2021-2022英语周报高考55期答案

6C【解析】因为|a|=1.a与b的夹角为,所以ab=|b1c3=2b1.把|xa+2b1≥|a+b两边平方,整理可得x2+2|b|x+3b!2-|b|-1≥0,所以△=4|b|2-4(3|b|2-|b|-1)≤0,即(|b|-1)(2|b|+1)≥0,解得|b|≥1.故选C

第三节书面表达wersionDear Sir or MadamMy name is Li Hua. As an exchange student fromChina, I am studying in a local school. I am reallydelighted to learn that a volunteer for your Chinese culturallic exhibition is required and I'm confident that I amtruly fit for thestart with, my advantage first lies in the fact that IChina and used to beand quite familiar with Chinese relics. Further-more, being an outgoing and optimistic boy, I am good atcommunicating with others and introducing Chinese cultureto the world is always my honor and my pleasure. Finallythere is no problem with my spoken English, as I havelived here for almost a year and I have no difficulty commu-dicating with others in EnglishI would really appreciate it if you can offer me thechance to be a volunteer in your museum. I am looking forward to your early reply.Li Hua

以上就是2021-2022英语周报高考55期答案，更多英语周报答案请关注本网站。