2018-2019版高中英语 unit 1 tales of the unexplained period one welcome to the unit & reading课件 牛津译林必修2
91页1、Unit 1 Tales of the unexplained,There are many people who often discuss whether aliens(外星人) are real or not.There are also some different stories about aliens.Do aliens really exist in space?When you think of aliens,what comes to your mind?Whatever pictures we have of aliens in our mind is due to the influence from newspapers,the Internet and the TV.There could be life forms as tiny(极小的) as some micro-organisms or as large as giant dinosaurs.Scientists argue that the universe is far too huge and
2、 it is very unlikely that only our planet can support life.There must be other planets which support life but are unknown to us.,话题导入,One of the organizations working on outer space life is SETI.Astroph-ysicist(天体物理学家) Carl Sagan believes the presence of life outside the Earth.Frank Drake,founder of SETI,is another scientist who has devoted his life to providing the presence of life outside the Earth.Many other research projects have been and are still being carried out to collect evidence of li
3、fe outside the Earth.In fact,Bruno DArgenio and Giuseppe Geraci have found evidence of life in 4.5 billion-year-old meteorites(陨石),Just as there are people who support the existence of life outside the Earth,there are others who think of it as a far-fetched idea.They argue,if there is life outside the Earth,why have we not been able to get any hard evidence till today?,根据上文判断正(T)误(F) 1.The scientists are sure that there are some aliens outside the Earth.( ) 2.People have different opinions on wh
4、ether there is life outside the Earth.( ),F,T,基础自测,内容索引,要点探究,达标检测,课文预读,Period One Welcome to the unit & Reading,基础自测,1. adj.无法解释的,神秘的 v.说明,解释 2. adj.困惑的,茫然的 adj.令人困惑的 3. adj.由于,因为;预期的;适当的 4. vi.消失;失踪 vi.出现 5. n.目击者,证人 vt.目击,见证,unexplained,explain,puzzled,puzzling,due,disappear,appear,witness,.重点单词,6. n.& vi.闪光,闪耀 7. vt.假定;认为 8. n.施工;建筑物 vt.建设;建造 9. vi.发生 10. adv.& prep.在(轮船、飞机、火车等)上;上(轮船、飞机、火 车等) 11. n.可能性 adj.可能的 12. n.案件;具体情况,实例,flash,assume,construction,construct,occur,aboard,possibility,poss
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