八年级新目标英语周报2020_2021年23期答案

13.-4(x上)展开式的通项公式为T, 1=(一1)rC4x8-3”,令8-3r=5,得r=1,故所求的系数是一4.

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!

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