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如图是化学小组对加碘盐在不同条件下碘损失率的研究结果，下列说法错误的是（ ）
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右图是某品牌加碘盐的标签请回答下列问题1存储方法中防潮湿说明该加碘盐具有的物理性质是2碘酸钾中钾元素
加碘盐就是在食盐中加入一定量的碘酸钾国家规定加碘盐标准是每1000g加碘盐中含有0.034g碘酸钾即
我国从1994年起推出加碘食盐工程目前加碘盐主要是在食盐中加入在酸性条件下碘化钾与其反应可生成碘单质
1碘元素对青少年智力发育影响很大加碘盐通常在食盐中加碘酸钾KIO3.如图是超市销售的一种加碘盐标签上
如图是加碘盐标签上的部分内容对该加碘盐的有关说法正确的是
食用该加碘盐能防止骨质疏松
这包加碘盐最少含碘酸钾10mg
该加碘盐中的“碘”是指碘分子
该加碘盐易溶于水并且高温加热会发生变化
烧菜时最好在何时加碘盐以减少碘的损失
烧菜前用碘盐爆锅
烧菜加水后
烧菜加水前
菜将出锅时
缺碘会引起碘缺乏病由于我国大部分地区存在缺碘情况所以国家强制在食盐中加入少量的碘强化剂如碘酸钾下列对
所有人都应该食用加碘盐，碘含量越高越好
甲亢患者不需食用加碘盐
碘过量和碘缺乏都会引起健康问题
非缺碘地区的居民不需要食用加碘盐
化学与健康密切相关下列说法正确的是
缺钙会导致贫血
吸烟对健康有危害
甲醛对健康无危害
碘只能通过加碘盐摄入
碘是人体必需的微量元素全民补碘经济有效的方法是食用加碘盐加碘盐中的碘元素以KIO3形式存在KIO3受
KI
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2
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近几年甲状腺结节的发病率持续上升有专家认为沿海地区海产品里已含碘加上平时食用的又是加碘盐可能会引起碘
多食用加碘盐，以确保人体对碘的摄入量ks5u
加碘盐中加入的是碘酸钾
加碘盐中不能同时加入碘酸钾和碘化钾
加碘盐中加入的是单质碘
2.00分近几年甲状腺结节的发病率持续上升有专家认为沿海地区海产品里已含碘加上平时食用的又是加碘盐
多食用加碘盐，以确保人体对碘的摄入量
加碘盐中加入的是碘酸钾
加碘盐中不能同时加入碘酸钾和碘化钾
加碘盐中加入的是单质碘
碘是人体必需的微量元素全民补碘经济有效的方法是食用加碘盐加碘盐中的碘元素以K1O3形式存在其中碘元素
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化学源于生活柴米油盐中蕴涵许多化学知识请填空 1打开汽水瓶盖时汽水会自动喷出说明气体的溶解度与有
碘是人体中不可缺少的微量元素食盐中加入碘元素能有效防止缺碘引起的疾病以前在食盐中加入碘化钾KI放置一
右图是加碘盐标签上的部分内容对该加碘盐的有关说法正确的是
食用该加碘盐能防止骨质疏松
这包加碘盐最少含碘酸钾10mg
该加碘盐中的“碘”是指碘分子
该加碘盐易溶于水并且高温加热会发生变化
2011年3月11日的大地震使日本核电站发生核辐射泄漏我国香港和内地出现抢购碘盐的疯狂热潮用于防护核
如图是某品牌加碘盐的标签.请根据图示信息回答下列问题1该加碘盐属于填纯净物或混合物.2标签上的碘含量
碘元素对青少年智力发育影响很大加碘盐通常在食盐中加碘酸钾KIO3.如图是超市销售的一种加碘盐标签上的
碘是人体必需的微量元素之一当人体缺碘或碘含量过多时都会引起人体的疾病因此我国政府从1994年起推出全
2011年3月11日的大地震使日本核电站发生核辐射泄漏我国香港和内地出现抢购碘盐的疯狂热潮用于防护核
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在如图所示的眼睛及矫正的示意图中下列说法中正确的是
Inourdailylifeweneedlearnmanygoodthings.Toforgiveisoneofthem.Weknowitisavirtuebutnoonehaseversaiditiseasy.Whensomeonehasdeeplyhurtyouitcanbeextremelydifficulttoletgoofyourhate.Howeverforgivenessispossibleanditcanbesurprisinglybeneficialtoyourphysicalandmentalhealth.Peoplewhoforgiveshowlesssadnessangerandstressandmorehopefulnessaccordingtoarecentresearch. 1.Trythefollowingsteps Trytocalmyourself.2.Youcantakeacoupleofbreathsandthinkofsomethingthatgivesyoupleasureabeautifulsceneinnatureorsomeoneyoulove.Don'twaitforanapology.Manytimesthepersonwhohurtyoudoesnotintendtoapologize.Theymayhavewantedtohurtyouortheyjustdon'tseethingsthesameway.3.Keepinmindthatforgivenessdoesnotnecessarilymeanbecomingfriendsagainwiththepersonwhoupsetyou. Takethecontrolawayfromyouroffender冒犯者.Rethinkingaboutyourhurtgivespowertothepersonwhocausesyoupain.Insteadoffocusingonyourwoundedfeelingslearntolookforthelovebeautyandkindnessaroundyou.4.Ifyouunderstandyouroffenderyoumayrealizethatheorshewasactingoutofunawarenessfearandevenlove.Youmaywanttowritealettertoyourselffromyouroffender'spointofview. Don'tforgettoforgiveyourself.5.Butitcanrobyouofyourself﹣confidenceifyoudon'tdoit. A.Howshouldyoustarttoforgive? B.Forsomepeopleforgivingthemselvesisthebiggestchallenge. C.Tomakeyourangerdieawaytryasimplestress﹣managementtechnique. D.Whyshouldyouforgive? E.Trytoseethingsfromyouroffender'sangle. F.Recognizethebenefitsofforgiveness. G.Ifyouwaitforpeopletoapologizeyoucouldbewaitinganawfullylongtime.
小亮想探究电流通过导体时产生的热量Q与导体电阻R的关系．他选用了以下实验器材两个完全相同的烧瓶烧瓶内分别装有质量和初温均为t0的煤油相同的温度计A和B阻值为R1和R2的电阻丝R1＜R2还有满足实验要求的电源滑动变阻器开关导线．他连接了如图所示的电路进行了如下实验闭合开关通电一段时间后记录下温度计A的示数为t1温度计B的示数为t2发现t1﹣t0＜t2﹣t0．请根据以上叙述回答下列问题 1小亮计划探究的问题中自变量是． 2为便于测量因变量将其转化为观察操作定义． 3通过上述实验现象小亮得到的结论是． 4若小亮继续研究电流通过导体产生热量Q与电流I的关系在不改变原电路的情况下除了需要添加停表之外还需要添加的测量器材是．
如图所示现象中利用做功使物体内能增加的是
如图所示的电阻箱的示数为Ω．
“道路千万条安全第一条”．为了保证道路的交通安全现在许多道路上都会安装有电子眼．如图甲所示是某十字路口处安装的“电子眼”图乙为“电子眼”监督路面交通情况时拍下的照片．下列分析正确的是
ThesecondMondayinOctoberintheUnitedStatesisColumbusDay.Itisafederalholiday.TheholidayhonorsthefirstvisittoAmericabytheItalianexplorerChristopherColumbus.ColumbusthoughthecouldreachtheFarEastbysailingwestacrosstheAtlanticOceanfromEurope. Hewasright.Buthewasalsowrong.Hethoughttheworldwasmuchsmallerthanitis.HedidnotimaginethatanothercontinentandanotherhugeoceanlaybetweenEuropeandEastAsia. ColumbusandhiscrewarrivedinOctober1492onanislandtheycalledSanSalvadorintoday'sBahamas.ColumbusbelievedthesewerethecoastalislandsofEastAsiaandthencalledtheIndies.ThatiswhyhecalledthepeoplewholivedontheislandsIndians.HerefusedtoaccepthewaswrongaboutthegeographyeventhoughlocalplantswhereheexploredwereunknowninEuropeorAsiaandnativepeopledidnotunderstandanylanguagesspokenintheEast. ManypeoplehavepointedoutthatChristopherColumbusneverrecognizedwherehereallylanded.OtherEuropeanexplorer.sdidlandinwhatisnowtheUnitedStates.ButnotColumbus.MoreimportantlysomesayColumbusdidnotdiscoveranewworldmanynativepeoplealreadylivedhere. CriticsofColumbusDayalsostronglyobjecttotheholidaybecauseColumbustreatednativepeoplecruelly.HeimprisonedsomeoftheWestIndiansforcingthemtoservetheEuropeansorsearchforgold.Hecontrolledpartsofthepopulationwithviolenceandoppression.InadditionColumbusandhisfellowEuropeanvoyagersforcednativepeopletoacceptChristianity.Andtheybroughtnewdiseasesthatsickenedandkilledmanyofthenativepeople.Columbus'arrivalintheCaribbeanwasdestructivetothepeoplethere. EventhoughColumbusDayisoneofthemostdoubtfulholidaysintheU.S.calendarscholarssaytheoriginsofColumbusDayaimedtobringAmericanstogether.In1892PresidentBenjaminHarrisoncalledonthecountrytoobserveColumbusDayandtoreflectontheirachievementsinthe400yearssinceColumbuslandedinSanSalvador. 32.WhydidColumbusfailtoreachtheFarEast? A.Hewentinthewrongdirectionofhisvoyage. B.Helackedenoughgeographicknowledge. C.Hrstheoryprovedtobewronginpractice. D.Hedidn'thavegoodenoughimagination. 33.WhichofthefollowingbestdescribesColumbus? A.Cautious. B.Honest. C.Stubborn. D.Modest. 34.WhatdoesParagraph5mainlytalkabout? A.GreatharmColumbusbroughttothenativepeople. B.VariousChangessinceColumbuslandedthere. C.ThewayhowColumbuscontrolledthenativepeople. D.ConflictsoccurringbetweenColumbusandthenatives. 35.WhatwastheoriginalpurposeofcreatingColumbusDay? A.TohonourtheUnitedStates. B.Togetrelaxedfromwork. C.TouniteAmericanpeople. D.ToshowprogressofAmerica.
小明在实验室测量牛奶的密度．小明先将牛奶倒入烧杯用调节好的天平测量出牛奶和烧杯的总质量为93.5g接着小明将烧杯中的部分牛奶倒入量筒中如图甲所示则量筒中牛奶的体积为cm3．然后他用天平测量烧杯和剩余牛奶的总质量天平平衡时的情景如图乙所示则烧杯和剩余牛奶的总质量为g．请你根据以上实验数据计算出牛奶的密度为kg/m3．
如今旅游成为了人们放松休闲的一种方式但是同时出现了一些不文明的行为比如乱涂乱画乱扔垃圾等.请你就这种不文明现象写一篇发言稿.内容应包括 1.游客的一些不文明的行为 2.树立良好形象从我做起 3.增强环保意识制止不文明行为. 注意1.词数100左右 2.可以适当增加细节以使行文流畅. 参考词汇不文明行为uncivilizedbehavior刻画scratch .
Ifyoucaneasilyearn2500USDhowwouldyoufeel?Allyouhavetodoistositaroundandwaitforyourmeals.There'sacatchhowever.Youhavetostayinachickencagewithastrangerforawholeweek.Therearenobooksortelevisionorradioforawholeweek.Therearenobooksortelevisionorradioforamusement.Youcan'tleaveuntiltheweekisup.Andacamerawillberecordingyoureverymove. TheideacamefromRobThompsonavideoartist.Hewantedtomakeafilmaboutthewayanimalsaretreated.Hisgoalwastoraisepeople'sawareness认识ofthelivingconditionsofanimalsthatareraisedforfood.Hedecidedtopay5000USDoutofhisownsavingstotwopeoplewhowerewillingtolivelikechickensforaweek. ToRob'ssurprisequiteafewpeopleansweredhisadvertisement.Finallytwopeopletookthisexperiment.TheyareErica24﹣year﹣oldrestaurantworkerandPama27﹣year﹣oldchemist.Theplanwasforthemtospendsevendaystogetherinachickencagethatwassixfeetlongandthreefeetwide.Acamerawouldrecordtheirexperiencewhichwouldtakeplaceinanartmuseum. Theweekwaslonganddifficult.Theysleptonahardwoodenfloor.Theycouldn'tstandupwithoutbangingtheirheads.Theyatemashakindoffoodforanimalsanddrinkwaterfromagardenpipe.Theironlyprivacy隐私wasatoiletsurroundedbyacurtain.Therewerenosinksmirrorsortoothbrushesinthecage.VisitorswhocameherewerewarnedDonotfeedthehumans. AftertheweekPamandEriccameoutofthecage.Theyhadsurvivedtheweekandtheyeachhada2500USDcheckintheirhands.WhenRobThompsonopenedthecageEriccameoutchangedintocleanclothesandateachocolatebarrightaway.It'sgreatformetobeabletostandup.hesaid.Pamjustchangedherclothesandleft.Afteraweekofvisitorsandreporterswatchinghershedidn'twanttotalktoanyone. 1TheunderlinedwordcatchinParagraph1probablymeans. A.unsolvedproblem B.hiddendifficulty C.surprisingwonder D.unbelievablecondition 2RobThompsonofferedthejobinorderto. A.Showhowterriblysomeanimalsaretreated B.Makeafilmabouthumansandanimals C.Experimentonhowlongahumancanliveinacage D.Advertiseforhisexperimentaboutanimals 3WecaninferfromthepassageWhatmadeitthemostdifficultforthetwotostayinthecage? A.Thattheycouldn'tliedowntosleepinthecage. B.Thattheydidn'thavemeattoeat. C.Thattheyhadtodoalmosteverythinginpublic. D.Thattheyhadnothingforfun. 4Whatwouldbethebesttitleforthispassage? A.AnEasyWaytoEarn﹩2500 B.LivingLikeaChicken C.GettingAlongWellAnyway D.DoNotTreatAnimalsBadly
AfternoticingthathereightgradestudentshadproblemsfocusingduringmathclassaNorthCarolinateacherdecidedtochanneltheirenergyinadifferentway﹣cycling. Itdoesn'tsoundlikethemostcommonthingtododuringmathclassbutBethanyLambethateacherfromWakeCountysaysthateversinceshefixedcyclingmachinesunderherstudents'deskstheyaremorefocusedandmostimportantlytheyarenolongerfidgeting烦躁allthetime. Beforetheyweredrummingontheirdeskstheyweretouchingotherpeopletheydon'tdothatanymore.Theirfeetaregettingthemovementoutshesaid.Therehasbeenahugeincreaseinthequalityofourstudent'sworkandadecreaseintheamountofmissingwork. Lambethfixedthecyclingmachinesattheendoflastyearpayingaround$150foreachwhichincludesawarranty授权.Thecostwascoveredbydonationsandamoneyfromthe4﹣Cfund.Notax﹣payermoneywasusedbutjudgingbytheresultsobservedbytheWakeCountyteacherthismightbeasolutionauthoritiesmightwanttolookinto.AfterlearningaboutthesuccessofLambeth'sprojectschoolofficialsareparticularlyexcitedabouttherolecyclingmachinescouldplayinSpecialEducationclasses. Thekidsobviouslylovethenewtoys.SofiaFedeleoneofLambeth'sstudentssaidcyclinghelpsherfocusonherworkduringclass.Iusuallytapmyfeetandsoonjustbecauseitkeepsmefocusedshesaidaddingthatpedaling踩踏板ismuchbetter.Itkeepsmeexercisingandfocused. 29.WhydidLambethfixcyclingmachines? A.Todirectstudents'energy. B.Togetonwellwithstudents. C.Toraisestudents'healthconsciousness. D.Toprovidestudentsawaytoloseweight. 30.Whatwilltheschooldonext? A.ToraisemoremoneyforLambeth. B.Toobservetheeffectofcyclingmachines. C.Tofixmorecyclingmachinesintheclassrooms. D.Tocallonparentstofixcyclingmachinesathome. 31.WhatdoesSofiaFedelethinkofpedaling? A.Disappointing.B.Useless.C.Exciting.D.Beneficial.
实验课上老师要求在黑板上画出一条水平线聪明的小华和小刚找来一根透明软管将软管的两端向上抬起后加入适量的水待里边的水不动时在两边液面处各点一点作为标记利用直尺将两点用一条直线相连画出了水平线如图所示．他们的方法是利用了的原理．
小明体重600N用由AB两个滑轮组成的滑轮组向上提升1000N的重物C如图所示．提升的过程中小明用大小为550N且竖直向下的力拉动绳子使物体C以0.4m/s的速度匀速上升．若不计绳重及轮与轴的摩擦则下列说法正确的是
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短文.短文中共有10处错误每句中最多有两处.错误涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在此符号下面写出该加的词. 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. TodaywasSundayandmyauntinvitedmetoherhomeinthecountryside.Shewantedtoopenagrocerystoreorholdanopeningceremony. Iwenttherebybusearlyinamorning.Onmyarrivalmanypeoplehadgatheredtheremostofthatwereherfriendsandrelatives.Theyallcametosaycongratulation.Hershopwasquitebeautifuldecoratedwithcolourfulflags.Shealsodressingmeinnewclotheswitharedbelton. Whentheceremonystartedwefiredmanyfireworks.Hisauntmadeashortspeechsayingthankstheguests.Latershetreatedasmewithadeliciousmeal.Iwishherasuccessbusiness.
如图所示小宁利用该实验电路测量未知电阻Rx的阻值．电源两端电压不变滑动变阻器的最大阻值为R0．当只闭合开关S滑动变阻器的滑片P滑到最右端时电流表示数为I1当滑动变阻器的滑片P滑到最左端时电流表示数为I2．下列四个选项中Rx的表达式正确的是
在紧张的高三备考阶段英语杨老师为了提高复习效率广泛征求学生意见并借此训练学生的书面表达能力.假如你叫李阳请根据以下提示给老师写封信表达你的需求和建议. 写作要点 1.为夯实基础适当放慢进度留出思考和消化的时间 2.请反复训练易错的知识点提供典型试题 3.指导写作方法 4.……个人补充 注意 1.短文必须包括以上要点以及个人的补充要求或建议不要逐句翻译可适当增加细节以使行文连贯. 2.词数100个左右.开头已给出不计词数. 提示词夯实的基础asolidfoundation消化digest DearMr.Yang Thankyouforprovidinguswithanopportunitytoshareourviews. Inthecourseofthegeneralrevision Yours LiYang
Belowaresomebestspecialinterestingholidays﹣allarenewfor2016andhavehighqualityguidesortutorsandstrongprogrammes. 1.HollandinbloomrivercruisewithAlanTitchmarsh AlanTitchmarshisthestarattractiononthisrivercruise.AlanjoinsyouforavisittothemagnificentKeukenhofGardens﹣hometo800varietiesoftulips郁金香.TheTelegraph'sgardeningexpertwilltalkaboutthebestnewvarietiesandthegarden'shistory. April19£1495includingflightsfromtheUKandsomemeals.TelegraphTours01612362444telegraph.co.uk/titchmarshtour. 2.MoroccoSketchbook LedbyartistMaxineReltonthistourtakesinMarrakeshhelpingyoudevelopyourdrawingskills.Rapidlineandfiguredrawingandcolourmixingareallcoveredandtheeight﹣dayholidayisbasedinKasbahduToubkal. May8£2495includingsomemeals.SteppesTravel01285601495steppestravel.co.uk. 3.BallroomandLatinAmericandancinginTenerife ThistravelprovidesdailydancetuitionwithDavidBowiewho'llbeonhandtoteachdancingtechniques.Itisaimedbothatthebeginnersandmoreexperienceddancerslookingtoimprovetheirskills.There'llalsobetimetoexploretheislandonfootorplayaroundofgolf. April26£769full﹣board.Saga08000960084travel.saga.co.uk. 4.FishinginNorthernArgentina Thisnine﹣dayflyfishingandconservationtourtakesintheIberáMarshlandstheworld'ssecondlargestwetlands.HereexpertfishermanCharlesJardineistheguideasyoufish.BasedinEstanciaRincondelSocorrotheholidayalsoincludesopportunitiesforhorseridingandbird﹣watching. October15£5095full﹣board.Cazenove+Loyd02038135082cazloyd.com. 1WhomightbeinterestedintheMoroccoSketchbookholidaytrip? A.Amateurpainters. B.Birdwatchers. C.Sportslovers. D.Photographicamateurs. 2Whichnumbershouldyoucallifyouwanttoimproveyourdancingskillsonthetrip? A.01612362444 B.01285601495 C.08000960084 D.02038135082 3Onwhichtripcanpeopleridehorses? A.MoroccoSketchbook. B.FishinginNorthernArgentina. C.BallroomandLatinAmericandancinginTenerife. D.HollandinbloomrivercruisewithAlanTitchmarsh. 4Whatcanweknowfromthepassage? A.MaxineReltonisanexpertfisherman. B.MoroccoSketchbooklaststhelongest. C.TwoholidaystakeplaceinApril. D.ThetripsledbyartistCharlesJardineisthemostexpensive.
某学习小组在校外做声学实验他们在一段新修的平直公路上每隔100m设置一个测试位置分别是OABCDE如图所示．起点O处的同学手持发令枪负责产生声音其他测试点各有一名同学背对发令者听到枪声后迅速举起手中红旗．观察员看到发令枪冒烟开始计时看到E处同学举旗计时终止．在一次测试中观察记录的时间是1.54s忽略光传播的时间所测出的声音的速度是m/s结果保留整数．E处同学听到的声音和A处同学听到的声音选填“音调”“音色”或“响度”明显不同．
IwascomingbackfromhomelateatnightinaSharingminivan面包车.InHyderabadIndiaitisa41andquickwayoftransport.Thevandriverscarryasmanyas13people42inavehiclewhichisbuiltforthe43of8people.Ourvanwasover44aswell.Peopleweregettingoffandonatmany45. Onegirlsignaledthedriverto46.Shegotoutofthevan.Whilegettingdownsheslippedandfell.Noneofusnoticeditasitwas47.Thedriverwaswaitingforhertopay.Itwasthenthatwesawthatthegirlwasonherkneesbythesideoftheroad.Another48andIgotdownandheldherup. 49inpainsheheldupanoteandaskedusto50thedriver.Theotherpassengertookthenoteandpaidthedriver.Mystopwasafewhundredmetersaway.Idecidedto51hertillshewasreally52.Ipaidupthedriverformyselfandhetookoff. IneitherknewhernordidIknow53todo.ButIwastheresayingsomecomfortingwordstoa54inpain.Sometimelaterherfriend55us. Wemadehersitinthenearbygrassandherfriendrushedtogetwater.Inthemeantimeshe56herleg.Itlookedlikeaminorsprain扭伤.Onceherfriendcamebackthey57acarandrushedtoanearbyclinic.She58meandsaidtheycouldmanageasitwasonlyaminorsprain. IdonotknowifIdid59ButIfeelIgavesome60toherinasmallway. 41.A.expensive B.pleasant C.cheap D.dangerous 42.A.attimes B.onpurpose C.atpresent D.bychance 43.A.comfort B.convenience C.rest D.transport 44.A.furnished B.crowded C.used D.loaded 45.A.cities B.places C.factories D.chances 46.A.stop B.help C.continue D.notice 47.A.unusual B.distant C.late D.dark 48.A.driver B.nurse C.passenger D.conductor 49.A.Ever B.Even C.Never D.Yet 50.A.judge B.reward C.employ D.pay 51.A.takewith B.pickup C.staywith D.turnto 52.A.fine B.awake C.healthy D.energetic 53.A.when B.where C.why D.what 54.A.friend B.stranger C.partner D.teenager 55.A.ignored B.concerned C.joined D.calmed 56.A.examined B.protected C.touched D.treated 57.A.sent B.bought C.shared D.hired 58.A.questioned B.thanked C.praised D.honoured 59.A.enough B.right C.exactly D.rudely 60.A.encouragement B.respect C.comfort D.determination
关于分子动理论和内能下列说法中正确的是
如图所示的电路是由两节干电池一个开关两只小灯泡和几根铜导线组成小灯泡L1和L2分别标有“2.5V0.3A”“3.8V0.3A”．当开关闭合后小灯泡均发光下列说法正确的是
随着低碳理念的不断深入自行车成为绿色出行的重要交通工具．下列有关自行车为了减小摩擦的是
ToaChineseEnglishisnotsoeasytolearn.LikealltheotherEnglishlearnersI1meetmanydifficultiesinthepastsevenyearsinlearningEnglish.ButImanaged2overcomethemandmakemuchprogress. IcanwellrememberthatthespellingandmeaningofwordsisthefirstdifficultyImetasabeginner.ButIfoundoutmyownwaytodealwiththem.AstospellingInevercopied3newwordagainandagaintorememberit.AstomeaningIrarelyreciteitsChinese4translatebutoftenputthewordintothesentencetolearnitsmeaning.Moreover5youuseawordquiteoftenitsspellingandmeaningwillbenoproblem.AfterallwearelearningEnglishinordertospeakitortouseit.Grammarandidiomsmaybeanother6difficult.ButIhavealsogotoverit.Ihavenotreadlotsofgrammarbooks.Ionlyknowsomeordinarygrammaticalrules.BydoingsoIcometotasteoutasenseofEnglishlanguage.Icanfeel7asentenceisgoodEnglishornot.8finalIwanttosaythatovercomingallthesedifficultiesneedsperseverance.EverydayIspentatleastanhour9Englishinthepastsevenyears.Ibelievethisisanimportantreason10I'mabletomakeprogressinlearningEnglish.
TipsforShorteningHomeworkTime Homeworkcanbealonghardtaskformanystudents.36Stayingfocusedonthetaskathandwhileavoidingdistractions干扰isanotherstrugglethatmanystudentsface. Herearesomestrategiesyoucantrytomakehomeworktimeshorterandeasier. 1.Powerdownelectronics.Whilestudentsthinktheymayneedtheircomputersforcompletingtheirassignmentsdevicescanoftenbemoreofadistractionthanhelpfultoolsforgettinghomeworkdonequickly.37 2.Getalittleexercise!Beforebeginninganyhomeworktryhavingyourchilddancetomusicorevendoafewpush﹣ups.38Theywillalsohelpstudentsfinishhomeworkinamoreefficientmanner.Whilesomestudentsarefinestartingtheirworkrightafterschoolothersbenefitfromthistypeofphysicalactivitybeforebeginningtheirschoolwork. 3.39Somestudentsmightpreferadeskintheirroomwhileothersmayuseatableinanofficespaceorplayroom.Anyofthesechoicesworkfineaslongastheyareinaquietareawithminimalnoise. 4.Arrangebreaktimeswisely.40Andtheywillrewardthemselveswithabreakaftereachpartiscomplete.Forinstancetheymightstartwiththeirfirstassignment.Oncethatiscompletetheycangivethemselvesafive﹣minutebreakforasnack.Butmakesurethebreakdoesn'textendbeyondthelimitedtime. Withthesestrategiesyourchildwillbecomemoreefficientandcancompletehomeworkmuchfaster. A.Findaquietareatowork. B.Lookforadeskoratabletouse. C.Studentsoftendividetheirhomeworkassignmentsintoseveralparts. D.Thesetypesofphysicalexerciseswillhelpincreasealertnessandfocus. E.Doingsomephysicalexercisescancontributetogoodhealth. F.Sometimesthesimpletaskofsittingdownandgettingstartedcanbeachallenge. G.Encourageyourchildtopowerthemoffandonlyusethemwhennecessary.
某兴趣小组的同学想利用热敏电阻制作一个简易电子温度计．他们首先测量了该热敏电阻R的阻值随温度变化的关系并绘制成如图甲所示的图象．然后找来一台电压恒定的电源一块电压表定值电阻R0开关和一些导线按照图乙所示的电路连接制作成一个电子温度计．关于这支电子温度计下列说法正确的是
在做“探究平面镜成像特点”的实验时如图所示． 1实验时选棋子A为物体选择薄玻璃板做平面镜而不用镜子其目的是为了能在A棋子这一侧看到选填“A的像”或“棋子B”便于确定像的位置． 2在实验过程中将棋子A放在玻璃板的一侧棋子B放在玻璃板的另一侧．一边移动棋子B一边用眼睛选填“透过玻璃板”或“直接”观察B直至B与A的像完全重合时停止移动棋子B． 3取下棋子B在棋子B的位置平行于玻璃板竖直放一张白纸发现白纸上并不能直接看到棋子A的像可知平面镜所成的像是选填“虚”或“实”像．
AnewmovieThe33tellsaboutthefamous2010miningaccidentinChile智利.The100﹣year﹣oldSanJosecopperandgoldminecollapsedovertheheadsof33mineworkers.Thecollapselefttheminers700metersunderground. Thefilm'sdirectorPatriciaRiggenattemptstorevisitthedaysofsufferingforthemenbelowandtheirfamiliesabove. FiveyearsagolackofsafetywasanacceptedfactoflifeattheSanJosemine.Inthefilmthe33menstarttheirlonganddifficultfallthroughatunnelintotheirworkarea.Butbeforetoolongdisasterstruck.Afterthetunnelcollapsetheminerscrowdintoafive﹣meterwidespacebuilttohold30men. Theyhaveonlythreedays'worthoffood.Theyhavetorationitcarefullyiftheyplantosurvivedownhereuntiltheyarerescued. Thefilmisdividedintotwoseparateworlds.Oneistheminers'largecavewherefeelingsofhungerandhopelessnessgivewaytoprayer.TheotherisCampHopeatemporarycampoffamiliesoutsidethemine'scollapsedentrance. AntonioBanderasplaysminerMarioSepulveda.MariaSegoviaisthesisterofoneofthemenSheisascentraltotheminers'rescueasMarioSepulvedaisinsidethemine.ActressJulietteBinocheplaysMaria. WithfamilyfriendsandtheworldwatchingtheChileangovernmentorderedrescuecrewstokeepworkingdayandnight.After17dayscrewsreachtheminers.Thefilmthenshowsthetechnicallydifficultanddangerousoperationofbringingthementothesurfaceonebyone. The33runslikeadisastermovie.Itsspecialeffectsandthehumaninteractionsinsideandoutsidethemineaddtothetension.Itisthememoryoftheactualminedisasterandrescueoperationthataddsseriousnesstothemovie. 25.Whatwastheproblemwiththeoldmine? A.Itwastoooldtocontinuedigging. B.Ithadpossiblesafetyrisks. C.Itlackedmeasurestorescue. D.Ithadtoosmallaplaceforminers. 26.TheunderlinedwordrationinParagraph4canbereplacedby. A.keep B.prepare C.eat D.share 27.Whatatmospheredidthefilmtrytocreate? A.Exciting. B.Terrible. C.Hopeless. D.Nervous.
Anappleadaybringsmoreapplesyourway Wehaveallbeentoldnottoshopon61emptystomachbutwhatothertipscanhelpusshopandconsequentlyeathealthier?Nowresearchershavefoundthatshoppersarelikely62buymoreproducewhentheyeatahealthyitembeforeshopping. Inthestudy120shopperswere63randomgivenanapplesampleacookiesampleornosampleatthestartoftheirshoppingtrip.Theresearchersthentrackedtheirpurchasesandfoundthatthosewhoweregiventheapplesample64buy28%morefruitsandvegetablesthanthose65giveacookiesampleand25%morefruitsandvegetablesthantheshopperswhogotnosample.Researchersexplained66thistaughtuswasthathavingasmallhealthysnackbeforeshoppingcanputusinahealthiermindsetandsteerustowardsmakingbetterfoodchoices. In67concludeforconsumerstheresearchersrecommendpeoplehaveasmallhealthysnacklikeapieceoffruitbeforeshopping.Notonlywillithelpdecreasehungeritmay68motivateyoutoselecthealthieritems.Forgrocerystorestheysuggest69encouragepeopletobuymoreproduce70offeringsamplesoffruitsandvegetablestoshoppersuponenteringthestore!.
Asweallknowveryfewpeopleenjoyexams.Thatdoesn'thavetomeanthatyoushouldbeafraidofthemthough.Thefollowingtipswillhelpyougetthroughthatterribleexamperiod. Hereareeightstepstohelpyouduringexams 1.Makesureyouknowhowmuchtimeyouwillhaveintheexamandhowmanyquestionstherewillbe.Thenyoucandivideyourtimeamongthequestionstomakesurethattheyallgetanswered. 2.Whenyou'redoinganexamthatinvolves涉及longanswersitisagoodideatoleavesomespaceattheendoftheanswersothatyoucanaddanyextracommentsthatmightcometomindwhenyourereadyourpaper. 3.Don'tspendallofyourtimeonlyonquestionsthatyouknowtheanswerbecauseyouwillgetaworsemarkforansweringsomequestionsverywellandsomenotatall. 4.Itisworthtakingalittleextratimetomakesurethatyourhandwritingisneat.Thentheexaminerwillbeabletoreadit!Trytoavoidspellingmistakestoo! 5.Themorepreparedyouarethemorelikelyyouaretosucceed. 6.Keepcalm.Ifyoufeelyourselfgettingworriedtakeadeepbreath. 7.Don'ttrytodiscusstheexamafteryou'vefinishedit.Ifyou'vegotdifferentanswersfromyourfriendsthere'snopointworryingaboutit. 8.Onceanexamisoverjustforgetaboutit.Thereisnothingmoreyoucandoaboutit.Thebestthingyoucandoistogohomeandprepareforthenextone. 1Thepassageisprobablywrittenfor. A.peoplewhomarkexampapers B.languagelearners C.highschoolteachers D.peoplewhotakeexams 2Youcangetabettermarkif. A.yougooveryournotescarefullyfortheexam B.youdiscusstheanswerswithyourfriendsafterexams C.youspendallofyourtimeonquestionsthatyouarenotgoodat D.youspendmostofyourtimeonquestionsthatyouknowwell 3Theunderlinedwordavoidinthepassagemostprobablymeans. A.thinkabout B.goover C.preventsomethingfromhappening D.checkout
在如图所示实例中属于增大压强的是
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