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如图∠APB=30°圆心在PB上的⊙O的半径为1cmOP=3cm若⊙O沿BP方向平移当⊙O与直线PA相切时圆心O平移的距离为cm.
Weallknowthatwe'llmeetallkindsofdifficultiesinourlivesinthefuture.Weshouldlearntobeenoughtotakeonanychallenge. A.confident B.modest C.generous D.curious
LifeispeacefuleverydayNothing出平意料的haseverhappenedhere.
如图1将菱形纸片ABECDF沿对角线BDEF剪开得到△ABD和△ECF固定△ABD并把△ABD与△ECF叠放在一起. 1如图2将△ECF的顶点F固定在△ABD的BD边上的中点处△ECF绕点F在BD边上方左右旋转设旋转时FC交BA于点HH点不与B点重合FE交DA于点GG点不与D点重合. BH•GD=BF2 2如图3△ECF的顶点F在△ABD的BD边上滑动F点不与BD点重合且CF始终经过点A过点A作AG∥CE交FE于点G连接DG. FD+DG=.请予证明.
﹣﹣﹣I'lldrivetotheoffice ﹣﹣﹣Wellcouldyougivemeaplease? A.walk B.way C.lift D.direction
如图直线AB交双曲线于AB交x轴于点CB为线段AC的中点过点B作BM⊥x轴于M连结OA.若OM=2MCS△OAC=12.则k的值为.
如图一次函数y1=﹣x+2的图象与反比例函数y2=的图象相交于AB两点与x轴相交于点C.已知tan∠BOC=点B的坐标为mn. 1求反比例函数的解析式 2请直接写出当x<m时y2的取值范围.
Thebankerhadalotofw财富buthewasalwaysworriedaboutlosinghismoney.
若a+b=4a﹣b=1则a+12﹣b﹣12的值为.
﹣Icandriveyouhome? ﹣butareyousureit'snottoomuchtrouble? A.Don'tmentionit. B.Thatwouldbegreat C.I'mafraidnot D.Withpleasure
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如图AB是⊙O的直径C是⊙O上的一点过点A作AD⊥CD于点D交⊙O于点E且=. 1CD是⊙O的切线 2若tan∠CAB=BC=3求DE的长.
如图在四边形ABCD中E是AB的中点AD∥EC∠AED=∠B. 1△AED≌△EBC. 2当AB=6时求CD的长.
一Manyyoungpeopleplaywithmobilephonesalldayinsteadofreadingbooks. 一That'stoobad.Everyonebeabooklover.Readingismoreenjoyable. A.would B.may C.should D.need
IfoneofyourfriendssendsyouamessagetoborrowmoneyontheInternetyou'dbetterphonehimfirsttomakesureofthat. A.recently B.directly C.finally D.strongly
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