九师联盟 2022-2023学年高三10月质量检测生物X试题答案

九师联盟 2022-2023学年高三10月质量检测生物X试题答案，目前大联考答案网已经汇总了九师联盟 2022-2023学年高三10月质量检测生物X试题答案的各科答案和试卷，更多全国100所名校答案请关注本网站。

15.(-，-号]因为函数fx)=20221与g(x)=x2-(a 1)x 2-a是区间x∈[1,2]上的“3阶友好函数”，所以f(x)min·g(x)mm≥3在x∈[1,2]上恒成立，又f(x)=2022x-1在x∈[1,2]上单调递增，所以f(x)mim=f(1)=1,所以g(x)=x2-(a十1)x十2-a≥3在x∈[1,2]上恒成立，即a

Dear Jack,Our school encouraged us to experience some future careers last vacation.Some students choose to work aschoseeither cashiers in a store and waiters at a restaurant.I was one of the 500 student to join in the activity.I decidedorstudentsA be an assistant in a photo studio because of I love taking photos.With the help of a advanced photographer intoanthe studio,I opened my imagination in my daily work.I also developed practically skills which are necessary forpracticalthem to face future challenges.The most important thing I've learned are to improve myselfafterI get mymeiSbefore/untildream job.Yours,Li Hua