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教案备课库《9（1）年级数学作业二次函数作业》真题及答案
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Giveupitisbadforyourhealth. A.smoke B.tosmoke C.smoking D.smoked
如图所示电阻R1=3ΩR2=6Ω线圈的直流电阻不计电源电动势E=5V内阻r=1Ω．开始时电键S闭合则
Hevolunteersworkonthefarm.
计算-3=．
若最简二次根式与3是同类二次根式则x的值是
在制作精密电阻时为了消除使用过程中由于电流变化而引起的自感现象采用双线并绕的方法如图所示．其原理是
Hevolunteerstodothethingslikecleanupthecityparks.
在下图所示的四个日光灯的接线图中S1为启动器S2为开关L为镇流器能使日光灯正常发光的是
It'stoohotintheroomyou'dbetterthewindows.
下列二次根式中与是同类二次根式的是
计算10-6+4÷
Canyouwhatitwouldbeliketoliveunderthesea?
—Ihavegreatinfinishingtheworkbymyself.Couldyouhelpme?
Theradiodoesn'twork.Itis.
关于线圈中的自感电动势的大小下列说法正确的是
Thechildrenwereall becauseofthegames.excite
如图所示电源的电动势为E内阻r忽略不计．AB是两个相同的小灯泡L是一个自感系数相当大的线圈．以下说法正确的是
I'dlikeyouforapicnicwithus. A.go B.togo C.going D.went
如图所示是测定自感系数很大的线圈L的直流电阻的电路L两端并联一只电压表用来测定自感线圈的直流电压在测定完毕后将电路拆卸时应
化简+3=．
Thesevolunteersaremakingplanstohelpthosehomepeople.
—Theoldman allhismoneytoacharity慈善机构.—Heisreallygreat.A.tookaway B.putaway C.wentaway D.gaveaway
—Yourdaughterisbadlyillnow.—YesSheshouldn'tputofftoseethedoctor. A.go B.went C.going D.togo
计算÷-×+
Susanwasalovelyandbeautifulgirl.Sheworkedasa1.Shewasoncethemost beautifulgirlinherhospital.Manyyoungmenlikedherandwantedtomarryher.People could2seehersweetsmiles.Herparentswereproudofher.Shewasveryhappywith herappearance容貌.Butonedayeverythingchanged.She3acaraccidentandherfacewasdisfigured 毁容.Afterthatshefeltquite4andstayedathomeallday.Shedidn'twantto 5anyone.Shedidn'ttalktoothers.Shefeltlonely. Herparentswereafraidshewouldgomad.SoonedaytheytookhertoBlindChildren's Home.She6withtheblindchildrenthatafternoonandforthe7timeafterthe accidentherparents8herhappylook.Justastheywere9ablindgirlputher 10roundSusan'sneckandsaidYourvoice11sweetandIknowyoumust haveabeautifulface.Susancriedallthewayhomeinthecarbutitwaswith12.Susanchangedinthe end.13camebacktoherfaceagain.Lifeisnotalways14.Soweshouldlearntochangeourmind.Trytostayhopeful. It15usliveahealthylife.Ifwefollowtheideawewillhaveahappylife. 1.A.teacher B.farmer C.nurse D.policewoman2.A.seldom B.never C.always D.once 3.A.had B.saw C.found D.heard 4.A.excited B.sad C.lucky D.tired 5.A.like B.advise C.care D.meet 6.A.played B.smiled C.cried D.ate 7.A.one B.first C.second D.last 8.A.saw B.believed C.knew D.won 9.A.running B.talking C.leaving D.coming10.A.head B.feet C.legs D.arms 11.A.hears B.sounds C.listens D.seems 12.A.happiness B.sadness C.loneliness D.madness 13.A.Health B.Hope C.Smiles D.Sadness 14.A.right B.useful C.wrong D.perfect 15.A.needs B.wants C.takes D.helps
You'llneverlearnrideabikeifyoudon'tpractice.
ThereissomethingwrongwiththeTV.Ishoulditupatonce.
ThoughIliveintheforestIdon'tfeel.A.alone;lonely B.alone;alone C.lonely;alone D.lonely;lonely
Theboxistooheavy.Ican'tit.—Don'tworry.Icanhelpyou. A.take B.bring C.carry D.get
计算a+-=．
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