2022八新目标英语周报25期答案

1.参考答案C说明分析抗体的化学本质是蛋白质,在体外无细胞翻译系统中能够合成抗体,说明其中含有氨基酸(原料)和tRNA(运输工具),A项正确;体外无细胞翻译系统中合成的抗体没有生物活性,其原因是没有经过内质网的加工,所以体外无细胞翻译系统中不含内质网,但含有核糖体,B项正确;在加入mRNA和内质网后,可从内质网的网腔中获得具有生物活性的抗体,说明内质网对抗体进行了加工,所以前后合成的抗体在空间结构上不完全相同,但氨基酸的数量及排列顺序相同,C项错误,D项正确。

第二节书面表达【写作指导】类型:中请信审题}时态:一般现在时为主人称:第一人称为主Para,1与交代写信目的,提出中请语言技能个人能力电脑技能写作思路Para2阐述个人优势相关经验aa3}结尾点题,表达期待,盼回复【佳作展台】Dear Mr. JohnsonI'm Li Hua. Knowing you are coming lo teach at our school and needsomeone to help you with your work and life in China, I'm writing to applyI have confidence I am equal lo thiFirst. hecommand of English. I have no difficulty communicating with youBesides, i have been working as an assistant to my English teacher, so Iknow what to expect in this job. Thus, I believe I'll be an ideal candidateI appreciate it if you could consider my application favorablyLooking forw ard to vour early replyYours sincerely亮点梳理】亮点词汇: be equal to, have a good command ofhave no difficulty in )doing sfal candidappreciateorably等亮点结构:非谓语动诃短语作原因状语( Knowing you are comingto teach at our school and need someone to help you with your worklife in china; having a good command of English);特殊疑问词 不定式what to expect in this job)

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