英语周报高二2022 第36期答案

3D【解析】粒子在加速电场中加速,由动能定理得q=2mv2=0,粒子在磁场中做匀速团周运动,洛伦兹力提供向心力,由牛顿第二定律得q0B=m,解得U=-,故为使a粒子9He)经同一匀强磁场偏转后仍从同一出口离开磁场,需将加速电压变为原来的方,故D项正确A、BC项错误

Dear Mike,Hows it going recently! Ive heard that you'l studywith me for some time in the future as an exchange studentIt'l be my pleasure to tell you something aboutour teachersTo be frankIn our school, my tavonte teacher Is ourChinese teacher, Ms. Liu. She is in her thirties and looksEmuch younger for her age. She is tall and slim with longhair reaching her waist. She is not only strict with us, butaho kind and optimistic about life, which makes her sopopular among us. She always encourages us to overcomethe difficulties in our life More importantly, her way ofteaching that makes Chinese so easy and interesting for usto learn, is nothing like that of the other teachers'. It isconfirmed that under the guidance of such a talentedteacher, we will achieve what we want and be more confident in our future lifeI'm looking forward to your arrival and welcome to ourchoBest wishes and stay healthy.Yours,Ua

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