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教案备课库《26.1二次函数的概念课后作业》真题及答案
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Thekitehermotherhadboughtwasbroken.
WegiveourteachersomefonTeachers’Day.
Iamlearninghowswim.
notbringfriendsfromotherclass.
在一个不透明的盒子里装有只有颜色不同的黑白两种球共40个小颖做摸球实验她将盒子里面的球搅匀后从中随机摸出一个球记下颜色再把它放回盒子中不断重复上述过程下表是实验中的一组统计数据1请估计当n很大时摸到白球的频率将会接近精确到0.12假如你摸一次你摸到白球的概率P白球=3试估算盒子里黑白两种颜色的球各有多少只
Thanksforimetoyourbirthdayparty.
Nevermakemistakesinfuture.Itwillbeabadinfluenceonyou.
Youcansaproblembylearningtoforget.
—Let'sgooutforapicnic野餐onSunday.—A.Nicetomeetyou. B.Goodidea. C.Thesametoyou. D.goodluck.
Ihavereadthebook.A.ahalfof B.half C.ahalf D.halves
Theyagreedtokeepthenewstothey.
Wewillgoforapicnicitrainsnextweek.A.if B.unless C.when D.because
Idon'tknow.A.ifhewillwearjeanstotheschoolparty B.ifhewearsjeanstotheschoolpartyC.whatwillhewearjeanstotheschoolparty D.whathewillwearjeanstotheschoolparty
某人进行打靶练习共射击10次其中有2次中10环有3次环中9环有4次中8环有1次未中靶试计算此人中靶的概率假设此人射击1次试问中靶的概率约为多大中10环的概率约为多大
—Doyoulikethiskindofdollies?Theylookverybeautiful!—NoIlikeclothesarefashionable.A.that B.who C.why D.what
Whynotyourteacherforhelpwhenyoucan’tfinishitbyyourself?A.ask;write B.toask;writing C.ask;writing D.toask;write
CanyougivemesomeaonhowtolearnEnglishwell?
TeachinginthepoorvillageisaneweforthevolunteersfromShanghai.
Sometimeslifeisfilledwithsad.Nomatterwhathappensweshouldfaceitbravely.
Ifpeopledon’tprotectthewildanimalstheydieout.
设有外形完全相同的两个箱子甲箱有99个白球1个黑球乙箱有1个白球99个黑球随机地抽取一箱再从取出的一箱中抽取一球结果取得白球问这个球最有可能是从哪个箱子中取出的为什么
Thedesklegisbrokenisveryold.
—WhydoyouwanttoanEnglishclub?—BecauseIwanttoimprovemyspokenEnglish.A.joinin B.takepartin C.join D.takepart
ThepersontoyoujusttalkedisMrWang.
Theteacheralwaysasksherhomeworkcarefully.A.do B.does C.doing D.todo
IlikeplayingbasketballfootballbecauseIwanttobeabasketballorafootballplayerinthefuture.A.eitheror B.neithernor C.notonlybutalso D.notbut
Becarewhenyoudoanythingyouaredoing.
下列粒子结构示意图中表示阴离子的是
I'msorryIhavenotimewatchTVnow.
Weoftenhaveaclassmonceaweek.
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