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Tomissothatherunstothekitchentodrinkwater.
某大学的校门是一抛物线形水泥建筑物大门的地面宽度为8米两侧距地面4米高度各有一个挂校名横匾用的铁环两铁环的水平距离为6米．求校门的高精确到0．1米水泥建筑物厚度忽略不计．
April22peoplearoundtheworldcelebrateEarthDayindifferentways.A.In B.At C.On D.to
Thedog'sdiemadehimcryforalongtime.
已知Rt△ABC中∠C=90°tanA=BC=12求ACAB和cosB．
1如图1在正方形网格中每个小正方形的边长均为1个单位将△ABC向绕点C逆时针旋转90°得到△A'B'C'请你画了△A'B'C'不要求写画法．2如图2已知点O和△ABC试画出与△ABC关于点O成中心对称图形．
已知α为锐角则sinα+cosα的值
—WhatdoyouthinkofthemovieZootopia?—Hmm...IthinkitismoviethatIhaveeverseentheseyears.A. agood B.abetter C.thebest D.aworse
A:Jeff26 B:YesMum.Ifinishedmyhomeworkafewminutesago. A:Butwhatareyoudoingnow? B:27Ijustwanttorelaxmyself. A:Isthatalsoyourhomework? B:Notreally.ButthevideoiswellworthwatchingIsuppose. A:Youdo?28 B:It’sabouttheBeltandRoad“一带一路”.29 A:YesI'vejustheardsomethingaboutthatontheradio.Anywayitmaybealittlebithardforyoutounderstand. B:Alittlebithard?Youmustbejoking.Inthevideotheconversationbetweenthefatherandthedaughterexplainsthetopiclivelyandclearly. A:Itdoes?CanIwatchitwithyou? B:30Ipromiseyou’llfinditamazingandinteresting. 运用如下所给的句子选项补全对话 26. 27. 28. 29. 30.
—There'sinthecity.Whynothaveapicnicinthecountryside?—Great.JingyuetanParkmightbeagoodchoice.A.something interesting B.nothinginterestingC.anythinginteresting D.everythinginteresting
抛物线y=2x2+3的顶点坐标为关于x轴对称的抛物线解析式为其顶点坐标为因此把抛物线y=ax2关于x轴对称的抛物线解析式为把抛物线y=ax2+k关于x轴对称的抛物线解析式为
Myelderbrother mywetsportsshoesandmademesitbythefire.A.tookoff B.kickedoff C.carriedout D.putout
—Isthereanybodywhocanlendmeahand?—I'mafraidnot.Youknowyouaresupposedtodependon.A.myself B.yourself C.themselves D.yourselves
Someonehisfingerandheputsomemedicineonit.A.cut B.cuts C.tocut D.cutting
Don'twhatyoucandotodaytilltomorrow.A.puton B.putdownC.putup D.putoff
—Philipsyoumakesomuchnoisewhenyourlittlesisterissleeping?—SorryMum.I'llstoprightaway.A.can B.may C.must D.Should
如图已知AO=10P是射线ON上一动点即P点可在射线ON上运动∠AON=60°．1OP=时△AOP为直角三角形．2设OP=x则x满足时△AOP为钝角三角形．
sin38°=0.7880则cos52°=
sin21°+sin22°+sin23°+...+sin289°=
在同一直角坐标系中一次函数y=ax+c和二次函数y=ax2+c的图象大致为
—Doyouknowthepersonoverthere?—Yes.Heisafamous.climb
已知抛物线y=ax2+k求满足下列条件时的函数解析式．1过点0-320．2过点11-27．
—HelloJohn.ThisisMike.Whatareyoudoingnow?—I'mwatchingafootballmatch.Itstartedat7:30p.m.andonforanotherhour.A.hasbeen B.was C.willbe D.is
如图Rt△ABC中∠A=90°AB=4AC=6DE分别是ABAC边上的动点且CE=3BD则△BDE面积的最大值为
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