2021-2022，英语周报40期。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!

生物(一)C病毒营寄生生活,侵染宿主细胞并在宿主细胞内大量增殖,这个过程需要宿主细胞的核糖体合成病毒的蛋白质外壳,原料也由宿主细胞提供,A错误;2019-nCOV病毒内只有RNA,没有DNA,遗传物质是RNA,B错误;人体对该病毒的免疫机理属于特异性免疫(体液免疫和细胞免疫),与体液中杀菌物质(如溶菌酶)灭菌原理(非特异性免疫)不同,C正确;病毒导致宿主细胞破裂有两种情况,一是效应T细胞作用下主动死亡,即细胞凋亡,二是病毒大量繁殖导致宿主细胞破裂死亡,即细胞坏死,D错误伽为实验的因变量,相

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