2022英语周报高二第46期答案

第二节书面表达【写作指导】1.审题立意:本题要求就增设社团写一则征集意见启事而非表达自己对社团的想法,动笔前一定要看清题目要求和写作话题。2.构思谋篇:结合写作任务背景和所给任务要点,安排好内容和层次,铺设好各要点间的过渡,处理好开头和结尾。3.优化语言:词汇上可多使用形容词和短语,并适当使用多种亮点结构如非谓语动词短语、复合句和倒装句等。【佳作展台Your Opinions WantedTo help us develop wide interests as well as live a more colourful andelaxing campus life, our school intends to set up several new clubs ofextra-curricular activities. As everyone has their preference, we are hereto seek all your opinions so that the new clubs will satisfy you most. Youare expected to write down top three clubs you want and relative details inthe form which you can download on our school website. The form shouldbe sent to xhstudentunion 163. com by April 1 st. Every suggestion ischerished and just make your voice heard【亮点梳理】亮点词汇: intends, set up, preference, relativedetails, make your voice heard亮点句式:原因状语从句( As everyone has their preference),定语从句( which you can download on our school website)等。

19ABD【解析】电磁阻尼是指导体在磁场中运动时,氵感应电流会使导体受到安培力,安培力的方向总是阻碍导体的运动,A项正确;电磁炉应用的是涡流的热效应,在金属锅中产生涡流,使锅体发热从而加热:食物,B项正确;金属探测器的探测原理是由于电磁感应在被探测物中产生涡流来进行工作,食品中的砂石不是金属,所以不能产生涡流,C项错误;由楞次定律可知,感应电流的结果总是阻碍磁场跟线框的相对运动。若磁铁运动,线框中的感应电流结果是安培力的方向与磁铁运动方向相同,即电磁驱动若磁场不动,线框运动,则感应电流的结果是阻碍线曾框的运动,即电磁阻尼,D项正确

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