2021-2022英语周报56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!

29.①a(1分)②b(1分)③某种RNA的合成以及核糖体的形成(1分)④嵴(1分)⑤磷脂双分子层(1分)⑥线粒体中没有能氧化分解葡萄糖的酶(2分)⑦h、g(1分)⑧C含量升高,C5含量降低(1分)【解析】本题主要考察细胞的结构和功能以及光合作用,考查学生的理解能力。与光合作用有关的酶分布在叶绿体的类囊体薄膜和叶绿体基质中。若叶绿体的类囊体薄膜受损,则光反应受阻,产生的ATP和H]减少,消耗的C3和生成的C5都减少,导致C3的含量升高、C5的含量降低。

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