英语周报2018-2022 23期八年纪答案

10.A由题意得,T4:0f(x)=3c0sx+q|,将函数f(x)T4π22的图象向右平移个单位长度后,得到∫x-=3c0s3xx+9=63cq=+k(k∈Z),∴p=+km(k∈Z)qf(x)=3cos=x习令2≤≤+2hx(k∈Z),解得x+4Mx5+4k(k∈),6令k=-1得函数f(x)的个单调递减区间为、7xπ6·2|故选A

书面表达One possible version:NOTICEA sports meeting will be held in the playground of our school from next Thursday to FridayAs you know, the pressure of study is very heavy now, especially for those senior 3. So the purpose of the sports meeting is to letevery student get relaxed, as a result of which we students can live happily and heal thilyEveryone is welcome to take part in it. Those who perform excellently at the sports meeting will get prizes. But don' t take theresults so serously because taking part is more important than the result. Good luck to everyone!

以上就是英语周报2018-2022 23期八年纪答案，更多英语周报答案请关注本网站。