英语周报2022 第37期hz答案

12.AC【解析】两物体A和B随着圆盘转动时,合外力提供向心力物体B的半径比物体A的半径大,所以物体B所需的向心力大,绳子拉力相等,所以当圆盘转速加快到两物体刚好还未发生滑动时,物体B的最大静摩擦力方向指向圆心,物体A的最大静摩擦力方向背离圆心,根据牛顿第二定律得Tmo2r,T pmg=mo2·2r,解得T=3mg级,A、C项正确,B项错误;烧断绳子瞬间物体A所需的向心力为2pmg,物体A的最大静摩擦力不足以提供向心力,则物体A做离心运动,D项错误。

【语篇导读】本文是夹叙夹议文,告诉我们“远亲不如近邻”的道理。8.A【解析】细节理解题。根据第一段 Muckprobably it is a close female friend calling to tell you thatshe has split up with her boyfriend again or perhaps simply that a good movie has just started on TV.可知最有可能来自一个朋友,故选A。9.C【解析】细节理解题。根据第三段 TV shows liktell us that our romantic relationships may not lastwe need to keep in touch with our close friends ifwant to survive.可知 rV shows like friends告诉我们亲密的朋友帮助我们面对生活中的困难。故选C。10.D【解析】推理判断题。根据最后一段 This is trueof Erika and Janes friendship. With Erika's family200 miles away, it is Jane who keeps a spare set of keysto Erikas apartment and waters her plants wheneverhe is away.可知Erka和Jane在日常生活中互相信任和支持。故选D1].A【解析】推理判断题。纵观全文,特别是最后have more to do with my life than ray paents and, therefore, I dont have to spend a lot of timeexplaining things to them. Friends are more up to datwith what is happening.可知远亲不如近邻。故选A

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