2022九年级英语周报第十期HCG答案

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!

11c解合:由am=2an-2a4得am12∴数列{n1-an是以a2-a1=功首项,为公比的等比数列∴Ha=("(n∈N)当n≥埘时,an=(an-an)(an1-an2)…(-a)十(2-a) 吗 ()°223经检验,n=1时成立.an=2()1-12()m1-1故选C

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