2022英语周报高三课标第11期答案

24.C,根据第二段“ Charlotte Hornets chose him with the 13 th pick of the196dat. He was traded to the Lakers sssafter and became the second youngest nBa player in history when the 1996-97 season opened."可知,A项应该为theUnited States;B项 amateur应该为 professional;D项文中没有提及。25.A。根据第三段第一句中“ was forced to”,及第二句中“ an uneasy relationship”可知。26.B。根据第三段中“ Bryant, a shooting guard, and O Neal, a center, meshed into a remarkably effective combination”得知后卫科比和中锋奥尼尔匹配成为最佳组合27.A。通读最后一段可知,本段讲述了科比的成就及死亡。

22.解:(1)设BD:x=my 1(m≠0),B(x1,y1),D(x2y联立消x得y2-4my-4=4∴△=16m2 16恒正,y y2=4m,yy十AB: yy1 yi-yi即4x-(y1-y2)y-yy2=0令y=0,得x=y,y2=-1,∴定点Q(-1,0)(4分)(2)由题MB·MD=(x1-3,y 1)·(x2-3,y 1)=(1-3m)(y y2) y2y (1y2) 4=0,16∴12m2-4m-1=0解得m=1或L(舍去)∴直线BD的方程为2x-y-2=0(6分由题意知,△BDQ的内心必在x轴上,设内心I(t,0),(-1<1<1),则Ao==2三这=y(y1 y2)2∴BQ:2x-√5y 2=0由到直线HQ与到直线BD的距离相等得2(=21-12 2解得=2-35或1=2 345(舍去),所以内心为I∴△BDQ内切圆半径为2x2=3(9分)由对称性,△ABD的外心应在x轴上,设外心P(a,0),则BD中垂线方程为2x 4y-7=0,解得P(2)联立{yy2=4x,解得B(3 6,5 1),∴△BAD的外接圆半径为R=√2-3) (√5 1)2=35则6√5-10(12分)

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