计算：+（π﹣3）0﹣（﹣）﹣2＝　 　．

计算-2+-+1×0

化学是一门以实验为基础的科学实验安全与规范至关重要．回答下列与加热操作相关的问题．加热试管内液体时液体不能超过试管容积的

计算x3·x56

Thepolicemancaughttwoboysyesterday.Theystealtwomobilephones.

若有点AB坐标分别为3223则下列说法正确的是A．AB为同一个点B．AB的纵坐标相等C．AB为不同的两点D．以上说法都不正确

在测定额定电压为2.5V小灯泡电功率的分组实验中1请用笔画线代替导线将图甲中的实物电路连接完整．2小金闭合开关后发现灯泡不亮电流表无示数电压表有示数则故障可能是．排除故障后移动滑片使小灯泡正常发光此时电流表示数如图乙所示则小灯泡额定功率为W．3小华在进行实验数据处理时算出了小灯泡的平均功率如下表其他同组同学都认为这样处理数据是不合理的他们的理由应该是．

计算-5×-3+-7×-3+12×-3

如图在Rt△ABC中∠ACB＝90°AC＝BC＝1将Rt△ABC绕点A逆时针旋转30°后得到Rt△ADE点B经过的路径为则图中阴影部分的面积是

1分﹣﹣﹣Jackyouswamverywell.Whotaughtyou? ﹣﹣﹣Nobody.Itaught. A.I B.me C.myself D.mine

1分Ilikethissong.It'sbyoneofmyfavorite_. A.singers B.dancers C.painters D.writers

isafestivalwhenpeopleusuallyeatmooncakesandadmirethemoon.A.TheDragonBoatFestival B.TheSpringFestivalC.TheLanternFestival D.TheMid-Autumnfestival

计算1-aa+1a2+1a4+1

ReadingEnglish  everymorningisagoodwaytoimproveourspokenEnglishsowehaveEnglishmorningreadings.

HelosthissIDcard.

甲乙两个完全相同的杯子盛有不同浓度的盐水将同一个鸡蛋先后放入其中当鸡蛋静止时两个杯子中液面恰好相平鸡蛋所处的位置如图所示则 1甲杯底部所受的液体压强乙杯底部所受的液体压强．选填＜＝或＞下同 2鸡蛋在甲杯中受到的浮力在乙杯中受到的浮力．

如图抛物线y＝ax2+6x+c交x轴于AB两点交y轴于点C．直线y＝x﹣5经过点BC． 1求抛物线的解析式 2过点A的直线交直线BC于点M． ①当AM⊥BC时过抛物线上一动点P不与点BC重合作直线AM的平行线交直线BC于点Q若以点AMPQ为顶点的四边形是平行四边形求点P的横坐标 ②连接AC当直线AM与直线BC的夹角等于∠ACB的2倍时请直接写出点M的坐标．

1分每个人都应该在环保方面发挥作用.play Evervoneshouldtheenvironmentalprotection.

We'lltrytodotheworkwithmoneyandpeople.A.less;less B.fewer;more C.more;fewer D.less;fewer

从化学的角度认识我们身边的物质往往有不同的发现．回答下列与空气相关的问题．一定条件下可将空气转化为液态该过程属于选填物理或化学变化

ChristmasfallsonDecember25.Familymembersgettogethertohavefunthatday. A.a B.an C.the D./

1分﹣﹣﹣Yournewbikeissonice!Whendidyoubuyit? ﹣﹣﹣InJuly.Iitfortwoweeks. A.had B.havehad  C.havebought D.bought

在平面直角坐标系xOy中抛物线y=2x2+mx+n经过点A0-2B34．1求抛物线的表达式及对称轴2设点B关于原点的对称点为C点D是抛物线对称轴上一动点且点D纵坐标为t记抛物线在AB之间的部分为图象G包含AB两点．①画出图象G②若直线CD与图象G有公共点结合函数图象求点D纵坐标t的取值范围．

Excuseme.Couldyoutellmethewaytothemuseum?Themanaskedpolite.

如图在矩形ABCDAD＝AEDF⊥AE于点F．求证AB＝DF．

Inmyopinionthetolanguagelearningistopracticeasmuchaspossible.A.address B.secret C.course D.knowledge

1分Kenwas_lateforschool.Thebellrangrightafterheenteredtheclassroom. A.still B.always C.already D.almost

IthinkBobisasmartboy.Healwayshascreateideas.

8分SchoolActivitytheExerciseMonth AnumberofimportantschoolactivitiesarecomingupandthebiggestoneistheExerciseMonth. Whatisouraim目的? TheExerciseMonthisorganisedbytheYouthSportsClub.Themainaimofthisactivityistoimproveourschoolmembers'knowledgeabouttheimportanceofexercise. Whatareouractivities? TheExerciseMonthwilltakeplacefrom15Decemberto15January.Duringthismonthalotofactivitieswillbeheldtoshowtheimportanceofexercise. ●WritingCompetitionThetopicofthewritingcompetitionisExerciseandMe.Thelengthofthewritingis500wordsforthiscompetition. ●TalkThetalkwillbegivenon18December.ThespeakerwillbeDrChiufromStStephen'sHospital.Hewillthenanswerourmembers'questionaboutexercise. ●Exhibition展览Theexhibitionwillbeheldfrom19Decemberto3Januaryinourschoolhall.Thehistoryofdifferentkindsofexerciseandthewinningandexcellentwritingsfromthecompetitionwillbeonshow. ●After﹣schoolExerciseClassesTheafter﹣schoolexerciseclasseswillrunfrom18Decemberto14January.Intheseclassesexperiencedcoachesfromthelocalexerciseclubswillalsohelpourschoolmemberstomakepracticalexerciseplans. 1Whatisthepassagemainlyabout? A.Theaimoftheschoolactivities. B.Thedifferentkindsofschoolclasses. C.TheintroductionaboutExerciseMonth. D.Theschoolmembers'YouthSportsClub. 2Whatisthetopicofthewritingcompetition? A.ExerciseandMe. B.ASchoolActivity. C.PracticalExercisePlans. D.After﹣schoolClasses. 3Whenwilltheafter﹣schoolexerciseclassesstart? A.On15December. B.On18December. C.On14January. D.On15January. 4Whatcanwelearnfromthepassage? A.Thelocalexerciseclubhasalonghistory. B.DrChiuwilltrainthemembersafterschool. C.Thecoachingwillanswerthemembers'questions. D.Somewritingsfromthecompetitionwillbeonshow.

圆锥只有一个底面是一个圆锥的侧面是一个从圆锥顶点到的距离是圆锥的高．

mayhaveachancetobesuccessfulifhetrieshisbest.A. Somebody B. EverybodyC. Nobody D. None

Acolleagueofminelivesinthesamestreetasme.HedrivestoworkeverydaywhileIcyclethesamedistancealmosteveryday.ImaginemysurprisewhenIcycledtoworkonedaywentforashowerinthesportscentreandsawmyneighbourinthegymonthecyclingmachineafterdrivingtowork!Idon'tseethelogic.Itwouldbemucheasiertocycletoworksothatyouhavesomeexerciseeverydayaspartofyourdailyroutine. IwantedtopersuadethemtocycletoworksoIdidsomeresearchonafewwebsitesaboutthebenefitsofcyclingtowork.Cyclinghassomeobviousadvantagesoverdriving.Itischeaperitisbetterfortheenvironmentandyoudon'thavetofindaparkingspace.Thepointabouttheparkingspaceisanimportantoneascarparksareoftenfull.Iknowthatmycolleaguesometimesmakesa15﹣minutecarjourneytoworkandthenspends30minuteslookingforaparkingspace!Itistruethatcyclingisalittleslowerthangoingbycarbutatrushhoursitdoesn'tmakemuchdifference.Thetimeittakestocycleisgenerallyeasiertopredictthanthetimeittakestodrive.Thereasonforthisisthatwhenthereisheavytrafficpeopleonbicyclescangetpastwhilepeopleincarshavetowait. Thereareclearhealthbenefitstocyclingevenifyouonlycycleashortdistanceeachday.Accordingtooneexpertifyoucycleregularlyyoushouldbeasfitasaperson10yearsyounger.WellIam47andIstillplayfootballinateamsoIwouldsaythatthisclaimistrue.AswellasbeinggoodforyourhealthIthinkcyclingcanreducestress.IcertainlyfindthatIfeelbetterwhenIarriveatworkthanIdowhenIleavehome;andIfeelbetterwhenIgethomethanIdowhenIleavework.IalsofindthatwhenIcan'tsolveaproblematworktheansweroftencomestomewhenIamcycling.Cyclingrelaxesthemind.Iamgoingtosaytomycolleaguestwowheelsgoodfourwheelsbadeverydayuntiltheygetontheirbikes! 1Theauthorgivestheexampleofhisneighbourtoshow. A.thatit'snotlogicaltodrivetowork B.howsurprisedhewasaboutdrivingtowork C.thatcyclingisgoodforone'shealth D.thatcyclingisagooddailyexercise 2Comparedwithdrivingcyclinghasthefollowingadvantagesexceptthat. A.itischeaper B.it'sbetterfortheenvironment C.itdoesn'tneedaparkingspace D.itstimeiseasiertopredict 3Theauthorfeelsbetteraftercyclingbecauseitcan. A.makeapersonfit B.makeaperson'sstressreduced C.makeapersonyounger D.makeapersonfriendly 4Whatdoestwowheelsgoodfourwheelsbadmeaninthelastparagraph? A.Acarwithtwowheelsisbetterthanacarwithfourwheels. B.Abicyclewithtwowheelsisbetterthanabicyclewithfourwheels. C.Abicycleismuchcheaperthanacar. D.Cyclingisbetterforyourhealththanacar.

—HurryupJohn!—?—Isaidhurryup! A.Pardon B.OK C.Thanks D.Allright

如图DE∥BCBE平分∠ABC若∠1＝70°则∠CBE的度数为

1分OnthefirstdayofChineseNewYearwenewclothesandvisitpeople. A.pickup B.puton C.takeoff D.throwaway

氢气球下吊一小重物G在空气中做匀速直线运动若不计空气阻力和风力影响而小重物G恰能沿MN方向斜上升下图中气球和重物G在运动中所处的位置正确的是A． B． C． D．

Ofcourseshewasn'treallymyauntandoutoffearInevercalledherthattoherface.IonlyreferredtoherasMyAuntFanniebecausethenamealwaysmademyfatherlaughquietlyandgavemymothercausetolookstrictlyatbothofus﹣﹣﹣atmeforbeingdisrespectful失礼的ofmyelderandatmyfatherforencouragingmybadbehavior.IenjoyedbothreactionssoIlookedforeveryopportunitytoworkthenameintoasmanyconversationsaspossible. AsayoungwomanmymotherhadworkedinthekitchenofalargeVictorianfarmhouse.DuringthoseyearsmymotherhelpedAuntFannymakethebestblueberryjam蓝莓酱evertastedbyanyoneinGlenfield.Shewaswell﹣knownforherjamandforneversharingtherecipewithothers.EventhoughmymotherknewtherecipebyheartaslongasAuntFanniewasaliveshenevermadethejamwithoutAuntFannieinourkitchentodirecttheprocessandpreservethesecret. EachAugustmymotherwouldpreparemeforAuntFannie'svisit.OneyearafterIhadhelpedwiththejamprocessAuntFanniegavemeacoinandthenmademepromisethatIwouldneverspendit.Holdontothiscoinshesaidandsomedayyouwillberich.Istillhavemyveryfirstcoingiventomebymygrandmother.SoIkeptthecoininasmallboxandwaitedtobecomerich. InowhavetheblueberryjamrecipeandthecoinfromAuntFannie.Inpeople'seyesAuntFannie'ssuccessresultedfromthatsecretrecipe.Buttomeitwasjustacommonrecipe.NeitherhavetheysignificantlymademebecomearichpersonbutIkeepthemasreminderstoholdontothevaluablethingsinlife.Moneycanmakeyoufeelrichforawhilebutitistherelationshipsandthememoriesoftimespentwithfriendsandfamilythattrulyleaveyouwealthy.Andthatisafortunethatanyonecanbuild. 1WhydidtheauthoralwaysusethenameMyAuntFannieinconversations? A.ShewasfrightenedofAuntFannie. B.ShelikedAuntFannie'srecipe. C.Sheenjoyedherparents'reactions. D.ShegreatlyrespectedAuntFannie. 2Inthelastparagraphtheauthorencouragesreadersto. A.holdontothefirstcoininlife B.makeasmanyfriendsaspossible C.makemoneywiththeirownhands D.spendmoretimewithfamilyandfriends 3Whatcouldbethebesttitleforthispassage? A.TheKeytoSuccess B.BlueberryJamRecipe C.AFortuneBuiltfromaCoin D.ARelationshipofTrust

1分winIthegamebelievethey'll.

已知二次函数y=-2x2+4x+1且2≤x＜4求y的取值范围．

实验室用的蒸馏水可以通过蒸馏自来水来制取．操作方法是在右图所示蒸馏烧瓶中加入约1/3体积的自来水再加入几粒沸石或碎瓷片．在确定各连接部位严密不漏气后加热蒸馏烧瓶注意不要使液体沸腾得太剧烈．弃去开始馏出的部分液体收集到10mL左右蒸馏水后停止加热．请回答下列问题1写出仪器AB的名称AB．2实验时冷凝管进出水的方向应该是b进a出不能a进b出的理由是．3细心观察发现该装置明显少了一种支撑冷凝管的仪器该仪器是．4实验中加入的沸石或碎瓷片催化剂填是或不是其作用是．

—WhatcolorcanIchoosemom?—It'stoyoubaby!

在平面直角坐标系中已知点A2-a2a+3在第四象限1若点A到x轴的距离与到y轴的距离相等求a的值2若点A到x轴的距离小于到y轴的距离求a的取值范围

ZhangPengisaChinesedriverinXi'an西安.WhenhecheckedtheonlinewalletofhisWechatapp微信应用软件hesawthatoneofhispassenershadpaid6500yuanforA1pay.Thatmeantthepassengerpaidabout＄950butinfactthepassengeronlyneededtopay＄9.50.ZhangPengguessedthatthepaymentwasa2.Accordingtothetimeofthepaymentheguessedthatthefourforeigntravelersdidit.He3thefourtravelersfromthetrainstationanddroppedthemoffatanearby4.Whenhe5tocallthefourforeignpassengersZhangPengdirectlywenttothehotelagainwherehehaddroppedthemoff.Theninthehotelhe6whathadhappenedtothewaiteratthefrontdesk.Justatthattimethetraveler7madethepaymentcamedownstairs.Shewas8tohearabouthermistake.ItwasherfirsttimetovisittheChinesecityandshesaidthatitwasalsoherfirsttime9theapp'sonlinepaymentfunction在线付费功能topayfortheride.Shewas10moresurprisedwhenZhangPengrefusedtogetareward报酬and11herallherextra额外的money.12istruethatthetravelerhadawonderful13ofusingWechat.'Ican'tbelieveit'thewomantravelersaid.'14somepeoplemoneyistheironlydreamand＄950isalotofmoney.Ifeltveryexcitedyesterday15thetaxidrivercamebacktoreturnthemoneyinperson.Iamreallygrateful.'1A.65yuan B.65-yuan C.65-yuans D.the65thyuan2A.mistake B.question C.fool D.praise3A.cheeredup B.putup C.pickedup D.lookedup4A.station B.hotel C.hospital D.restaurant5A.succeeded B.forgot C.regretted D.failed6A.explained B.asked C.understood D.suggested7A.whom B.who C.whose D.which8A.interested B.glad C.angry D.surprised9A.use B.using C.used D.touse10A.very B.even C.quite D.too11A.got B.returned C.cost D.spent12A.It B.That C.He D.This13A.trip B.examination C.experience D.vacation14A.As B.From C.At D.For15A.because B.becauseof C.evenif D.if

[-x4]3=．

如图在平面直角坐标系中以O为圆心适当长为半径画弧交x轴于点M交y轴于点N再分别以点MN为圆心大于MN的长为半径画弧两弧在第二象限内交于点Pab则a与b的数量关系为

2017年9月12日天舟一号飞船与天宫二号空间实验室成功进行了对接如图是即将对接时的情境天宫二号绕地球飞行一圈约90分钟．下列说法中正确的是

计算a33÷a23

在沙漠或海面上常能看到海市蜃楼现象．下列关于海市蜃楼现象解释正确的是

在研究牛顿第一定律的实验中同学们已经知道滑块在水平面上滑行的距离与它刚滑到水平面上时的速度v0有关与水平面的粗糙程度有关有些同学还认为与滑块的质量有关．下面是甲乙丙三位同学在探究滑块在水平面上滑行的距离与滑块质量是否有关课题时所设计的实验步骤请你也参与进来．他们选择的器材有质量相同粗糙程度不同的木块铁块铜块铝块各一个斜面木板钩码若干． 1实验中应控制不变． 2甲乙丙三位同学设计的实验步骤分别如下你认为符合本课题探究要求的是同学的填选项前的编号． 甲让木块从斜面的顶端由静止滑下后沿水平木板滑行观察并记录木块在水平木板上滑行的距离和木块的质量分别在木块上放上数量不等的钩码先后让其从同一斜面的顶端由静止滑下后沿同一水平木板滑行观察并记录每次木块在水平木板上滑行的距离和木块及其上钩码的质量． 乙先后让木块从同一斜面的不同高度处由静止滑下后沿同一水平木板滑行观察并记录每次木块在水平木板上滑行的距离和木块的质量． 丙先后让木块铁块铜块铝块从同一斜面的顶端由静止滑下后沿水平木板滑行观察并记录它们分别在同一水平木板上滑行的距离和它们的质量． 3下表是按符合本探究课题要求的实验步骤操作后得到的实验数据从中得出的结论是． 4如右图所示让小球从A点静止释放运动到C点时若一切外力消失则小球会沿哪条路线继续运动并写出你判断的依据．．

Where'smyruler?It'sinyourpcase.

从化学的角度认识我们身边的物质往往有不同的发现．回答下列与空气相关的问题．已知液氮沸点-196℃液氧沸点-183℃．将燃着的木条至于盛满液态空气的烧杯口观察到的现象是

相反数等于它本身的数是．

电扇使用一段时间后扇叶很容易粘上灰尘这是因为扇叶转动过程中带上了具有的性质所以灰尘被吸在扇叶上．

如图1抛物线的顶点A的坐标为14抛物线与x轴相交于BC两点与y轴交于点E031求抛物线的表达式2已知点F0-3在抛物线的对称轴上是否存在一点G使得BG+FG最小如果存在求出点G的坐标如果不存在请说明理由．3如图2连接AB若点P是线段OE上的一动点过点P作线段AB的垂线分别与线段AB抛物线相交于点MN点MN都在抛物线对称轴的右侧求MN最大值

计算-a3b62--a2b43

如果A1-ab+1在第三象限那么点Bab在

研究和学习化学有许多方法下列方法中所举示例正确的是

—What'sthatin?—It'sabaseball.

如图抛物线y=-x²+bx+c经过A06B42两点．1求抛物线的解析式2将抛物线向下平移m个单位使平移后得到的抛物线顶点落在△OAB的内部不包括△OAB的边界求m的取值范围．3若P是抛物线上一动点是否存在点P使△PAB的面积是10若存在直接写出P点坐标若不存在请说明理由．

若二元一次方程组的解为则a﹣b＝．

nameisTony.isten.he

在平面直角坐标系中一个点的横纵坐标都是整数并且它们的乘积是4满足这条件的点共有个

已知点M32与点Nxy在同一条平行于y轴的直线上且点N到x轴的距离为8则点N的坐标为

Soyoujustfinishedwhatyouthoughtwasagreatprojectatworkandnowyourbossislistingallthethingsyouneedtoimproveupon.1.Afterallpositivecriticism批评isakeypartofanyjob.Throughthisarticlelearnhowtoacceptcriticismanddoyourjobswell. 1.Acceptthatyouarenotperfect. Ifyoubegineachtaskthinkingthatnothingwillgowrongyou'refoolingyourself.2.Theimportantthingistolearnfromthem. 2.3. Afteryou'vefinishedandbeforeyousubmitittoyourbossbesureyou'vegoneovereverythingcarefully.Thiscanhelpyoutoavoidsillymistakesandensurethatyourbosswon'thavetobotheryouaboutminorproblems. 3.Listencarefully. 4.Takenotesandremindyourselfhowtofixtheproblem.Thisstepisthemostdifficultasitcanmeanthatonemustputone'sprideawayandadmitone'sresponsibilityinone'swork﹣relatederrors. 4.Agreewithpartofthecriticism. Whenfacedwithcriticismmostpeoplefocusonthepartofthenegativefeedbackthatmaynotbetrueandignoretherest.Thisdoesn'tsolveanyproblemsandyoudon'tlearnanything.Whenyouagreewithonepartofthecriticismyoubecomeopentolearning.5.Evenagreeingwithonesmallaspectofthecriticismwillcreateanatmosphereofteamwork.Thefocusthencanbecomehowyou'llworktogethertosolveaproblemwhichwilllessenyourfeelingofbeingattacked. A.Don'ttakeitseriously. B.Don'tgetdiscouraged. C.Youwillmakemistakes. D.Doublecheckyourwork. E.Youdon'thavetoagreewitheverything. F.Infactyouneedtimeandcouragetoprocesstheinformation. G.Neverignorecriticalcommentsoryouwillrepeatthesamemistakes.

科学研究中常常用到控制变量法转换法理想化模型类比法等科学方法．在下列研究实例中运用了转换法的是

如图抛物线y=﹣x2+bx+c与x轴交于A10B﹣30两点．1求该抛物线的解析式2在1中的抛物线上的第二象限内是否存在一点P使△PBC的面积最大若存在求出点P的坐标及△PBC的面积最大值若不存在请说明理由．

1分﹣﹣﹣Mikeplaysthedrumssowonderfully! ﹣﹣﹣Ofcourse.Heisthananyotherstudentsinhisclass. A.talented B.moretalented  C.lesstalented D.themosttalented

圆柱有条高并且每条高都相等圆锥有条高．

Theoldmanfortenyears.Hischildrenmisshimalot. A.hasdied B.hasbeendead C.died D.wasdead

如图在平面直角坐标系中经过点A的双曲线y＝x＞0同时经过点B且点A在点B的左侧点A的横坐标为∠AOB＝∠OBA＝45°则k的值为．

如图所示要使两灯泡串联应闭合开关．若S1S闭合S2断开则灯泡有电流通过．选填L1L2或L1和L2

如图在平面直角坐标系中菱形ABCD的顶点C与原点O重合点B在y轴的正半轴上点A在反比例函数y＝x＞0k＞0的图象上点D的坐标为43． 1求反比例函数的关系式 2若将菱形ABCD沿x轴正方向平移当菱形的顶点D落在函数y＝x＞0k＞0的图象上时求菱形ABCD沿x轴正方向平移的距离． 3在x轴上是否存在一点P使|PA﹣PB|有最大值若存在请求出点P坐标若不存在请说明理由．

1分﹣﹣﹣Lookatthetallboyoverthere.He'swinneroftheschoolpaintingcompetition. ﹣﹣﹣Ohhemustbecreativeboy. A.Thea B.thean C.athe D.ana

小天利用手中的条形磁体做了以下小实验其中结论正确的是

计算|1﹣3|﹣+﹣1+2sin30°

某种可口可乐罐的形状为圆柱形底面直径为8.5厘米高为10厘米．将18罐这种饮料按如图所示的方式放入箱内这个箱子的长宽高至少是多少

1分﹣﹣﹣Doyoulikerockmusicorlightmusic? ﹣﹣﹣.Ilikepopmusic. A.Both B.None C.Neither D.Either

某日小明步行小颖骑车他们同时从小颖家出发以各自的速度匀速到公园去小颖先到并停留了8分钟发现相机忘在了家里于是沿原路以同样的速度回家去取已知小明的步行速度为180米/分钟他们各自距离出发点的路程y与出发时间x之间的关系图象如图所示则当小明到达公园的时候小颖离家米．

小明用两个不同的白炽灯做探究串联电路的电流特点实验时发现一个灯泡较亮而另一个灯泡较暗则较亮的灯泡

1分dayaiswhatbeautifulit!

10分Nowstudents'Englishhandwriting书写getsworseandworse.Thatmakestheirteachersfeelworried.IsyourEnglishhandwritingbeautiful?1. Usepaperwithlines WhenyouwriteEnglishwordsorsentencesyoucanusepaperwithlines.Thatwillmakeyourhandwritingstraight.2Besuretofillthelinedspacecompletely.Andmakesurethesecapitalletters大写字母arewrittenproperly. Slowdown Ifyourwritingishardtoreadjustslowdownalittle.3Ifyouwritetooquicklyit'shardforyoutostopwhereyoushouldandyoumaymakemoremistakeseasily. 4. Whenyouholdyourpencilinthecorrectwaywritingismuchbetter.Somekidspressdownreallyhardwhentheywrite.Thatmakesthehandwritingbad.Trytoberelaxedanddon'tholdthepencilsohard.Letyourwritingappearniceandclean.Ifyoudosopeoplewillguessyouareastudentwithagoodhabit. Drawmorepictures 5Whileyouaredrawingpicturesyouneedtousetheskillstocontrol控制yourpencilbetter.Eventhoughyouhavenochancetodrawatschoolyoucanpracticebydrawingathome. Handwritingisveryimportant.Imagineyouareafamousmoviestarorawell﹣knownsportsplayerwhatdoyoudowhenyourfansrunuptoyou?Givethemyourautographs亲笔签名ofcourse!

以下给出的几何体中主视图是矩形俯视图是圆的是

计算x+6y2

小明利用灯泡L1L2三个开关SS1S2一个电池组及导线若干组装电路按要求设计的电路图如图甲所示．1电路图中灯泡L1L2是的．选填串联或并联2根据已知电路图中电流的方向黑色箭头判断电源上端是填正或负极．3连接的实物电路如图乙所示请用笔画线代替导线将实物图中未连接好的导线补充完整．连线不许交叉4三个开关都闭合后只有灯泡L2发光则电路故障可能是L1为进一步确定故障原因小明将L1L2互换位置再次将开关都闭合后发现只有L1发光则可以确定故障是A．灯泡L1断路 B．灯泡L1短路 C．开关S1断路 D．开关S2断路

电能是一种方便的能源它的广泛应用形成了人类近代史上第二次技术革命．有力地推动了人类社会的发展给人类创造了巨大的财富．但如果在生产和生活中不注意安全用电会带来灾害．关于安全用电下列说法正确的是

代数式与代数式3﹣2x的和为4则x＝．

图a是一个长为2m宽为2n的长方形沿图中虚线用剪刀均分成四块小长方形然后按图b的形状拼成一个正方形．1你认为图b中的阴影部分的正方形的边长等于2请用两种不同的方法求图b中阴影部分的面积．方法1方法23观察图b你能写出下列三个代数式之间的等量关系吗代数式m+n2m-n2mn4根据3题中的等量关系解决如下问题若a+b=7ab=5则a-b2的值

1分﹣﹣﹣Howdoyoucelebrate? ﹣﹣﹣Weusuallyeatzongziandwatchboatraces. A.theSpringFestival  B.theMid﹣AutumnFestival  C.theLanternFestival  D.theDragonBoatFestival

Theairinthecountrysideissomanyofthepeopleliketogothereonweekends.

如图平行四边形ABCD中A在坐标原点D在第一象限角平分线上又知AB=6AD=2求BCD的坐标．

为提高学生的阅读兴趣某学校建立了共享书架并购买了一批书籍．其中购买A种图书花费了3000元购买B种图书花费了1600元A种图书的单价是B种图书的1.5倍购买A种图书的数量比B种图书多20本． 1求A和B两种图书的单价 2书店在世界读书日进行打折促销活动所有图书都按8折销售学校当天购买了A种图书20本和B种图书25本共花费多少元

电动牙刷越来越受到消费者的青睐．电动牙刷工作时能深入牙齿清洁牙缝刷毛的颤动能促进口腔的血液循环对牙龈组织有按摩效果．下表为某电动牙刷参数． 1充电时只需将牙刷放在通电的底座即可感应充电牙刷和底座之间既没有用线连接也没有金属接点安全又方便．其充电原理是． 2当牙刷正常工作时求电流大小保留小数点后两位 3根据表中信息将已经耗完电能的电池充满理论上需要多少时间 4无论用哪种牙刷刷牙都需要掌握正确的刷牙方法关于刷牙下列说法正确的有 A．每次刷牙时间约3分钟左右B．来回拉动牙刷幅度不超过一个牙位 C．刷牙时动作要用力D．3个月更换一次牙刷

1分﹣﹣﹣Doyouloveyourparents? ﹣﹣﹣Yesofcourse.inmylifeismoreimportantthanthem. A.Something B.Anything C.Everything D.Nothing