Unit

　　21 Human Biology 话题晨背

　　积累写作素材 自主排查

　　夯实基础知识 边讲边练

　　突破核心考点 在高考语境中提升解题技能 1 2 3 4 话题词汇 话题晨背

　　积累写作素材 1.invention n.发明 2.progress n.进步 3.digital adj.数字的 4.breakthrough n.突破 5.technical adj.技术的 6.automatic adj.自动的 7.make a study of研究 8.shop online网上购物 9.surf the Internet网上冲浪 10.browse the web page浏览网页 经典语篇 假如你是李华，最近老师向你们介绍了两种已灭绝的古代动物，并就哪一种动物更加适合被克隆举行了一次讨论。请你结合下表为你所在的小组写一篇发言稿，就选择理由及原因进行说明。 Name and date when last seen Information Dodo bird (1755) unable to fly；friendly and not harmful；large eggs and tasty meat that could be developed for food；need hot climate Aurochs (1627) large wild cattle；long horns and hair；hair is good for being made into clothes；horns can be used for decoration；need grasslands 注意：词数100左右。 佳作欣赏 Dear fellow students， I’m so honored to speak here on behalf of our group. After a heated discussion，we agreed that the dodo is the very animal that is well worth cloning.On the one hand，compared with the aurochs，the dodo is much smaller，which means that the dodo will consume much less food①.Besides，the dodo became extinct fairly recently so its DNA is still in good condition.On the other hand，the aurochs cannot live without grasslands，while the dodo can adapt to the hot climate easily.② If the dodo is cloned，that will be of great benefit to us.Because it can not only be a friendly animal but also be an ideal pet for families with children.What’s more，it may produce large nutritious eggs and tasty meat for people. All in all，the dodo would be the best choice to be brought③ back to life! That’s all! Thank you. 思维发散 1.将第①句中的定语从句改为非谓语形式

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