2022高一英语必修一外研版第七期周报答案

19.A【解析】核酸分为DNA和RNA,DNA主要在细胞核、RNA主要在细胞质,细胞核和细胞质均有很多种类的蛋白质,A错误;核酸是生物的遗传物质,蛋白质是生命活动的主要承担者,B正确;核酸的合成需要某些种类的蛋白质(酶)参与,蛋白质的合成需要以核酸为模板,C、D正确。

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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