课件50张PPT。高 考 总 复 习艺考生英语Unit 1 A land of diversity基础必备 选修八 Units 1~5谢谢观看课件49张PPT。高 考 总 复 习艺考生英语Unit 2 Cloning基础必备 选修八 Units 1~5谢谢观看课件45张PPT。高 考 总 复 习艺考生英语Unit 3 Inventors and inventions基础必备 选修八 Units 1~5谢谢观看课件43张PPT。高 考 总 复 习艺考生英语Unit 4 Pygmalion基础必备 选修八 Units 1~5谢谢观看课件40张PPT。高 考 总 复 习艺考生英语Unit 5 Meeting your ancestors基础必备 选修八 Units 1~5谢谢观看 [基础巩固] 单句语法填空 1.With the tourist trade booming (boom),the residents of this area are paying more attention to the protection of nature. 2.The advertisement for engineers in the local paper attracted many applicants (apply). 3.The bell indicating (indicate) the end of the class rang,which interrupted our heated discussion. 4.When it comes to education, the/a majority of people believe that education is a lifetime study. 5.She became the first black woman to_be_elected (elect) to the Senate. 6.The site of the new park has been _marked (mark) out. 7.It is honorable to make a life with your hands while depending on others is a shame. 8.Tom overslept this morning.This is why he was late for work. 9. It occurred to me that one shouldn't lose heart when in trouble. 10.It was several minutes before I could take in what he was saying. [能力提升] Ⅰ.阅读理解 We are born,we live,we age and we die.This is the natural cycle of human existence.The world record holder for the longest human life is Jeanne Louise Calment of France,who lived to 122 years and 164 days.But what is the secret to a long life? Human beings are complex,and we live for a very long time,making studies of the process of ageing a serious challenge.Most of the research to date has therefore been done in animals.Two of the favorite species for these kinds of studies are Caenorhabditis elegans,a very tiny worm,and Mus musculus,the laboratory mouse.The worms generally live for just two or three weeks,while the mice have an upper lifespan of around three years,and both have a lot of genes that are quite similar to our own.Using these models,researchers have identified several possible candidates,including stem cells,calorie restriction(能量限制),and even some drugs,could hold off the ageing process. After years of careful research,there is now a wealth of knowledge just waiting to be tested in people.We spoke to Brian Kennedy,CEO of the Buck Institute for Research on Aging.“We're a nonprofit medical research institute that's focused on understanding ageing.We realized when the doors opened in 1999 that ageing was the biggest risk factor behind all of the diseases that we care about,”he explains.“I think the exciting thing that we have learned over the past decade is that it's really possible to slow ageing in a mouse,or even in primates(灵长类动物).The challenge now is to take that knowledge and apply it to humans.” [语篇导读] 本文是一篇说明文,衰 ... ...
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