英语周报高三2820答案

Writing 3Dear JamesI am glad to have received the book Biogra phy o/Lincoln you bought for me. I like it very much and amwriting specially to express my thanks for your kindness.You know, Lincoln is my hero. He came from a poorfamily and had only several monthseducationHowever, he became a present of the United States. Whata great man! When I received the book, I felt more thanexcited. That was not only because you sent me a birthdaresent but also because it was the exact book I wantedYou are so thoughtful!Thanks again and best wishes to youYLi h

4.【答案】C【解析】材料三“如果一切顺利,5月份有望揭盲。”5.【答案】D【解析】A项以偏概全,材料一中“动物实验阶段,通常需要两个重要步骤:在适当的动物模型中检测疫苗是否具有保护作用:在动物身上进行毒性测试。”B由材料二的图表可知,死亡人数并未呈“逐年”下降趋势,而是忽高忽低。C项说法错误。材料三可知“新冠肺炎防控的科技支撑,疫苗是最有力的武器之一。”6.【答案】①疫苗的研发过程一般都很漫长,按照通行惯例,疫苗上市前要通过4个阶段的严格测试。②疫苗要大规模在健康人群中接种,其安全性、有效性需要经过严格验证。疫苗的研发不能在任何一个环节留下一丝隐患。③疫情防控举措逐渐取得成效,也给疫苗的开发带来了障碍。(每点2分,共6分)

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