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如图是一张长方形纸板，按图示剪下阴影部分刚好能做成一个圆柱体，求做成的圆柱体的表面积．
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某工厂用如图甲所示的长方形和正方形纸板做成如图乙所示的竖式与横式两种长方体形状的无盖纸盒.1现有正方
一张长方形纸片剪下一个正方形剩下一个长方形称为第一次操作在剩下的长方形纸片中再剪下一个正方形剩下一个
如图是一张长方形铁皮利用图中的阴影部分刚好能做成一个长是10厘米宽是5厘米高是2厘米的长方体盒子连接
一张长方形的铁皮如图剪下图中的阴影部分恰好可以做成一个油桶接头处不算．这个油桶的容积是多少立方分米
一张长方形的铁皮如图剪下图中的阴影部分恰好可以做成一个油桶接头处不算．这个油桶的容积是多少立方分米
一张长方形卡纸先画出图中的阴影部分然后刚好能做成一个圆柱接头处忽略不计求这个圆柱的表面积是多少平方分
在劳技课上老师请同学们在一张长为17cm宽为16cm的长方形纸板上剪下一个腰长为10cm的等腰三角形
小明用一张长方形硬纸板按下图的方法剪下来正好做成了一个圆柱这个圆柱的侧面积是多少平方厘米
在劳技课上老师请同学们在一张长为17cm宽为16cm的长方形纸板上剪下一个腰长为10cm的等腰三角形
一张长方形纸的两边长分别是8和6用这张长方形纸围成一个圆柱的侧面那么这个圆柱的体积可以是结果用π表示
有一张长方体铁皮如图剪下图中两个圆及一块长方形正好可以做成一个圆柱体这个圆柱体的底面半径为10厘米
把一边长为40cm的正方形硬纸板进行适当的剪裁折成一个长方形盒子纸板的厚度忽略不计1如图1若在正方形
下图是一块长方形铁皮利用图中的阴影部分铁皮刚好能做成一个带盖的铁桶请问该铁桶的容积为毫升π取3.1
12.56
50.24
94.2
100.48
在劳技课上老师请同学们在一张长为9cm宽为8cm的长方形纸板上剪下一个腰长为5cm的等腰三角形要求等
一张长方形铁皮按照下图剪下阴影部分制成一个圆柱状的油漆桶求它的容积．
如图有一张长方形铁皮剪下图中两个圆以及一块长方形正好可以做成一个圆柱体这个圆柱体的底面半径为10厘
205.6
1028
1256
2056
一张长方形铁皮按照如图剪下阴影部分制成一个圆柱状的油漆桶它的容积是升
如图将一张长方形纸片对折两次然后剪下一个角打开.如果要剪出一个正方形那么剪口线与折痕成
22.5°角
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【问题】如图12是底面为1cm母线长为2cm的圆柱体和圆锥体模型.现要用长为2πcm宽为4cm的长方
有一张长方体铁皮如图剪下图中两个圆及一块长方形正好可以做成一个圆柱体这个圆柱体的底面半径为10厘米那
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Areyouahappypersonoranunhappyperson? Ifyou'reanunhappypersonpleaserememberthathappinessisachoice.1Whatyouneedtodoistomakesomechanges. Unhappypeoplearemorelikelytobelievethatlifeishard.Theyseethemselvesasvictimsoflifewhensomethingbadhappenstothem.Yesasisknowntoalllifecanbehard.2 Unhappypeoplearemorelikelytobelievethatmostpeoplecan'tbetrusted.Theydon'tthinkstrangerscanbetrusted.Unfortunatelythisthoughtslowlystartstopreventthemfrommeetingnewpeople.3Inthiswayyoucanmakemorefriendswhocanincreaseyourhappiness. Unhappypeoplelikecomparingthemselveswithothersandfeeljealous.4Thisiswrong.Insteadyoushouldgetinspiredandtrytoachievemore.Learntobelieveinunlimitedpossibilities.Don'tgetupsetandthinkthatsomebody'slucklimitsyourpossibleoutcomeinlife. Unhappypeopleconsidertheirfuturewithworryandfear.5Unhappypeoplefilltheheadspacewithworryandfear.Howcanyoubehappyifyouarealwaysinworryorfear?Whenfearorworrycrossesyourmindaskyourselfifthereisanactionyoucantaketopreventyourfearorworryfromhappening.Ifthereisn'tjustlayitdownbecauseworryorfeardoesyounogoodatall. Everyonewillprobablyswiminnegativewatersonceinawhilebutwhatmattersishowlongyoustaythere.Followthewaysmentionedaboveandthenyouwillbemuchhappier. A.Butyoushouldhaveapositiveattitudetowardslifeinsteadofcomplainingallthetime. B.Thereisonlysomuchspacebetweenyourears. C.Unhappinessisalsoachoice. D.Youcanchoosetobehappy. E.Youshouldtrytobekindtoothersinordertomakemorefriends. F.Insteadyoushouldbelieveinthegoodinpeopleandstayopenandfriendlytowardspeopleyoumeet. G.Theybelievethatsomeoneelse'sluckisstolenfromtheirown.
AnAmericanphotographerismakingcopiesofgreatartworkavailableforblindpeopleandthosewithverypooreyesight.Atleast285millionpeopleworldwideareeitherblindorconsideredvisuallyimpaired有缺陷的.Theyareunabletoseeorenjoyvisualfineart. RomeoEdmeadlosthiseyesightwhenhewasonlytwoyearsold.Butthathasnotstoppedhimfromlivinglifetothefullest.Hewenttocollageandstudiedjournalism.HenowlivesinNewYork.Hedependsheavilyonhisothersenses.ButhecannotexperiencethegreatworksofartintheCity.Heremembersavisittoanartcollectionwithhisgrandmother.WewenttothismuseumandIjustwanderedoffsomewhereandIstartedtouchingsomethingandallofasuddenalarmwentoff.Andaguardcamerunningoverandmygrandmotherwasallashamed.Romeoisnowabletousehisfingerstofeelartpaintings.Hecangetanideaoftheappearancebyfollowingthemarkings. JohnOlsononceworkedasaphotographerforLIFEmagazine.HedevelopedaprintingprocesstomaketheartofDaVinciandVanGoghtouchableforvisually﹣impairedpeople.Ibegantorealizehowimportantimages影像havebeentomeandwhattheyhaveallowedmetodo.Anditcausedmetowonderwhatitwasfortheblindnothavingaccesstoimages.Olson'scompanyiscalled3DPhotoworks.Itproducescopiesofartworkinthreedimensions﹣heightwidthanddepth.Thewholeprocesscantakeuptofourweeks. Thankstonewtechnology3Dartmaysoonhanginartmuseumsallovertheworld.Itgivesthevisually﹣impairedthechancetoexperiencethebeautyofvisualart. 1WhatmotivatedJohnOlsontomake3Dartforblindpeople? A.Thebenefitofhiscompany. B.RomeoEdmead'ssufferings. C.Hisappreciationtoblindpeople. D.Theimportanceofimagestopeople. 2Whatdoestheunderlinedworddimensionmean? A.aperiodoftime B.thesizeofasituation C.ameasurementinspace D.thewayofdoingthings 3HowwillJohnOlson'sworkinfluencethelifeofblindpeople? A.Theyareabletolivetheirlifetothefullest. B.Theycanhavethechancetofeelthebeautyofvisualart. C.Theydon'tneedtodependheavilyontheirothersenses. D.Theyhavefreeaccesstomuseumswithoutanydifficulty. 4Whatcanwelearnfromthepassage? A.Ittakesamonthorsotoproducea3Dartwork. B.3Dartisproducedbasedonheightanddepth. C.3Dartisdisplayedinartmuseumsallovertheworld. D.JohnOlsonisrichforwhathehasdonefortheblind.
DearMary IreceiveyourE﹣mailjustnow.Don'tworryaboutme.I'mgettingonwellmyresearchworkinthelab.ButtomygreatsurpriseyousayyouwillgiveuplearningEnglish.Thereasonisthatbecauseyouhavenotdonewellinitrecentlyandyouhavelostinterests.I'mafraidIcan'tagreeonyou.IknowitisdifficulttolearnEnglishbutEnglishiswideusedintheworldtoday.Itwillbeimportanttoolinourfuturework.Besideitisbecomingmoreandmoreimportantinyourdailylife.Ifyoustudyhardyouwillsucceed.Dorememberwherethereisawillthereisaway.I'mlookingforwardtoheargoodnewsfromyou.
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一根轻质弹簧受到拉力作用时其长度会变长且拉力大小与弹簧长度的增加量之比为定值．该比值反映了弹簧的力学性质由此定义该比值叫做弹簧的劲度系数用符号k来表示．如果将两根自然长度相同劲度系数不同粗细也不同的弹簧套在一起看做一根新弹簧设原弹簧A劲度系数为k1原弹簧B劲度系数为k2．现将弹簧AB的一端连接在一起将AB的另一端也连接在一起作为新弹簧记为C的两端C劲度系数为k3．关于k1k2k3的大小关系同学们做出了如下猜想 甲同学和电阻并联相似可能是＝+ 乙同学和电阻串联相似可能是k3＝k1+k2 丙同学可能是k3＝ 1为了验证猜想同学们设计了相应的实验．装置见图甲 2简要实验步骤如下请完成相应填空． ①将弹簧A悬挂在铁架台上用刻度尺测量弹簧A的自然长度L0 ②在弹簧A的下端挂上相同的钩码记下钩码的个数n每个钩码的质量m已知实验室所在位置的重力加速度大小g并用刻度尺测量弹簧的长度L1 ③由F＝计算弹簧的弹力由x＝L1﹣L0计算弹簧的伸长量由计算弹簧的劲度系数 ④改变重复实验步骤②③并求出弹簧A的劲度系数的平均值k1 ⑤仅将弹簧分别换为BC重复上述操作步骤求出弹簧BC的劲度系数的平均值k2k3．比较k1k2k3并得出结论． 3图乙是实验得到的图线由此可以判断同学的猜想正确． 4相类似地定义一个系统在受到拉力作用时拉力大小与系统长度增加量的比值叫做系统的等效劲度系数如图丙中的装置就是我们要研究的一个系统外力竖直向下作用于与动滑轮相连的挂钩上滑轮光滑且质量不计挂钩质量不计细线为不可伸长的轻绳弹簧的劲度系数为k且质量不计．若定义该系统的长度为系统静止时天花板到挂钩最低点间的距离则该系统的等效劲度系数为． A．4kB．2kC．0.50kD．0.25k
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2018年5月和12月我国分别成功地将探月工程的鹊桥号中继星和嫦娥四号登月探测器发射升空．鹊桥号中继星是世界首颗运行于地月拉格朗日L2点的通信卫星为在月球背面工作的嫦娥四号登月探测器提供地月间的中继通信．该L2点位于地球和月亮连线的延长线上如图所示鹊桥号在该点消耗很少燃料就可较长期地与月球同步绕地球做圆周运动．嫦娥四号登月探测器软着陆月球背面更深层次地探测月球地质资源等方面的信息．请根据上述信息和你所掌握的物理知识确定下列叙述中正确的是
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如图所示在竖直平面內有一粗糙斜面轨道AB与光滑圆弧轨道BC在B点平滑连接滑块经过B点时速度大小不变斜面轨道长L＝2.5m斜面倾角θ＝37°O点是圆弧轨道圆心OB竖直圆弧轨道半径R＝1m圆心角θ＝37°C点距水平地面的高度h＝0.512m整个轨道是固定的．一质量m＝1kg的滑块在A点由静止释放最终落到水平地面上．滑块可视为质点滑块与斜而轨道之间的动摩擦因数μ＝0.25取g＝10m/s2sin37°＝0.6cos37°＝0.8不计空气阻力求 1滑块经过圆弧轨道最低点B时对圆弧轨道的压力 2渭块离开C点后在空中运动的时间t．
JohnMichaelThomas14Florida WhenJohnMichaelThomasdecidedtohonorhisfriendandclassmateElizabethBuckleywhodiedfromcancerherememberedhowmuchshelovedpeacocks孔雀. Hewantedtobuildalifesizedpeacockfountain喷泉inElizabeth'sfavoriteparkinthecity.Hethoughtitcouldbeaplaceforpeopletorelaxandbeinspired. JohnMichaelraised﹩52000tobuildthefountain. BarrettEngland13Utah ThewheelsbegantoturnforBarrettEnglandwhenheheardaboutKarmaBikeShopaplacewhereyoungpeoplecanearnafreebikebyreadingandperformingcommunity社区service. BarrettvisitedKarma'sownerwithhisideaHewouldcollectandrepairusedbikesanddonate捐赠themtotheshop. Heexpectedtogetabout10donatedbikes.IntheendBarrettreceived39. ZacharyBlohm15Wisconsin The25yearoldplaygroundatanelementaryschoolnearMilwaukeeWis.wassosmallthatonly70ofits575studentscouldplayonitatatime. That'swhenZacharyBlohmsavedthedayHeandsomevolunteersbuiltahugeplayground.ToraisemoneyZacplannedTshirtandbakesalessoldticketsandmore.Heheldmonthlymoneyraisingeventsformorethanayear.Overallhecollected﹩130000﹣enoughtofinishhisproject. JackZimmerman16NewJersey Forsomepeoplefindingamealisassimpleasopeningtherefrigerator.Formorethan366000hungrykidsinNewJerseyit'snotthateasy. Thatfactdidn'tsitwellwithJackZimmermanwhoorganizedadrivetolessenchildhoodhungerinhisstate.Hisgoalcreate40000packagedmealsthatcouldbedonatedtothoseinneed.OngamedayJackandhisvolunteersstartedtheirwork.Afterthefinalcounttheteamhadpackaged47124meals﹣wellaboveJack'sgoal. 1Thepeacockfountainwasbuiltinapark. A.toinspirepeople B.fortheloveofanimals C.inmemoryofateenager D.toencourageacancersufferer 2WhatdidBarrettdoforKarmaBikeShop? A.Hedonatedbikestoit. B.Herepairedbikesthere. C.Hehelpeditwincustomers. D.Heofferedareadingservicethere. 3Whatdothefourpeoplehaveincommon? A.They'retopstudents. B.Theycareaboutothers. C.Theylikevariouspublicactivities. D.They'remoneyraisersforthepoor.
某科学家提出年轻热星体中核聚变的一种理论其中的两个核反应方程为H+C→N+Q1H+N→C+X+Q2方程式中Q1Q2表示释放的能量相关的原子核质量见下表
如图所示理想变压器输入端接在电动势随时间变化内阻为r的交流电源上输出端接理想电流表及阻值为R的负载变压器原副线圈匝数的比值为．如果要求负载消耗达到最大功率则下列说法正确的是
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Musicisoneofthemostimportantandpowerfulthingsinmylife.1listentomusiccanhelpmotivatemeinhardtimes. WhenIwasyoungerIdidn'thavethegreatlove2musicasIdonow.I3mainlistenedtowhatmyparentswerelisteningto.Ididn'thavemuchofcareformusicalcompositions.WhetherIwasinthecarthehouse4anywhereelsetherewassuretobesomeBeatlesBuddyHollyortheDubliners.NowasI'm5oldIenjoyitasitallowsme6remembermychildhood. Ibelievemusic7havetheabilitytoconveyallsortsoffeelings.Theeffectthatmusiccanhaveonour8emotionisunbelievableasitcanbringpeopletofloodsoftearsorburstsoflaughter. Ibelievemusicaffectspeopleinmanydifferentways.Tomemusicismorethanjust9welistentoorplayit'ssomethingtofeel.Inmylifeitismusicwhichisextremelyimportant10bringsmeclosertomyfriendsandfamily.Ialsofeelthatithelpsmetogetthroughthings.
Manypeoplethinkheroesneedtobehandsomerichorverysmart.Butasformeaheroisapersonwhoalwayshelpsothers. MyheroisUncleBill.Heistheeldestsonofaworkerandhegrewupinapoorfamilywithfouryoungerbrothersandtwolittlesisters.Hehadtogiveupschoolathisveryyoungage.Heworkedandgaveallhismoneytohisparents.Whenhewasgettingolderhefoundthathewasveryinterestedinfixingthings.Hecollectedbrokenthingswhichpeoplethrewawayandfixedthemintogoodones.Hecouldfixalmosteverythingthatdidnotwork.Heworkedhardandnevergaveup.Finallyheopenedhisownrepairshop.Ittookhimabout20yearstobecomeasuccessfulshopkeeper店主. Nowheisveryrichandhasfourothershops.Butheneverforgetsthedayswhenhehadnothing.Hegivesmoneytopoorfamilieshelpspoorkidsbuybooksandoffersthemfreelunches.Healsoencouragespeopletorecyclethings.HealwayssaysMakegooduseofwhatyouhavebecausewejusthaveoneearth.Hevolunteerstocleantheenvironmentinourneighborhood. 1WhatdoesUncleBill'sfatherdo? A.Heisashopkeeper. B.Heisaworker. C.Heisamathteacher. D.Heisafarmer. 2HowmanybrothersandsistersdoesUncleBillhave? A.7. B.6. C.5. D.4. 3WhydoesthewriterthinkUncleBillisahero? A.Heisrichandsmart. B.Heisasuccessfulshopkeeper. C.Healwaystrieshisbesttohelpothers. D.Heisgoodatfixingbrokenthings. 4WhichofthefollowingisTRUEaccordingtothepassage? A.UncleBillisnotgoodatfixingthings. B.UncleBillownsfiverepairshops. C.UncleBillforgetsthedayswhenhehadnothing. D.UncleBillcaresaboutnotpeoplebuttheenvironment. 5What'sthebesttitleforthispassage? A.UncleBill﹣MyHero B.ASuccessfulShopkeeper C.ProtectOurEarth. D.Let'sHelpEachOther.
某冋学利用如图甲所示装置研究匀变速直线运动规律．某次实验通过电磁打点计时器打出纸带的一部分如图乙所示图中ABCDE为相邻的计数点每两个相邻计数点间有4个计时点没有画出打点计时器所接交流电源频率为50Hz．分别测出A点到BCDE点之间的距离x1x2x3x4以打A点作为计时起点算出小车位移与对应运动时间的比值并作出﹣t图象如图丙所示． 1实验中下列措施必要的是填正确答案标号 A．打点计时器接220V交流电源B．平衡小车与长木板间的摩擦力 C．细线必须与长木板平行D．小车的质量远大于钩码的质量 2由图内中图象求出小车加速度a＝m/s2打A点时小车的速度vA＝m/s．结果均伓留两位有效数字
如图所示竖直平面内的直角坐标系中X轴上方有一个圆形有界匀强磁场图中未画出x轴下方分布有斜向左上与Y轴方向夹角θ＝45°的匀强电场在x轴上放置有一挡板长0.16m板的中心与O点重合．今有一带正电粒子从y轴上某点P以初速度v0＝40m/s与y轴负向成45°角射入第一象限经过圆形有界磁场时恰好偏转90°并从A点进入下方电场如图所示．已知A点坐标0.4m0匀强磁场垂直纸面向外磁感应强度大小B＝粒子的荷质比＝×103C/kg不计粒子的重力．问 1带电粒子在圆形磁场中运动时轨迹半径多大 2圆形磁场区域的最小面积为多少 3为使粒子出电场时不打在挡板上电场强度应满足什么要求
IntheUnitedStateswhenonebecomesrichhewantspeopletoknowit.Andevenifhedoesnotbecomeveryrichhewantspeopletothinkthatheis.ThatiswhatkeepingupwiththeJonesesisabout.Itisthestoryofsomeonewhotriedtolookasrichashisneighbors. Theexpressionwasfirstusedin1913byayoungAmericancalledArthurMomand.Hetoldthisstoryabouthimself.Hebeganearning＄125aweekattheageof23.Thatwasalotofmoneyinthosedays.HegotmarriedandmovedwithhiswifetoaverywealthyneighborhoodoutsideNewYorkCity.WhenhesawthatrichpeoplerodehorsesMomandwenthorsebackridingeveryday.WhenhesawthatrichpeoplehadservantsMomandandhiswifealsohiredaservantandgavebigpartiesfortheirnewneighbors. Itwaslikearacebutonecouldneverfinishhisracebecauseonewasalwaystryingtokeepup.TheraceendedforMomandandhiswifewhentheycouldnolongerpayfortheirnewwayoflife.TheymovedbacktoanapartmentinNewYorkCity. Momandlookedaroundhimandnoticedthatmanypeopledothingsjusttokeepupwithrichlifestyleoftheirneighbors.Hesawthefunnysideofitandstartedtowriteaseriesofshortstories.HecalleditKeepingupwiththeJonesesbecauseJonesisaverycommonnameintheUnitedStates.KeepingupwiththeJonesescametomeankeepingupwithrichlifestyleofthepeoplearoundyou.Momand'sseriesappearedindifferentnewspapersacrossthecountryforover28years. PeopleneverseemtogettiredofkeepingupwiththeJoneses.AndthereareJonsesineverycityoftheworld.ButonemustgettiredoftryingtokeepupwiththeJonesesbecausenomatterwhatonedoesMr.Jonesalwaysseemstobeahead. 1SomepeoplewanttokeepupwiththeJonesesbecausethey. A.wanttobeasrichastheirneighbors B.wantotherstoknowortothinkthattheyarerich C.don'twantotherstoknowtheyarerich D.wanttobehappy 2Itcanbeinferred推断fromthestorythatrichpeopleliketo. A.liveoutsideNewYorkCity B.liveinNewYorkcity C.liveinapartments D.havemanyneighbors 3ArthurMomandusedthenameJonesinhisseriesofshortstoriesbecauseJonesis. A.animportantname B.apopularnameintheUnitedStates C.hisneighbor'sname D.notagoodname 4AccordingtothewriteritistokeepupwiththeJoneses. A.correct B.interesting C.impossible D.good 5What'stheauthor'sattitudetokeepingupwiththeJoneses? A.Negative B.Positive C.Objective D.Supportive
Childrenwhohavechancesto探索naturalareastendtolovescience.
材料相同质量不同的两滑块以相同的初动能在水平面上运动直到停止．若两滑块运动过程中只受到水平面的摩擦力则质量大的滑块
如图所示的xOy坐标系中x轴上固定一个点电荷Qy轴上固定一根光滑绝缘细杆细杆的下端刚好在坐标原点O处将一个套在杆上重力不计的带电圆环视为质点从杆上P处由静止释放圆环从O处离开细杆后恰好绕点电荷Q做圆周运动．下列说法正确的是
如图所示长木板AB倾斜放置板面与水平方向的夹角为θ在板的A端上方P点处以大小为v0的水平初速度向右抛出一个小球结果小球恰好能垂直打在板面上现让板绕A端顺时针转过一个角度到图上虚线的位置要让球从P点水平抛出后仍能垂直打在板面上则抛出的水平速度v不计空气阻力
ThereisanoldEnglishsayingLaughteristhebestmedicine.OnepersoncertainlywouldhaveagreedwiththisisNormanCousins. NormanCousinswastheeditorofamagazinecalledSaturdayReviewforalmostfortyyears.Healso1andspokeaboutworldpeaceandanti﹣warissues反战议题travelingtomanydifferentcountriestosharehis2. Inthe1960safterreturningtotheUnitedStatesfromabusyandtiringtriptoEurope.Mr.Cousinsgot3.Hediscoveredhehadastrangediseasethatcausedgreatpaininhisbones骨头. Inlessthanaweekafterhegotbackhecouldnot4it.Everymovethathemadewaspainful.Hewasnotableto5atnight.ThedoctortoldMr.Cousinsthattheydidnotknowhowtocure治疗hisproblemandhemightnever6theillness.Mr.Cousinshoweverrefusedtogiveuphope. Mr.Cousinsthoughtthattheillnesscouldbecausedby7thoughts.Hedidnotwanttotake8tocurehimself.Insteadhefeltthathappythoughtsorlaughtermightcurehisillness. Hebegantoexperimentonhimselfwhilestillinthehospitalbywatchingcomedyshowsontelevision.Mr.Cousinsquicklyfoundthattenminutesof9laughterduringthedaygavehimtwohoursofpain﹣freesleepatnight. Decidingthatthe10couldnothelphimMr.Cousinsleftthehospitalandcheckedintoahotelroomwherehecould11hisexperimentswithlaughter.ForeightdaysMr.Cousins12inthehotelroomwatchingcomedyshowsontelevisionreadingamusingbooksandsleepingwheneverhefelt13.WithinthreeweekshefeltwellenoughtotakeavacationtoPuertoRicowherehebeganrunningonthebeachfor14. AfterafewmonthsMr.Cousinswas15tocarryonhiswork.Hehadlaughedhimselfbacktohealth. 1A.laughed B.taught C.wrote D.copied 2A.magazines B.subjects C.photos D.ideas 3A.rich B.sick C.lonely D.famous 4A.stand B.realize C.face D.improve 5A.dream B.eat C.shout D.sleep 6A.gothrough B.lookafter C.getover D.findout 7A.unhappy B.pleasant C.silly D.clever 8A.food B.time C.medicine D.money 9A.unusual B.false C.real D.wild 10A.friends B.laughter C.experiment D.doctors 11A.begin B.end C.continue D.report 12A.rested B.worked C.studied D.played 13A.well B.tired C.afraid D.worried 14A.help B.exercise C.freedom D.fun 15A.able B.safe C.lazy D.uncertain
IneversawmyfatherhomefromworklateorillnordidIeverseemyfathertakeanightoutwiththeboys.Hehadnobobbiesbutjusttookcareofhisfamily. For22yearssinceIlefthomeforcollegemyfathercalledmeeverySundayat900am.Hewasalwaysinterestedinmylife﹣howmyfamilywasdoing.ThecallsevencamewhenheandmymotherwereinAustraliaEnglandorFlorida. NineyearsagowhenIboughtmefirsthousemyfather67yearsoldspenteighthoursadayforthreedayspaintingmyhouse.Hewouldnotallowmetopaysomeonetohaveitdone.AllheaskedwasaglassoficedteaandthatIholdapaintbrushforhimandtalktohim.ButIwastoobusyforIhadalawpracticetorunandIcouldnottakethetimetoholdthepaintbrushortalktomyfather. Fiveyearsagomy71﹣year﹣oldfatherspentfivehoursputtingtogetheraswingset秋千formydaughter.AgainallheaskedwasthatIgethimaglassoficedteaandtalktohimButagainIhadlaundrytodoandthehousetoclean. ThemorningonSundayJanuary161995myfathertelephonedmeasusualthistimehehadseemedtohaveforgottensomethingswehaddiscussedtheweekbefore.IhadtogettochurchandIcuttheconversationshort. Thecallcameat440am.ThatdaymyfatherwassenttohospitalinFlorida.IgotonaplaneimmediatelyandIvowed发誓thatwhenIarrivedIwouldmakeupforthelosttimeandhaveanicelongtalkwithhimandreallygettoknowhim. IarrivedinFloridaat100ambutmyfatherhadpassedawayat912pm.Thistimeitwashewhodidnothavetimetotalkortimetowaitforme. IntheyearssincehisdeathIhavelearntmuchaboutmyfatherandevenmoreabouteverysingleday. 1Weknowfromthereadingthatthefather. A.likedtopainthouses B.hadnofriendsaroundhim C.wasnothealthyinhisyouth D.thoughtofhisfamilyashisall 2Whenherfatherpaintedherfirsthousethedaughter. A.couldonlyaffordaglassoficedtea B.wastoobusytotalktoherfather C.coulddonothingbutholdapaintbrush D.spenteighthoursadayworkingwithherfather 3OnJanuary161995thedaughterfeltthatherfather. A.seemedtobealittledifferent B.hadnotimetophoneherasusual C.becameinterestedinchurch D.hadforgottentodiscusssomethingswithher 4Inthereadingtheunderlinedphrase‘gettoknowhim'mostprobablymeans. A.gethimtoknowher B.knowmoreabouthim C.gethimtoknowhimself D.makehimwell﹣known 5Whichisthebesttitleofthereading? A.PaintingHouses B.Daughter'sFamily C.FatherandI D.Father'sphonecalls
已知月球半径为R飞船在距月球表面高度为R的圆轨道上飞行周期为T万有引力常量为G下列说法正确的是
假定你是李华你的加拿大笔友Susan正在学汉语她给你发来邮件询问你的近况并请你为她推荐﹣本汉语读物.请给她回复邮件要点如下 1.表示感谢 2.介绍你的近况学习生活等 3.推荐中国民间故事ChineseFolkTales. 注意 1.词数100左右 2.可适当增加细节以使行文连贯. DearSusan I'mmorethandelightedtohearfromyou.﹣﹣﹣﹣ Yours LiHua
2018年11月21日消息中科院合肥物质科学研究院核能安全所吴宜灿研究员获得美国核学会聚变核能杰出成就奖．关于核反应方程半衰期下列说法正确的是
某载人宇宙飞船绕地球做圆周运动的周期为T由于地球遮挡宇航员发现有T时间会经历“日全食”过程如图所示．已知地球的半径为R引力常量为G地球自转周期为T0太阳光可看做平行光则下列说法正确的是
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