20192022英语周报高二课标答案

34.(1)AB解析:题图可知,浮标振动的周期T=2,图可知,波长x一4m,该波的波速v=÷=2m/s选项AB正确:由题图1可知,质点在=0.5s时处于平衡位置且滑轴本向运动,在0~4m范围内的质点在t=0.5s时刻有x=0、x=2m、x处的质点处在平位置,但只有x=2m处的质点是沿y轴负方向逐动的,故懸图是x=2m告质点的振动图像,此时期一m处的质点正向轴正向动,故再处可达放位2到D正确,CE错误(2)解析:(1)由于光线沿圆弧面的半径方向所联在面漫有偏拆,射到置线的物点射玻璃,如图所示,MQ是从玻璃射出的光线,作光线在直线面的M点的法线O京O,呼很不MOB∠OMO4=∠PMO3=30°(1分)数Pa的奥高好菌天声蒸出高∠MQD=∠QMO=45°(1分)周菌(8)MQ,,d数中陋丙干置0状直设玻璃的折射率为n,则sin∠PMO(1分)解得n=√2(1分)离的中距别主率号由一时b()在△MOQ中,∠QMO=15°,∠MQO=135°,QO=d,则(代,快围润,公∠MQO=sm∠OMO(2向游很银自AM路辟因基日业时结AOM0O解得OM=(3 1)d(1分)中二娘书端显(白歪强)白道设光在玻璃中传播速度为,往玻璃中经过的路程为2,通进玻璃时間;,则”千论Ar=R-OM代8)的面合氧=C(1分)r=R-OM=(1分)t=(1分)解得t2R(3 1)d(1分)

第四部分写作(共两节,满分35分)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:在错的词下画一横线,并在该词下面写出修改后的词注意:1.每处错误及其修改均仅限一词2.只允许修改10处,多者(从第11处起)不计分This sweet senior has been asking for a new pup since her last dogunexpected passed away last year. According togranddaughter, me, herfally came true earlier this month, just before my mother's presentingher withAunmarked cardboard box. Upon ore box andtheadorable pup sitting inside, the grandma burst into tear. My grandma isnt theonly oneappreciated the surprise. The video of my grandma's reacthas been " arawak thousands of hearts and likes on social media. Thisremind us that no matter how old you are at, just about every human alivewoutd'love to have a lovely new puppy in the house

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