2022英语周报高一外研第40期答案

24.A推理判断题。由文章内容可知,本文是说吃播节目引起的食物浪费,所以在文章的开头提到Liulingyang是为了通过介绍吃播节目,引出食物浪费的话题。故选A项。C词义猜测题。根据画线单词所在句子的前半句food- wasting food shows are misleading可知thriftiness的意思应与 food-wasting相反 eating smartly意为“聪明地吃”: living healthily意为“健康地生活”;being economical意为“节俭的”: valuing food意为“重视食物”。放选C项26.C细节理解题。根据文章第五段中的 But as the market became more profitable, some people who can 'treally eat a huge amount of food, but still wanted to grab the money from audiences and advertisers,began to tum to fake eating可知,博主做吃播节目是为了赚钱。故选C项。27.D推理判断题。根据文章最后一段最后一句several live-streaming platforms have announced that theywill strengthen inspection of food shows, while some live-streamers voiced opposition to food waste andadvocated thriftiness可知些直播平台已经宣布,他们将加强对食品节自的检查,而些直播者则表示反对食品浪费,并主张节俭。由此可推断,吃播节目以后将会被仔细监管。故选D项m

24.解:(1)设粒子第一次在O点进入磁场时的速度大小为t0,根据动能定理有Ed=m2(3分)解得4=/2(2分)(2)粒子在磁场中运动的轨迹为半圆根据几何关系,粒子在磁场中做圆周运动的半径n=7(2分)根据牛顿第二定律有qB=m-(3分)解得B=2(2分)说明:只有结果,没有公式或文字说明的不给分。

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