电阻箱是实验室常用电学器材，请回答以下两个问题： （1）电阻箱各旋钮位置如图甲所示，该电阻箱的阻值为　 　Ω． （2）请按要求利用电阻箱设计测定电压表内电阻的电路．器材：直流电源（电动势未知，内电阻忽略不计）一个，电阻箱一只，单刀单掷开关一只，单刀双掷开关一只，电流表一只（带有满足要求的多个量程，且不计内阻），待测电压表（电压表量程满足要求）一只，导线若干． 要求： ①用两种不同测量方法，测定电压表的内电阻，每种方法不一定使用全部器材，测量电路尽可能简洁 ②要求电阻箱的读数即为电压表的内阻 ③画出测量电路原理图（在图乙、图丙中），并补全测量步骤 方法一：电路图： 步骤：1．　 　，闭合开关S，读出伏特表此时示数U； 2．调节变阻箱阻值，使电压表读数变为　 　此时电阻箱的阻值即为电压表的内阻； 方法二：电路图： 步骤：1．S2置于2，S1闭合，读出电流表的示数； 3．断开S1，把S2置于1再闭合S1，调节电阻箱的阻值使电流表读数　 　，此时电阻箱的阻值即为电压表的内阻．

如图所示水平面内ab和cd是两条平行放置的足够长直粗糙金属导轨MN和MN是两根用细线连接的金属杆其质量分别为m和2m两杆与导轨的动摩擦因数均为μ．开始时水平外力F作用在杆MN上使两杆以速度υ0水平向右匀速运动．两杆的总电阻为R导轨间距为d整个装置处在磁感应强度为B的匀强磁场中磁场方向与导轨所在平面垂直导轨电阻可忽略重力加速度为g．在t＝0时刻将细线烧断保持外力F不变金属杆和导轨始终接触良好已知在t＝t0时刻后杆MN速度保持不变且在0～t0时间内两杆速度方向始终向右求 10～t0时间内任意时刻两杆的加速度大小之比 2t0时刻两杆各自的速度 30～t0时间内两杆各自的位移．

一个圆柱削去2.4立方米后正好削成一个与它等底等高的圆锥削成的这个圆锥的体积是立方米圆柱原来的体积是立方米．

计算下面各题能简算的要简算 841﹣3248÷16 25%×32×1.25 ×+×．

某村2016年产粮食50吨2017年比2016年增产三成五2017年产粮食多少吨

数学课本的封面是一个长方形．判断对错

÷35＝＝15＝%．

WhichofthefollowingsentencesisWRONG?A.Thereisnopointinarguingwithhimfurther. B.Thereisnoneedtoworryaboutyourson﹣he'sfine. C.Thereisnodoubtthatwewillfinishalltheworkintwodays. D.Thereisawonderthatheremainedaliveafterdroppingfromthetallbuilding.

Itisnotassimpleasopeningthedoorandhittingthetrackinwinter.Thereareafewthingsyoucandotoensureyouaregettingthemostoutofyourrunandimporantlynotdoingmoreharmthangood. Warmupcooldown 1Yourmusclesneedsometimetowarmupwhenit'scoldsotakeiteasywhenyousetoffanddoafewstretches伸展onceyou'refinished. Drinkwater Youmightnotfeelhotbutthat'sbecausesweatevaporates蒸发morequicklyintothechillydryair.Sobesuretodrinkwaterbeforeduringandaftercold﹣weatherworkouts.2Abeltbottleconvenientlyattachestoyourwaistsoyoudon'thavetocarryitandcanhaveadrinkwheneveryoufeellikeit. 3Runningincottonisabadidea.Wearthinbreathablelayersofsynthetic合成的clothingthathelpprotectyoufromthewindandsnowbutstillletoutheatandmoisture水分.Thirtypercentofyourbodyheatescapesthroughyourhandsandfortypercentthroughyourhead.Wearahatorbeanie无边小便帽andglovessoyourcirculatorysystemcandistributewarmbloodtotherestofyourbody.4 Runintothewind 5ObviouslyitwillbeaneasierpassagehomewithsomeextrahelpfromMotherNature.Butmoreimportantlyyouwon'thavethewindinyourfaceforthesecondhalfofyourrunwhenyouaremorelikelytobesweatingandcatchachill. A.Dressright. B.Keepwarm. C.Don'tgotoofasttoosoon. D.Startandfinishinthesameway. E.Don'twaittodrinkwateruntilyoufeelthirsty. F.Headoutintothewindandcomehomewithitatyourback. G.Onreallycolddayswearamaskorscarfoveryourmouthtoprotectyourface.

四年级同学在这次劳动中共浇树165棵比二年级小同学浇树棵数的4倍少7棵．二年级小同学在这次劳动中共浇树多少棵

一个物块置于粗糙水平地面上受到水平拉力F的作用F随时间t变化的关系如图甲所示物块的速度v随时间t变化的关系如图乙所示．g＝10m/s2设滑动摩擦力等于最大静摩擦力则下列说法正确的是

请修改下面的短文.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. InDecember9anEnglishspeechcontestisheldinourcity.36studentsfrom15 schoolstookpart.ThecontestmadeupofthreeroundsanEnglishspeechanswering thequestionsandatalentshow.EverystudentmadeaexcellentspeechinEnglish whichthemewasaboutTheBeautyofOurCity.Whentheyansweredthequestions theyfeltconfidentlyofsucceeding.Inthetalentshowcolorfulperformancesgivenbyher weremorethanattractive.There'snodoubtaboutthatthiscontestwasahugesuccess. Throughtheactivitythestudentshavelearntalot.Theyhavenotonlyimprovedtheir speakingEnglishandalsoenjoyedasenseofachievement.

所有的直角都一样大．．判断对错

口算． 0.25×4＝ 8.1÷9＝ 0.125×8＝ 0×36.78＝ 45.6÷0.3＝ 80.6÷0.2＝

AboutsixyearsagoItookajobsomepeoplewouldconsideradreamjob.Atthetimeitwasconsideredasecurejobwithgreatbenefits.AstheyearspassedIrealizedIwasjustrepeatingeveryday.SoIdecidedtobeginbuildingmyownbusiness. Iknowwhatyouarethinking﹣there'snosecurityinthat!YeahIknow.IhaveheardthatandaboutonethousandotherreasonswhyIshouldhavecontinuedworkingattheregularjob.ButIdon'tregretmydecision.Iknowmanypeopleouttherealsowanttostarttheirownbusiness.Herearesomethingsyouneedtoknowbeforebreakingthemouldandleavingyour9﹣5toconcentratefull﹣timeonyourdreamThere'sneveraperfecttime.Somethingwillalwayscomeuptopreventyoudefer推迟yourdecisionchangeyourminddiscourageyouorsetyoubackabouttenyears. Havinganexperiencedandtrustedadviserisimportant.Why?Becauseifyoufindonewithasimilarthoughtprocessitislikelythattheyhavewalkedinthepathyouaretaking.Payattentiontotheiradviceasitcansaveyourheartache. Havingallthedetailsfiguredoutisimpossible.Therearesomanythingsyouhavetodobeforelaunchingoutintothedeep.Eitherwaytherearerisksinvolved.Youcanhaveallofyourinsecuritiessolvedandguesswhat!Somethingwillcomeuptomakeamessofeverything.Keepmovingon.Pressthroughit. Theclosertheyarethedeepertheystab.Notallofyourfriendswillcelebrateyourchange.Therewillbethosewhowouldratherdiscourageyouandtellyouhowyouwillnevermakeitbutalltheywouldhavetodoissupportyou.It'syourdream.It'syourresponsibility.Ifyouallowthewordsofotherstokeepyoufromityouweren'tsuitableforit. 25.Whydidtheauthordecidetostarthisownbusiness? A.Hegotfedupwiththeregularjob. B.Hewasencouragedbypeoplearoundhim. C.Hethoughthispreviousjobwasoutofdate. D.Hedidn'tmakegoodmoneyfromtheregularjob. 26.Whatdoestheauthormeanbybreakingthemouldinthesecondparagraph? A.Notobeyingtherulesatwork. B.Learningnewwaystodothejob. C.Gettingoutoftheoldworkplace. D.Improvingtheworkingenvironment. 27.Whichstatementwilltheauthoragreewith? A.Preparationisn'tthatimportantinstartingabusiness. B.Oneshouldjustdoitifhewantstostartabusiness. C.Moredetailsshouldbeconsideredtoreducerisks. D.Oneshouldtakeothers'wordsseriously. 28.What'stheauthor'spurposeinwritingthetext? A.Toexplainwhyhestartedhisownbusiness. B.Tomakehisbusinessknowntomorepeople. C.Togiveadvicetothosewantingtoworkforthemselves. D.Tocomparehavingaregularjobwithstartingabusiness.

小明打算15天看完一本故事书平均每天看12页现在要提前3天看完平均每天看多少页

如图所示为一列简谐横波沿x轴传播在t＝0实线和t＝0.5s虚线时刻的波形图． i若t＝0时刻x＝2.5m处质点正沿y轴负方向振动求该质点第一次回到t＝0时刻的位置所经过的最长时间 ii若波动的周期T≤0.5s≤2T则在1s内波形传播的距离为多少

Ifyouwishtobecomeabetterreaderherearefourimportantthingstorememberaboutreadingrate ●Knowingwhyyouarereadingorwhatyouarereadingtofindoutwilloftenhelpyoutoknowwhethertoreadrapidlyorslowly. ●Somethingsshouldbereadslowlythroughout.Examplesaredirectionsformakingordoingsomethingarithmeticproblemsscienceandhistorybookswhicharefullofimportantinformation.Youmustreadsuchthingsslowlytoremembereachimportantstepandunderstandeachimportantideas. ●Somethingsshouldbereadrapidlythroughout.Examplesaresimplestoriesmeantforenjoymentnewslettersfromfriendspiecesofnewsfromlocalorhome﹣townpaperstellingwhatishappeningtofriendsandneighbors. ●Insomeofyourreadingyoumustchangeyourspeedfromfasttoslowandslowtofastasyougoalong.Youwillneedtoreadcertainpagesrapidlyandthenslowdownanddomorecarefulreadingwhenyoucometoimportantideaswhichmustberemembered. 1Theunderlinedwordrateinthefirstsentencemeans. A.fast B.slow C.speed D.skill 2Whichshouldbereadslowlyaccordingtothepassage? A.Storiesforenjoyment B.Arithmeticproblems C.Lettersfromfriends D.Newsfromhometownnewspapers 3Howfastshouldweread? A.Thefasterthebetter. B.Themoreslowlythebetter. C.Neithertoofastnortooslow. D.Itdependsonwhatwearereading. 4AccordingtothepassagewhichofthefollowingisNOTtrue? A.Readslowlywhenyouarereadingsomethingimportanttoyou. B.Readfastwhenyouarereadingsomethingunimportanttoyou. C.Readthematerialsthatyouareinterestedinslowly. D.Readthematerialsthatyouareinterestedinfast.

解方程或解比例． 1x+0.5＝ 23x﹣1.4＝7.3 30.8x＝0.75

分数除法的意义与整数除法的意义相同．判断对错

如图所示在两个电荷量相等的正点电荷的电场中两电荷连线的中垂面上有一以连线中点O为圆心的圆AB为圆上对称的两点两点电荷连线的延长线上有一点C下列说法正确的是

任意两个质数的积一定是

将一个高是21cm的圆锥形量杯装满水再将水倒入与它等底等高的圆柱形量杯中圆柱形量杯的水面高度是cm．

一辆货车从甲地开乙地去送货2.5小时行驶150千米照这样的速度再行3.5小时可以到达乙地甲乙两地相距多少千米．

Wewentforanothatincludedapicnicandavolleyballgame.

Whenwereadapoem.weoftenimaginewhatthepoets1thinkwhentheywroteorwhattheyweredoingatthetime.Thesethoughtsletusconnectwiththewordsbetterasifwe'dcreatedthepoem2we.Willapoemstillmeanasmuchifacomputewritesit? By3useagorithms算法computerscannowcreateallkindsoftextincludingresearchpapersbooksnewsstoriesandevenpoems.Computer﹣generatedpoemsmightbecorrectinbothgrammarandstyle4somesaytheystilllack5createandtruemeaning. AustralianresearcherOscarSchwartzcreatedawebsite6callbotornot.Onhissiteyoucanreadpoemsandguesswhetherthey7writebyahumanoracomputer.SchwartzrecentlygaveaspeechatTedXSydneyin8hestatedthatsomeofthewebsite'spoemswereableto9foolish65percentofhumanreaders. Hesaidthatonhiswebsitehehopedpeoplewouldquestionthedifferencebetweenhumansand machines一andbeabletoidentifywhatitis10makesushuman.

一辆汽车每千米耗油升照这样计算行10千米耗油升行100千米耗油升．

小红在书店买了两本打八折出售的书共花了12元小红买这两本书便宜了多少钱．

商店同时卖出两台洗衣机每台2400元其中一台比进价高20%另外一台比进价低20%总的来看商店卖出这两台洗衣机是赚钱还是赔钱赚多少或者赔多少

一个圆锥体的体积是31.4立方分米高是5分米它的底面积是平方分米．

如图所示电源电动势为E内阻为r电路中的R2R3分别为总阻值一定的滑动变阻器R0为定值电阻R1为光敏电阻其电阻随光照强度增大而减小当开关S闭合电容器中一带电微粒恰好处于静止状态下列说法中正确的是

有两列简谐横波ab在同一介质中分别沿x轴正负方向传播振幅均为0.1m速度均为v＝5m/s在t＝0时两列的波峰正好在x＝2.5m处重合．求 it＝0时两列波的波峰重合处的位置 i从t＝0开始计时至少经过多长时间介质中出现位移为﹣0.2m的质点．

某实验小组拟使用如图所示装置测量某电源的电动势和内阻E2r待测图中E是一个电动势比较稳定的电源电动势未知E1为标准电源电动势为E1．AB为一根均匀的电阻丝．Ro为已知的定值电阻实验操作步骤如下 1闭合Sl调整滑动变阻器R到合适位置再闭合S2调节电阻丝AB的滑动触头使得电流计G示数为零此时触头在C．记录AC长度LAC此时由于灵敏电流计无示数AC两端电压与E1相等电源El内阻不分压假设电阻丝AC接入的电阻为RAC电阻丝总电阻RAB滑动变阻器接入阻值R稳定电源E内阻为r0表示E和E1的关系．用RAC．RAB．REro表示 2断开S2闭合S3其他不变调节电阻丝AB的滑动触头使得电流计G示数为零此时触头在D记录AD长度LAD根据前两步骤即可测量待测电源的电动E2＝．用LACLADE1表示灵敏电流计示数为零时接入电阻丝长度LAx与待测电动势．填成正比例成反比例无关 3再闭合S4其他不变调节电阻丝AB的滑动触头使得电流计G示数为零此时触头在E未画出记录AE长度LAE此时AE两端电压电动势El填等于不等于待测电源E2的内阻r＝．用LADLAERo表示

有一车苹果要装同样大小的纸箱如果每箱装30斤可装满120个纸箱．现用这一车苹果装满100个纸箱每个纸箱应该装多少斤苹果用比例解答

所有偶数都是合数所有奇数都是质数．．判断对错

方叔叔在某投资平台上投资30万元该项目年化收益率是11%即每年收益是本金的11%存期一年半到期后可获利润万元．

一项工程甲乙合作6天完成甲独做10天完成乙独做天完成．

计算能简算的要简算 58.9﹣12.42﹣6.48 +﹣ 7.8÷[32×1﹣+3.6] ×40%+0.75×

计算怎样简便就怎样算． 99×13+13＝

如图一定质量的理想气体由状态a沿abc变化到状态c吸收了340J的热量并对外做功120J．若该气体由状态a沿adc变化到状态c时对外做功40J则这一过程中气体填吸收或放出J热量．

只列式不计算 ①一个数的40%正好等于18的求这个数． ②180减去60与20的和差是多少．

人人商场到海南岛去收购山竹收购价为每千克2.7元．从海南岛到商场的距离是600千米运费为每吨货物每运1千米收3元．如果在运输及销售过程中的损耗是10%那么商场要想实现20%的利润每千克山竹的零售价应定为多少元

一个数不是正数就一定是负数．．判断对错

图形的各边按相同的比放大后或缩小后所得的图形与原图形比较

一节数学课共小时同学们动手操作用了一节课时间的老师引导讲解用了小时其余时间做作业．做作业用了多少小时

非0自然数A和B如果A＝B则AB的最大公约数是最小公倍数是．

有8支足球队进行足球比赛如果每两支球队进行一场比赛共比场．

Capsaicin辣椒素canbeusedasmedicinetohelpreducepain.Itmayseemstrangethatwhatcausespainmightalsomakepaingoaway.Yetit'strue. TiborRohacsisamedicalresearcheratNewJerseyMedicalSchoolinNewark.Herecentlystudiedhowcapsaicinworkstoreducepain.ResearchersalreadyknewthatwhencapsaicinturnsontheTRPV1proteinit'sliketurningonabrightlight.Wheneverthelightisonthepersonexperiencespain.Rohacsandhiscolleaguesthendiscoveredachemicalchainreactionthatlatersilencesthispain.HesaysThelightshinessobrightlythatafterawhilethebulbburnsout.ThentheTRPV1proteincan'tturnbackonagain.Whenthishappensthebrainnolongerfindsoutaboutthefeelingofpain. Thehumanbodyisgoodatrepairingitselfhowever.Eventuallythepainwillfixthispainsystemandcanonceagainsendpainalerts警报tothebrain.HoweveriftheTRPV1proteinisactivated激活oftenthepainsystemmaynotgetachancetorepairitselfintime.Thepersonwillonlyfeeldiscomfortorburningatfirst.Thenheorshewillexperiencerelieffromothertypesofpain.Forexamplepeoplewitharthritisregularlyhavepainintheirfingerskneeshipsorotherjoints.Rubbingacreamcontainingcapsaicinontothepainfulareamayburnatfirst.Afterawhilehowevertheareawillbecomenumb. Rohacswarnsthatcapsaicincreamsdon'tseemtogetdeeplyenoughintotheskintototallyremovepain.Hesaysotherresearchersarecurrentlytestingcapsaicinbandagesorinjections.Theywouldlikelydoabetterjobathaltingpain.Unfortunatelytheytendtohurtalotmorethanacream﹣atleastinthebeginning.Someonewhocantoughoutthediscomforthowevercouldfeelnopaininthefollowingseveralweeksnothours. 32.WhathappenstothepersonwhentheTRPV1proteinisturnedon? A.Heloseshissenses. B.Hesuffersphysicalpains. C.Heslightlysensesdiscomfort. D.Hegetsusedtothefeelingofpain. 33.Whenmaythepainsystemnotrecover? A.WhentheTRPV1proteinburnsout. B.Whenthebraincannotreceivepainalerts. C.WhentheTRPV1proteinisturnedonfrequently. D.Whendifferenttypesofpainoccuratthesametime. 34.Whatistheproblemofcapsaicincreamswhentheyareusedtoreducepain? A.Theyarenotveryeffective. B.Theycauseburnsintheskin. C.Theycausetoomuchdiscomfort. D.Theycanstoppainforjustseveralweeks. 35.Whatdoestheunderlinedwordhaltinginthelastparagraphmean? A.Finding.B.Feeling.C.Hiding.D.Stopping.

一种树苗的成活率是90%为保证成活450棵至少要栽多少棵树苗列式为

小明看一本书第一天看了全书总页数的如果再看15页就可以看完全书总页数的一半这本书共有页．

a＞0则得数大于a的是

小王开出租车一个星期的收入情况如下表． 1小王平均每天收入． 2照这样计算1个月按25天计算可以收入．

把一个物体的实际长度扩大200倍后画在图纸上比例尺是

双休日爸爸带小勇去登山从山底到山顶全程有1.8千米他们上山用了3小时下山用了2小时．上山和下山的速度各是多少

本金不变利率上调单位时间内所得到的利息将增加．判断对错

下面各圆中的线段是圆的半径．

如图所示是一名登山运动员的攀登陡峭雪壁的情形如果认为峭壁的平面是竖直的平面冰面是光滑的腿与峭壁面是垂直的轻绳与壁面的夹角为30°运动员重为80kg．则细绳给人的张力大小T A．T＝N B．T＝800N C．T＝N D．T＝1600N

科学实验小组利用300粒米种子进行发芽试验结果有15粒种子设有发芽求发芽率．

下面这个图形是由1平方厘米的拼成的你知道它的面积是多少吗平方厘米．

某人身份证号是522223200207180094这个人的出生年月日是性别是．

在比例尺18000000的地图上量得深圳和广州两地的距离为2厘米深圳与广州的实际距离约为千米．

因为×＝1所以互为倒数．判断对错

为迎接运动会同学们做了25面黄旗30面红旗做的红旗比黄旗多面多%．

计算 1×× 2÷﹣ 3×+0.75×

把边长为1分米的正方形卷成一个最大的圆柱形那么这个圆柱的侧面积是多少体积是多少

公顷＝平方米 1时15分＝时 5.07m3＝dm3．

把一个圆柱体木块削成一个最大的圆锥削去部分的体积是圆锥体积的

质量为M＝1kg的木板静止在粗糙水平面上木板与地面间的动摩擦因数为μ1在木板的左端放置一个质量为m＝1kg大小可忽略的铁块．铁块与木板间的动摩擦因数为μ2取g＝10m/s2．若在铁块右端施加一个从0开始增大的水平向右的力F假设木板足够长铁块受木板摩擦力Ff随拉力F的变化如图所示．则两个动摩擦因数的数值为

列式计算一个数的35%比这个数的少15求这个数．

哈尔滨十月平均气温是﹣20℃海南十月平均气温15℃两地平均气温相差℃．

要想记录一周的天气变化情况应选用扇形统计图．判断对错

直角三角形绕其中一条边旋转一周后得到的图形一定是圆锥．判断对错

如图左边为一带正电的小球右边为一金属圆环外壳接地电场线的分别如图所示则下列说法正确中的是 A．a点的电势高于b点的电势  B．c点的电场强度大于d点的电场强度  C．若将一负试探电荷由c点移到d点电势能减少  D．若将一正试探电荷沿金属环的外表面移动半圈则电场力做正功

一个盒子里有7个苹果4个桃子8个梨如果任意拿出一个水果拿到的可能性最大．

下面图案中利用旋转设计的是

如图所示用两根不可伸长的细绳通过两个轻质光滑的定滑轮MN将AB两个相同小球与C球连接两定滑轮处于同一水平线上已知C球重力为G．静止释放ABC三个小球当三个小球运动至如图所示的位置时两绳与水平方向所成夹角θ＝60°C球的速度达到最大值vc．此时A球所受的拉力FA速度vA的大小分别为

把7本书放进3个抽屉不管怎么放总有一个抽屉里至少放进3本书．判断对错

解方程 2x+4.5×4＝72 75%x﹣45%x＝9.6 x9＝233

如图所示三个质量相同的均匀带电绝缘球ABC用三根轻质细线连接小球所在空间存在水平方向的匀强电场三根细线与竖直方向的夹角分别为30°45°60°不考虑小球之间的相互作用则下列说法中正确的是

3.25化成分数是它的分数单位是它含有个这样的分数单位再增加个这样的分数单位就能得到最小的合数．

下列图形中只有一条对称轴的图形是

两个大小不相等的圆大圆的周长除以它的直径所得的商小圆的周长除以它的直径所得的商．

压路机的滚筒滚动一周压过的路面就是压路机滚筒的

小刚在计算除法时把除数36写成了63结果得到的商是2还余18正确的商应是

在比例尺是112000000的地图上量得甲乙两地的距离是5厘米一列动车行完全程用了2.5小时求这列动车每小时行驶多少千米．

小军家三月份的总支出情况如图 1小军家这个月的总开支是多少元 2根据扇形统计图把下表填写完整．

脱式计算能简算的要简算． 6.3﹣2.9﹣7.1+5.7 15.72×+2.28÷ [1﹣+]× ×3.5+5.5×80%+0.8

18和24的最大公因数是5和35的最小公倍数是．

算出下面三角形中∠3的度数． ∠1＝62°∠2＝36°∠3＝° ∠1＝58°∠2＝20°∠3＝° ∠1+∠2＝∠3∠3＝°．

填上合适的单位课桌的高约是70一间教室占地约是60

要反映本周气温的变化情况用统计图最好．

YouprobablyknowwhoMarieCuriewasbutyoumaynothaveheardofRachelCarson.Oftheoutstandingladieslistedbelowwhodoyouthinkwasthemostimportantwomanofthepast100years? JaneAddams1860﹣1935 AnyonewhohaseverbeenhelpedbyasocialworkerhasJaneAddamstothank.Addanshelpedthepoorandworkedforpeace.Sheencouragedasenseofcommunity社区bycreatingsheltersandpromotingeducationandservicesforpeopleinneedIn1931AddamsbecamethefirstAmericanwomantowintheNobelPeacePrize. RachelCarson1907﹣1964 Ifitweren'tforRachelCarsontheenvironmentalmovementmightnotexisttoday.Herpopular1962bookSilentSpringraisedawarenessofthedangersofpollutionandtheharmfuleffectsofchemicalsonhumansandontheworld'slakesandoceans. SandraDayO'Connor1930﹣present WhenSandraDayO'ConnorfinishedthirdinherclassatStanfordLawSchoolin1952shecouldnotfindworkatalawfirmbecauseshewasawoman.ShebecameanArizonastatesenator参议员andin1981thefirstwomantojointheU.S.SupremeCourt.O'Connorgavethedecidingvoteinmanyimportantcasesduringher24yearsonthetopcourt. RosaParks1913﹣2005 OnDecember11955inMontgomeryAlabamaRasaParkswouldnotgiveupherseatonabustoapassenger.HersimpleactlandedParksinprison.ButitalsosetlfftheMontgmerybusboycott.Itlastedformorethanayearandkickedoffthecivil﹣rightsmovement.TheonlytiredIwaswastiredlrgivinginsaidParks. 1WhatisJaneAddamsnotedforinhistory? A.Hersocialwork B.Herlackofpropertraininginlaw C.Hereffortstowinaprize D.Hercommunitybackground 2WhatisthereasonforO'Connor'sbeingrejectedbythelawfirm? A.Herlackofpropertraininginlaw B.Herlittleworkexperienceincourt C.Thediscriminationagainstwomen D.Thepoorfinancialconditions 3Whomadeagreatcontributiontothecivil﹣rightsmovementintheUS? A.JaneAddams B.RachelCarson C.SandraDayO'Connor 4Whatcanweinferaboutthewomenmentionedinthetext? A.Theyarehighlyeducated B.Theyaretrulycreative C.Theyarepioneers D.Theyarepeace﹣lovers

Itwasthegirlssawtheoldmaninthemorninghewastakingawalk. A.whothat B.whowhen C.thatwho D.thatthat

小明参加市环保知识竞赛竞赛试卷的满分是80分小明得72分按这样计算如果竞赛试卷的满分是100分则小明应得分．

下图每个正方形的边长表示1厘米请按要求画图． 1画一个直角三角形它的直角顶点的位置A33两个锐角顶点的位置分别是B53和C36． 2画出这个三角形绕点A顺时针旋转90后的图形． 3按21画出旋转前的三角形放大后的图形．

在横线上填上＞＜或＝． 130﹣83﹣17130﹣83﹣17．

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. I'mgoingtovisitLEGOLAND®FloridaResortthissummerholidaywhereisamulti﹣dayvacationdestinationbuildingforkids2﹣12.I'mveryexcitedaboutthetripthatI'vebeenlookedforinformationaboutthisfantasticthemepark.LocatedinCentralFlorida'sWinterHaventheresortisjust45minutesfarfromOrlandoandTampa.Itincludesinteractive150﹣acrethemeparkwithmorethan50ridesshowsorattractionsinspiredbypopularLEGO®brandsandcharactersLEGOLANDWaterParkandafamousbotanicalgarden.LEGOLANDHotellocatedjuststepfromthethemeparkentrancefeatures152roomsandsuiteseachwithit'sownLEGOtheme.LEGOLANDBeachRetreatisalakefrontresortwith83themedbungalowsoffer166separaterooms.WithsomuchtoseeandexperiencethereIdoneedtohaveasmartplanofmytrip!

直角三角形的两个锐角的和一定等于90°．．判断对错

Shakespeare'sGlobeExhibition&TourisauniqueinternationalresourcetoexploreShakespeare'swork.Openallyearrounditgivesyouanopportunitytolearnmoreaboutthemostfamousplaywright剧作家Shakespeareandhelpsyouseektofurthertheexperienceandinternationalunderstandingofhim. GroupVisitstotheExhibition&Tour *OpeningHours TheatreTours Monday﹣Sunday930a.m.﹣500p.m. Exhibition Monday﹣Sunday900a.m.﹣500p.m. Groupsof15peopleormorearerequiredtopre﹣booktheirvisitandeachgroupwillhaveitsownguideforfree.TomakeareservationpleasefillinaGroupRequestFormandreturnittousviaemail. *ExhibitionandTourPrices Adult＄15.00 Senior60+＄13.50 StudentwithvalidID＄11.50 Child5﹣15＄8.00 ComplimentaryEvery16thpersonfree *Gettinghere Shakespeare'sGlobe21NewGlobeWalkLondonSEl9DTUK Wehavecurrentlyimprovedsecuritywithallbagsbeingchecked.Pleasearriveingoodtimeanddonotbringanylargebagsandcheckthecalendarbeforeyourvisitorcall+4402079021500tofindoutaboutourlatestopeningtimes. Visitorsareadvisedtoarrivebypublictransportorbytaxi.ThereisacarparkonThamesExchangeonthenorthsideofSouthwarkBridgeopen24hourssevendaysaweek.CabsmaybefoundallyearroundonSouthwarkBridge.ItmayalsobepossibletopickoneupfromoutsidetheentrancehallonNewGlobeWalk. *Wheretoeat SwanatShakespeare'sGlobeservesmodernBritishseasonalfoodfordinnerafternoonteaordrinksinourbeautifulbarandrestaurantsetovertwofloorsavailableforpre﹣andpost﹣theatredining. SwanRestaurant Monday﹣Friday12noon﹣230p.m.&600p.m.﹣1030p.m. Saturday12noon﹣330p.m.&600p.m. Sunday12noon﹣900p.m. 1Whencanyoupayavisittotheexhibition? A.Fridayat1200p.m. B.Mondayat800a.m. C.Saturdayat530p.m. D.Sundayat700p.m. 2Ifagroupof20childrenvisittheExhibition&Tourwhatisrequiredforthemtodo? A.Theyneedtohireaguidethemselves. B.Theymustbeaccompaniedbyanadult. C.Theyhavetopay＄160forticketsintotal. D.Theyneedtoemailforareservationinadvance. 3Whichofthefollowingappliestovisitors? A.They'reabletogetataxinearSouthwarkBridge. B.TheycanparkonthesouthsideofSouthwarkBridge. C.Theyarerequiredtodeposittheirbagsbeforeentering. D.It'smoreconvenienttodrivetherethantakingpublictransport. 4WhatcanweknowaboutSwanRestaurant? A.AfternoonteaisnotservedonSunday. B.Itservestraditionalseasonalfoodfordiner. C.Itisclosedfrom3p.m.to5p.m.onworkdays. D.Itservesthreemealsdrinksandafternoontea.

Theyarewtoeachotherforfearthattheywouldwakethesleepingchildrenup.

一杯糖水200克其中糖20克如果再往杯中放入50克糖此时含糖率为