2022英语周报七下外研版。答案

第二节【语篇类型】记叙文【主题语境】人与自我——生活态度【文章大意】作者被诊断得了乳腺癌,手术后为了避免复发,需要进行化疗,但因为特殊的形势,家人不能在医院陪护她。作者一度情绪低沉,但是慢慢地作者转变了态度。在医疗人员的关怀下,作者战胜了疾病,也收获了真正的友谊和自信。【写作指导】 Paragraph1的开头是"我决定做出更多积极的改变",因此本段续写要体现出作者在化疗过程中行为和态度的积极Paragraph2的开头是"此外,我从负贲化疗的团队中获得了支持",因此接下来的内容应该以描述医疗工作人员对作者的支持、作者和他们的相处以及作者的感受为主,可以作者对所有支持和帮助过自己的人表达感谢来作为文章的结尾。One possible versionaragraph II decided to make more positive changehair lossdoesn't mean I'm not pretty anymore. Failing to visit the hairdresser's, Idecided to shave my head. With teary eyes, I whispered, "Goodbye,mhair. Goodbye cancer. When I looked in the mirror I didnt see thehair that was missing, but the confidence on my face. And whergained my strength, instead of worrying about work arrangements, I reador listened to podcasts, which became rare relaxing time for meParagraph 2What's more, I found support in my chemo team. Initially nothingrightened me as much as the prospect of chemo especially withoutcompany of a loved one. But kindness and sensitivity of the chemo crewwas a comfort. I'd ask the nurses what they did in their off-time. Mteam would clap as I'd tick off another completed session, I treasure thememory of my recently completed final session: we danced as I"rangthe bell "-a graduation ceremony marking the end of a patientscourse of cherno

17.AD【关键能力】本题结合基因表达和表观遗传考查考生的理解能力、获取信息能力和应用能力【解题思路】由题干信息可知,胞嘧啶在发生甲基化后转变成5-甲基胞嘧啶,但仍能与鸟嘌呤互补配对,不会改变基因中碱基互补图对的方式,A正确。基因启动子序列中的胞嘧啶甲基化会抑制基因的转录,推测胞嘧啶甲基化不会促进RNA聚合酶与DNA分子特定位点的结合,B错误。胞嘧啶发生甲基化后仍可以与鸟嘌呤互补配对,推测其不影响DNA复制过程中氢键的形成,C错误。由题干信息可知,DNA甲基化能抑制某些基因的转录,即能关闭某些基因的表达,其与表观遗传有关,D正确

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