2021-2022 英语周报 高考 14答案

参考范文:One possible versionDear Sir or MadamImLi Hua, a Senior Two student. I have read your advertisement for volunteers of the Sino-American YouthAmbassadorsonline Program. I'm writing to apply for participation in this activity.I consider myself a qualified candidate for the several reasons. First of all, a good command of English will make itpossible for me to communicate with fore gA members fluently. Besides, QIm)an outgoing person and have rich experiencein voluntary jobs, which can help get along well with American friends,in the'programI would like to present the long history and diverse culture of China to our friends and also learn more about Americaand its peopleI would appreciate it if you could consider my application and accept me as a member of the program. Lookingforward to your early reply.Yours sincerely,Li Hua

1D【解析】由题,因为AC=1CP=25,PA=,故PN+AC=CP工又CP=25,DP=BP=1.CD=√15,故DP=+CD)=CF,④D又D是PB的中点,所以△CBP为等腰三角形,所以故CA2+AB=CB2,CA⊥AB.故CA⊥面故三棱锥P一ABC的外接球与以AB尺的圆为底,CA为高的圆柱的外接球相同故外接球O的直径d所以球O帕故选D

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