverythingaroundmoreattractiveandafineviewofthecityskylinecouldbeseeninthedistance.Asthemanbythewindowdescribedallthisingreatdetailthemanontheothersideoftheroomwouldclosehiseyesandimaginethepicturesquescene.Onewarmafternoonthemanbythewindowdescribedaparadepassingby.Althoughtheothermancouldn'thearthebandhecouldseeitinhismind'seyeasthegentlemanbythewindowpictureditwithdescriptivewords. Daysandweekspassed.Onemorningthedaynursearrivedtobringwaterfortheirbathsonlytofindthelifelessbodyofthemanbythewindowwhohaddiedpeacefullyinhissleep.Shewassaddenedandcalledthehospitalattendantstotakethebodyaway.Assoonasitseemedappropriatetheothermanaskedifhecouldbemovednexttothewindow.Thenursewashappytomaketheswitchandaftermakingsurehewascomfortableshelefthimalone.Finallyhewouldhavethejoyofseeingitforhimself. 注意: 1.所续写短文的词数应为150左右; 2.使用5个以上短文中标有下划线的关键词语; 3.续写部分分为两段每段的开头语已为你写好; 4.续写完成后请用下划线标出你所使用的关键词语. Paragraph1: Slowlyandpainfullyhemadehisgreatestpossibleeffortstolookoutofthewindowbesidethebed. Paragraph2: Themanwasblindandcouldnotevenseethewall.Perhapshejustwantedtoencourageyou.thenurseanswered.
UnderwaterMuseums Manyunderwatermuseumsaresupportedbycompaniesthatofferguidedtours.Atrainedguideleadsgroupsaroundastrikingunderwaterdisplayofstatuesineachmuseum.Dependingonthedepthofthemuseumvisitorsmaybeabletoviewthesculpturesfromtheglass﹣bottomedboatorbyswimmingonthesurface.Otherunderwatermuseumsaredeeperandaremostaccessibletoscubadivers. Underwatermuseumshavemanyfunctions.Oneoftheirmainpurposesistocreateanartificialreefenvironmentwhereseacreaturescanlive.That'swhysomeofthemuseumsarelocatedinareasthatweredamagedbyhurricanesorareconsideredunderwaterdeserts.Thestatuesinthemuseumaredesignedinawaythatencouragesthegrowthofcoralandplantlife.Overtimethestatuesandplantsattractmoreandmorefishtothearea. FloridaU.S.A Floridaishometodifferenttypesofunderwatermuseums.Thestate'snewestunderwatermuseumtheUnderwaterMuseumofArtcanbefoundoffthecoastofGraytonBeach.ThispartoftheGulfofMexicoisanunderwaterdesertsocreatorshopethattheexhibitwillimprovethemarineecosystem. CancunMexico ForyearsCancunhasbeenapopulartouristdestination.Andoneofthemajordrawsisthewater.TheMuseoSubacuaticodeArteisanidealplaceforsnorkelersandfirst﹣timedivers.Theretheycanenjoymorethan500statuesthathelptomakeupanartificialreef.Thismuseumwascreatedtogivevisitorsanalternativeattractiontothearea'snaturalreefwhichhasbeendamaged. CanaryIslandsSpain MuseoAtlantiooffthecoastofLanzarotehasanimpressivedisplayofmorethan300statues.TheywerecreatedbyJasonDecairesTayloraBritishsculptorwhohascontributedtothecreationofseveralunderwatermuseumsincludingtheonesnearCancunandtheCanaryIslands.TheCancunstatuesfocusonman'sinteractionwiththemarineworld.Ifyou'relookingforadifferentmuseumexperiencecheckoutonethat'sunderwater. 1Inunderwatermuseumsvisitorscanseethefollowingthingsexcept. A.statues B.deserts C.reefs D.sculptures 2Accordingtothepassagewhichofthefollowingstatementsistrue? A.Underwatermuseumscannotbevisitedthroughguidedtours. B.Underwatermuseumsarealllocatedinareasdamagedbyhurricane. C.Underwatermuseumscanbeviewedallovertheworld. D.Underwatermuseumscanhelpimproveunderwaterenvironments. 3Wecanlearnfromthepassagethat. A.over300statuescanbeseenintheUnderwaterMuseumofArt B.naturalreefhasn'tbeendamagedinCancun C.thestatuesofCancunandtheCanaryIslandsaremadebythesamesculptor D.plantlifecan'tgrowinunderwatermuseums 4Whereisthetextprobablytakenfrom? A.Apersonaldiary. B.Atouristguidebook. C.Anofficialreport. D.Ahotelbrochure.
MydadJacobRobinwasbornandraisedinMountWolfPennsylvaniaandin1927attheageof28hedecidedtogosouthforthewinter. Surprisinglytheonlytransportationhehadforthislongtripwashistrustybicycle.Assummerwascomingtoanendhepackedafewnecessitiesinaboxtieditonhisbikeandstartedonthelongjourney. Dadwouldridealldayandintheeveninghe'dstopatafarmhousealongthewayandoffertodosomeworkinexchangeforfoodandaplacetosleep.Ashegotfarthersouthhe'dfindachurchwherehecouldbeddownforthenight.Surroundedbyorangeandgrapefruitgroves树丛healwayshadplentytoeatforbreakfast. FinallyhereachedTampaarapidlygrowingcitywheretherewasplentyofwork.Hegotajobwithaconstructioncompanyandhebuilthimselfalittleshack棚屋thathecouldcallhome. Dadlovedhisjobandmadelotsoffriendsbutasthemonthsrolledalonghebeganthinkingofhome.SpringwasfastapproachingbackinPennsylvaniasohedecideditwastimetoleavethesouthandheadbacktoMountWolf. Luckilydad'sbossandcrewobtainedotherworkthatwastakingthemnorthsothebossofferedtotakedadalonganddrophimoffinPennsylvania.It'shardformetoimaginetravelingallthatwaytoFloridaonabicycleanditwouldhavebeenworseheadingintothecoolspringofthenorth. IfyouaskeddadwhathedidwithhisbicycleandshackwhenheleftFloridahewouldsmileandsayIgavethemalltoahomelessman. 1Whydidtheauthor'sdadgosouthin1927? A.Tospendhisholidaythere. B.Tofindawell﹣paidjobthere. C.Tovisithisfriendsandrelatives. D.Tospendthewinterinawarmplace. 2Whichwordcanbestdescribetheauthor'sdad? A.aithful. B.Adventurous. C.Careless. D.Quick﹣minded. 3Whatcanweknowabouttheauthor'sdadfromthetext? A.Hecouldhardlyfeedhimselfduringthelongtrip. B.Hewasunwillingtogiveuphisbicycleandshack. C.Hisplantogosouthwasnotsupportedbyhisfamily. D.Histripbackhomewasmucheasierthankstohisboss.
Twobrothersdecidedtodigadeepholebehindtheirhouse.Astheywereworkingacoupleofolderboys1stopbytowatch. Whatareyoudoing?askedoneofthe2visitorcuriously. Weplan3digaholeallthewaythroughtheearth!oneofthebrotherssaid4excited. Theolderboysbegantolaughtellingthe5youngonesthatitwasimpossible. Afteralong6silentoneofthediggerspickedup7boxfullofspidersandinsects.Heshowedthewonderfulthings8theolderboys. ThenhesaidconfidentlyEvenifwedon'tdigallthewaythroughtheearthlookatwhatwefoundalongtheway! 9theydreamwasfartoobigbutitdidcausethemtodig.Andthatiswhatadreamisfor﹣tocauseustomoveinthedirectionwehavechosen. Noteverydreamwillberealized.Butwhenyoucouldn'tgetwhatyouwantedperhapsyoucansayYesbutlookatthewonderfulthings0havecomeintomylifebecauseItriedtodosomething!
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