2022英语周报高考第2期答案

17解:()设数列{an}的首项是a,公差是d,则41 3d=11a1 3d=11………3分5a1 10d=4a1 8d 8a1 2d=8解得a1=2,d=3,……分所以an=3n-1.……………6分高考直通(2)由(1)得b=3 n cos n丌,……………7分所以72020=3c0丌 6c0s27 9c0s37 12c0s4丌 … 6060c0s2020………8分=-3 6-9 12--6057 6060…40分3 3 3030………12分

There is a worldwide debate over human cloning.(要点一:人类克隆是世界争议的话题Some people are in complete agreement with it, while others think it wrong.(高分句型一)〈要点二:有人支持,有人不赞成) Like dolly, it can benefit mankind but still lead tosome worries.(要点三:多莉羊的出现虽然有益于人类但是也引发了许多担忧) Humancloning not only satisfies Faye Wilson who cannot have a baby but also excites SeverinoAntinori who desires to clone a human.〈要点四:人类克隆不但满足了不能要孩子的FayeWilson等人,也激发了渴望兗隆人类的 Severino Antinori等人〉 However, lan wilmutbelieves researchers should focus on creating new tissues and organs to cure serious diseasesinstead of copies of humans.(高分句型二)〈要点五:然而 an Wilmut认为研究人员应该专注新组织和器官的研究上来治愈疾病而不是去克隆人类〉

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