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已知直线l的方程为，则直线l的倾斜角为（ ）
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已知直线l过点P.34它的倾斜角是直线y=x+1的两倍则直线l的方程为
y﹣4=0
x﹣3=0
y﹣4=2（x﹣3）
y﹣4=x﹣3
若直线l的斜率为﹣1则直线l的倾斜角为.
已知直线l的方程为y＝﹣x+1则直线l的倾斜角为
已知点A.－1－5B.33直线l的倾斜角是直线AB的倾斜角的2倍求直线l的斜率.
已知直线l的倾斜角为135且经过点P11.Ⅰ求直线l的方程Ⅱ求点A.34关于直线l的对称点A.的
已知直线l过定点10且倾斜角为则直线l的一般式方程为.
已知直线y＝x－1的倾斜角为α另一直线l的倾斜角β＝2α且过点M.2－1求l的方程.
已知直线l的方程为y=x+1则该直线l的倾斜角为
30°
45°
60°
135°
①直线l的倾斜角是α则l的斜率为tanα②直线l的斜率为－1则其倾斜角为45°③与坐标轴平行的直线没
0个
1个
2个
3个
已知直线y＝－x＋5的倾斜角是直线l的倾斜角的大小的5倍分别求满足下列条件的直线l的方程.1过点P.
已知直线l的方程为y=x+1则该直线l的倾斜角为
30°
45°
60°
135°
若直线l的倾斜角是连接P3–5Q0–9两点的直线的倾斜角的2倍则直线l的斜率为.
已知直线l的方程为y＝x＋1则直线l的倾斜角为
30°
45°
60°
135°
已知直线l经过点0－2其倾斜角为60°.1求直线l的方程2求直线l与两坐标轴围成三角形的面积.
已知直线l的纵截距为-1倾斜角是直线l13x+4y-1=0的倾斜角的一半求直线l的方程.
已知直线l过点10且倾斜角为直线l0x－2y－2＝0的倾斜角的2倍则直线l的方程为
4x－3y－3＝0
3x－4y－3＝0
3x－4y－4＝0
4x－3y－4＝0
已知直线l经过点A.12且倾斜角是直线y=2x+3的倾斜角的2倍那么直线l的方程为.
已知直线l1的倾斜角α1＝40°直线l1与l2的交点为A.21把直线l2绕点A.按逆时针方向旋转到和
若直线l的倾斜角是连接P3–5Q0–9两点的直线的倾斜角的2倍则直线l的斜率为
已知直线l的倾斜角比直线y=3x+1的倾斜角的2倍还大45°且过点P﹣11直线m与l平行且它们的距
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USSpaceAgencyReturnstoMarswithInSightLander TheAmericanspaceagency'slanderInSightistoarriveonMarsattheendofNovember2018.UnlikeNASA'sCuriosityroverInSightwillnotmoveacrosstheplanet'ssurface.Insteaditwillbecomethefirstspacecraft航天器usedonlyforexploringunderground.ItwillstudythegeographyofMarssearchingforsignsofMartian火星的quakes. InSightisaprojectofU.S.andEurope.Itis6meterslongand1.5meterswide.Itweighs360kilograms.InSight's1.8﹣meterroboticarmwillputtwoexperimentsinplace.BotharedesignedtoexploreundergroundofMarstolearnabouttheinside. BruceBanerdtistheleadscientistforInSight.Heviewedthespacecraftasarobotthatcantakecareofitself.It'sgotitsownbrain.It'sgotanarm.Itcanlistenandfeelthings.Itpullsitsownpoweroutofthesunhenoted. ThomasZurbuchenoneoftheheadsinNASAsaidtheresultsoftheInSightprojectcouldchangethewaywethinkabouttheinsideofourearth.ButfirstInSightwillhavetolandonMarsundamaged.SinceMarsexplorationstartedinthe1960sonlyabout40percentoftheexplorationshavesucceeded. TomHoffmanisInSight'sprojectmanager.Hesaidearliersuccessesdonotlessentheconcernsforeachnewexploration.Thatwevedoneitbeforedoesn'tmeanwe'renotnervousandexcitedaboutdoingitagainhesaid. InSightwillentertheMartianatmosphere大气层travelingat19800kilometersanhour.ItwillslowforlandingonawideflatareaonMars.IfallgoeswellInSightcouldcarryoutitsexperimentsinabout10weeks.TheInSightprojectisexpectedtocontinueforoneMartianyearabouttwoyearsonEarth. 1WhatisthedifferencebetweenInSightandNASA'sCuriosityrover? A.Thesize. B.Thedesign. C.Thespeed. D.Thetask. 2Whatcanwelearnfromthepassage? A.InSighttravelsatanunchangedspeed. B.InSightistheprojectofAmericaandJapan. C.InSighthasthefunctions功能ofarobot. D.InSightismainlypoweredbythenaturalgas. 3Whatwillbeoneofthecontributions贡献oftheInSightprojectaccordingtoZurbuchen? A.ItwillhelpusunderstandthegeographyofMars. B.Itwillchangethewaywethinkabouttheinsideoftheearth. C.ItwillhelpcarryoutmoreexperimentsonMars. D.ItwillgetmoreinformationaboutthereasonsforMarsquakes. 4WhatisHoffman'sattitudetowardsthisexplorationoftheInSight? A.Confident. B.Satisfied. C.Concerned. D.Frightened.
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FiveyearsagoItookasightseeingtriptoWashingtonDC.Isawmany1nationtreasuresandIalsosawmanypoor2likebeggarsandhomelessfolks.StandingoutsidethemuseumIhearda3behindmeCanyouhelpme?WhenI4aroundIsawanelderlyblindwomanwithherhandsextended伸着.I5intomypockettookoutthe6andplacedtheminherhandwithoutevenlooking7her.IhatedbeingtroubledbyabeggarwhenIwas8seeingpeopleandthingsaround.Buttomy9theblindwomansmiledandsaidIdon'tneedyourmoney.Ijustneedyour10tofindthepostoffice.IsoonrealizedIhad11anotherpersonforwhatIthoughtshehadtobe. Thisexperiencemademefeelbadaboutmyself.12inmyownlifeIhavealso13manyactsofprejudice偏见.WhenIworkedasabusboyattheageof17Iheardafathertellhissonthathewould14likemeifhedidn'tworkharder.Ishouldhave15thetreatmentandknownwhatitislike.Butnowlivingagoodlifeasanetworkengineerit'stooeasytoforgetmy16toforgetwhoIamandwhereIhavebeenandtoignore17Iwanttogo.Theblindwomancuredmeofmy18.ShemademerealizethatIshouldalwaysstayhumble谦卑的andkeepmyeyesandheart19 BythewayIhelpedthatladytogettothepostoffice.I20hopetothankherforthepricelesslessonshegaveme. 1A.wonderful B.official C.colorful D.popular 2A.workers B.audience C.people D.students 3A.cry B.voice C.shout D.noise 4A.ran B.walked C.looked D.turned 5A.reached B.felt C.checked D.stepped 6A.papers B.pictures C.coins D.cards 7A.for B.at C.after D.through 8A.imagining B.finishing C.practicing D.enjoying 9A.surprise B.pleasure C.interest D.sorrow 10A.hand B.idea C.help D.suggestion 11A.trusted B.judged C.forgot D.met 12A.Inshort B.Inbrief C.Inorder D.Infact 13A.experienced B.watched C.found D.accepted 14A.givein B.falldown C.endup D.passaway 15A.kept B.remembered C.received D.refused 16A.pain B.joy C.future D.past 17A.where B.why C.when D.how 18A.foolishness B.kindness C.blindness D.illness 19A.calm B.open C.warm D.shut 20A.equally B.gradually C.frequently D.sincerely
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增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 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. 81.Therecordingcompanywasveryimpressedwiththeperformancethattheyofferedthebandadeal..
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