2022英语周报八年级第四期zsz答案

21.(10分)(1)E先迅减少,不久后达到对平衡的水平(2分)(2)向叶绿体中注入被放射性间位素标记的B物质,并将植物置于光照等其他条件均适宜的环境中一段时间后,采用二定的方法橡测光合产物葡萄糖中是否出现了放射性。(3分)(3)抑制②24D③甲组枝条上叶片的光合速率低于乙组(2分)

第二节书面表达Dear Henry,Im Li Hua from your English speaking class lastterm. I m writing to ask for your helpNow I am preparing to attend MUN next weckHowever,have some difficulty with concepts andexpressions of the current affairs and speech skills. Iwonder if I can borrow your Dictionary of englishMedia. which you presented in class. Furthermore.I amnot quite sure about how to make a convincing andpersuasive speech at MUN. Could you be so kind as to giveme some advice?I know you have a very busy schedule, but I'd be verygrateful if you could spare some time to give me face-to-acc instructions. Thank you for your kindnessI'm looking forward to your replyYoursLi Hua

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