Extensive reading
克隆技术大事记
1938年:德国科学家首次提出克隆想法。 年 德国科学家首次提出克隆想法。 1952年 科学家开始用青蛙进行克隆实验。 1952年:科学家开始用青蛙进行克隆实验。 1970年:克隆青蛙实验取得突破,青蛙卵发育 年 克隆青蛙实验取得突破, 成了蝌蚪, 但是在开始进食以后死亡。 成了蝌蚪, 但是在开始进食以后死亡。
1981年:科学家进行克隆鼠实验,据称用 年 科学家进行克隆鼠实验, 鼠胚胎细胞培育出了正常的鼠。 鼠胚胎细胞培育出了正常的鼠。 1984年:第一只胚胎克隆羊诞生。 年 第一只胚胎克隆羊诞生。 1997年2月24日 1997年2月24日:英国罗斯林研究所宣布 克隆羊培育成功。科学家用取自一只6 克隆羊培育成功。科学家用取自一只6岁 成年羊的乳腺细胞培育成功一只克隆羊。 成年羊的乳腺细胞培育成功一只克隆羊。
1998年2月23日:英国PPL医疗公司宣布 年 月 日 医疗公司宣布, 医疗公司宣布 该公司克隆出一头牛犊“杰弗逊先生” 该公司克隆出一头牛犊“杰弗逊先生”。 1998年7月5日:日本科学家宣布 他们利 年 月 日 本科学家宣布,他们利 用成年动物体细胞克隆的两头牛犊诞生。 用成年动物体细胞克隆的两头牛犊诞生。
1998年7月22日:科学家采用一种新克隆 年 月 日 技术, 技术,用成年鼠的体细胞成功地培育出 了第三代共50多只克隆鼠, 50多只克隆鼠 了第三代共50多只克隆鼠,这是人类第 一次用克隆动物克隆出克隆动物。 一次用克隆动物克隆出克隆动物。 1999年5月31日:美国夏威夷大学的科学 年 月 日 家,利用成年体细胞克隆出第一只雄性 老鼠。 老鼠。
1999年 17日 1999 年 6 月 17 日 : 以美藉华人科学家杨 向中为首的研究小组利用一头13 岁高 向中为首的研究小组利用一头 13岁高 13 龄的母牛耳朵上取出的细胞克隆出小 牛。 2000年 2000年1月3日:美国著名华人杨向中, 美国著名华人杨向中, 用体外长期培养后的公牛耳皮细胞成 功克隆出6头牛犊。 功克隆出6头牛犊。
2000年 2000年1月:美国科学家宣布克隆猴成功, 美国科学家宣布克隆猴成功, 这只恒河猴被命名“泰特拉” 这只恒河猴被命名“泰特拉”。 2000年3月14日:曾参与克隆小羊“多利” 2000年 14日 曾参与克隆小羊“多利” 的英国PPL公司宣布,他们成功培育出5 的英国PPL公司宣布,他们成功培育出5头 PPL公司宣布 克隆猪。 克隆猪。
Please enjoy some pictures about dinosaurs.
霸王龙tyrannosaurus 霸王龙
剑龙stegosaurs 剑龙
角龙 ceratopsids
雷龙 brontosaurus
翼龙pterodactyl 翼龙
Answer the following questions:

  1. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group?
  2.Why is it wrong to clone an extinct animal if it would have to live in a zoo?
  3.Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years?
Keys:

  1. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group? There will not be enough genetic variation in the group to be able to resist new illnesses.

  2. Why is it wrong to clone an extinct animal if it would have to live in a zoo? It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers. The zoo is not a natural environment for a wild animal.

  3. Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years? The DNA of animals more than 10,000 years old is not suitable for cloning, for it can’t survive so long.
主旨大意

  1. The writer of the text A. is excited by the possibility of cloning fierce and extinct animals B. believes that extinct animals can be brought back to life by cloning C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth
细枝末节

  2. The film Jurassic Park is popular because . A. people are interested in the subject A of cloning B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs D. it proves very interesting

  3. Which of the following is true? A. Mice were cloned in 19
  81. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison” D. China was successful in cloning mammals.

  4. The reasons why a group of cloned animals all die of the same illness do NOT include. A. they have the same arrangement of genes B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one D. their arrangement of genes can not resist that new disease
推理判断

  5. We can infer from the text that A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10 000 year
True or false.

  1. Scientists are still experimenting with cloning mammals because they think it can make money. F
  2. The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.
  3. If we can clone any extinct animals, we should let them live in a zoo. F
F
长句难句

  1. The popularity of the film Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs, proves how interested ordinary people are in the subject.
电影《侏罗纪公园》 电影《侏罗纪公园》的欢迎证实 了普通人对这一话题是多么感兴趣, 了普通人对这一话题是多么感兴趣 在该电影中一位科学家克隆了几种不 同的恐龙。 同的恐龙。 in which引导定语从句 how引导 引导定语从句, 引导定语从句 引导 宾语从句。 宾语从句。

  2. From time to time people suggest that the animals that have disappeared from the earth, like dinosaurs, can possibly be brought back to life through cloning. 人们时常设想从地球上消失的动物, 人们时常设想从地球上消失的动物 例如恐龙,有可能通过克隆技术使它 例如恐龙 有可能通过克隆技术使它 们复活。 们复活。 from time to time有时 间或 偶尔 有时, 有时 间或, 偶尔, = occasionally, now and then。 。

  3. It is useless to clone an animal if there is not enough diversity in the group for it to overcome illnesses. 该群中如果没有足够的多样性使它 克服疾病,克隆动物就没有用。 克服疾病,克隆动物就没有用。 当动词不定式、 当动词不定式、动名词或从句作主语 通常把它们放在谓语之后, 而用it 时, 通常把它们放在谓语之后 而用 作句子的形式主语。 作句子的形式主语。

  4. Diversity in a group means having animals with their genes arranged in different ways. 群中的多样性指的是拥有基因排列 方式不同的动物。 方式不同的动物。 with their genes arranged in different ways作定语 in different ways 以不 作定语, 同的方式。 同的方式。

  5. ...but others will survive and pass on the ability to resist that disease to their children. ......其他的将存活下来并传递给其后 其他的将存活下来并传递给其后 代抵抗这种病的能力。 代抵抗这种病的能力。 resist 作及物动词主要有三个义项 作及物动词主要有三个义项: 抵抗, 对抗; 抵挡, 防止; 抵抗 对抗 抵挡 防止 (与cannot, could not连用 连用) 与 连用 无法抗拒, 无法抵挡。 无法抗拒 无法抵挡。

  6. Based on what we know now, you can not clone animals that have been extinct longer than 10000 years. 据我们现在所知, 据我们现在所知 绝种一万年以上的 动物不能克隆。 动物不能克隆。 base on/upon 以……为基础 依据 为基础, 为基础 其结构为: 其结构为 base sth. on/upon sth. is based on/upon
May the best animal win!
Which extinct animals are worth restoring by means of cloning? Choose one and use the information to help you argue why this animal should be restored to the earth.
Great Auk (18
  44)
Dodo bird (17
  55)
Auroch (16
  27)
Quagga (18
  83)
A sample dialogue (P
  16)
S1: I think the dodo bird should be returned to the earth. It hasn't been extinct very long. So its DNA will still be good enough for cloning. S2: Yes and sailors in the past always described the dodo as being a very friendly animal. So it would make a good pet. It wasn't too large either.
I can't see any other extinct animals becoming a pet, can you? S1: No, indeed. 1 know it's a bird like the Great Auk but neither of them could fly. So if you kept either, it wouldn't escape from a park, a family or its home in the wild. You could also farm a dodo, unlike all the others, and produce many of them as exotic pets.
S2: And what about its large nutritious eggs? Just one would feed a large family. So there's more than one reason for producing it in commercial numbers. S1: Did you know that its meat is very tasty too! Perhaps it could be farmed like ostriches and provide a good source of protein.
S2: The only problem is that it needs hot climate to survive. But that's easy to provide with all its other advantages. I don't think any of the other animals stands a chance against the dodo. S1: So we both agree that the best extinct animal to be cloned is the dodo bird. S2: Yes.

  3. A sample report(p.
  17)
The dodo is the most suitable animal to be cloned for several reasons. First, it became extinct fairly recently so its DNA is still in good condition. Second, it was always described as being a very friendly animal and it would make a good pet. Third, it cannot fly.
So it wouldn't escape from a park, a family or its home in the wild. You could farm a dodo and sell it as an exotic pet. Fourth, it produces large nutritious eggs which could feed a large family. Fifth, its meat is very tasty too!
Perhaps it could be farmed like ostriches and provide a good source of protein. Although it needs hot climate to survive, we feel that this can be easily provided. In return the dodo would provide a most useful source of pleasure and food.
Homework
Finish Ex. 2, Page16; Ex. 3-4, Page
  17.
 

相关内容

高中英语 Unit2《Cloning》课件-Grammar 新人教版选修8

   Grammar 语法精解( 语法精解(一) 1. 同位语 同位语the Appositive 同位语是句子成分的一种, 同位语是句子成分的一种 它位于名 词、代词后面, 说明它们的性质和情 代词后面 它可以由名词、代词、 况, 它可以由名词、代词、名词性短 语或从句充当。 语或从句充当。 同位语的表现形式有以下几种: 同位语的表现形式有以下几种: (1) 名词 Tom, our monitor, is a handsome boy. (2) 代词 I myself will do the e ...

英语:Unit 1 Living well(Using language)课件(新人教版选修7)

   人教课标版 选修7 高二 选修 Unit 1 Using Language Leading in Mount Kilimanjaro 乞力马札罗山 Mount Kilimanjaro 乞力马札罗山 Kilimanjaro is the highest mountain in Africa and the tallest freestanding mountain known to man. It is a mountain where you can hike for more than 9 ...

高中英语 Unit2《Cloning》课件-Reading 新人教版选修8

   Reading Warming up In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ. 一株草莓依靠它沿地“爬走” 一株草莓依靠它沿地“爬走”的匍匐 茎,一年内就能长出数百株草莓苗 一年内就能长出数百株草莓苗 富贵竹插枝即活 仙人掌每块落地就生根 Dolly是世界上第 是世界上第 一例用 ...

英语:Unit_1_Language_pointsPPT学案(新人教版选修7)

   Unit 1 Language points make it + adj. + (for sb )to do ( find , think, consider ….) 1. Too many new words make it difficult for us to comprehend the passage. They find it impossible to get everything reader in time. She thought it unnecessary to ar ...

英语:_Unit2_《Cloning》课件-Vocabulary(新人教版选修8)

   Important words and phrases A:重点单词 : 1. differ vi. 观察示例: 观察示例 In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-make. Explain how they differ. 两人一组, 两人一组 观察图片并讨论哪些是自然无性 繁殖, 哪些是人工的。解释它们的区别 区别。 繁殖 哪些是人工 ...

英语:Unit5《The power of nature》using language课件(3)(新人教版选修6)

   Some tourist attractions in China Mount Tai Mount Hua Jiu Zhai Gou Giant panda Research Center Hot spring Changbaishan Tianchi The Lake of Heaven Reading and Comprehension Reading the article and tell the statements are true or false: 1.Changbaisha ...

英语人教版选修六第三单元using language

   Using language Warming up HIV is the virus that causes AIDS. AIDS stands for Acquired Immune Deficiency Syndrome. (后天免疫缺损综合症) 后天免疫缺损综合症) 后天免疫缺损综合症 virus Some facts: By the end of 2003, an estimated 42 million around the world were living with HIV/A ...

高一英语第二单元using language教案

       本文由7wvsfjp930贡献     doc          没有  百度文库财富值请到  www.365xueyuan.com  免费帮下载  百度文库积分资料     高一英语第二单元 using language 教案 教案制作:杜晓君 Teaching aims:  To read out and talk about STANDARD ENGLISH AND DIALECTS To write about le arning English by brainstormi ...

高一英语必修5unit3《using language》

   1.consider ⑴考虑 vt. 考虑; 考虑;认为 consider(doing)sth. 考虑(做)某事 ( 考虑( ) eg: You’d better consider my suggestion. 你 考虑 考虑 建议 建议。 I’m considering going abroad some day. 考虑 考虑 国。 ⑵认为 consider sb./sth+(as)+adj./n. eg: We consider him honest. 们认为 诚实。 诚实。 consi ...

高中英语选修7 unit 1 Language points in__ Reading__ I

   Book 7 Unit 1 Language Points in Reading I 1. disability. n disable. v disabled. adj disability既有可数又有不可数 表示“残疾” 既有可数又有不可数. 既有可数又有不可数 表示“残疾” 用作可数 表示“无能,劳动能力丧失” 可数, 用作可数,表示“无能,劳动能力丧失”用 不可数; 作不可数; disable表示“使残疾,使…能力丧失”; 表示“ 能力丧失” 表示 使残疾, 能力丧失 disabled ...

热门内容

二年级英语上册期中试卷9

   小学英语二年级期中试题 学校 班级 姓名 一 二 三 四 五 六 七 八 总分 温馨提示:小朋友们,今天我们将共同完成本次期中考试的试 温馨提示:小朋友们,今天我们将共同完成本次期中考试的试 题,相信 大家一定能够认真听、努力做、开动脑筋, 大家一定能够认真听、努力做、开动脑筋,交出一份工整满 意的答卷。加油啊!! 意的答卷。加油啊! ! 听力部分( 听力部分(40 点) 一、听音选出你所听到的字母、词或断语。 20 点) 听音选出你所听到的字母、词或断语。 (20 ( ( ( ( ( ( ...

最佳学英语方法

   最佳答案 1》学英语简单吗?肯定会有许多学生说:“难死了”。为什么有好多学生对英语的学习都感到头疼呢?答案只有一个:“不得法。” 英语与 汉语一样都是一种语言,为什么你说汉语会如此流利?那是因为你置身于一个汉语环境中,如果你在伦敦呆上半年,保准说起英语来会 非常流利。但很多中学生没有很好的英语环境,那么你可以自己设置一个英语环境,坚持“多说”、“多听”、“多读”、“多写”,那么你的英语 成绩肯定会很出色。 一、多“说”。 自己多创造机会与英语教师多讲英语,见了同学,尤其是和好朋友在一起时尽量 ...

英语双学位

   Week 3 Passage A: Enjoy Your Food Passage B: Eating with Seasons Passage C: Delicious Phrases Passage D: Dealing with Adversity Week 4 Passage A: Back Seat Learners Passage B: The Best Time of My Life Passage C: Vote for Our Hero of the Year Passag ...

高中英语新课程的实践与反思

   高中英语新课程的实践与反思 ??锦州地区高中英语学科新课程实施情况的调研报告 锦州市教师进修学院高中研训部 吴 萍 自 2006 年 9 月,辽宁省所有高一年级同时进入高中课程改革实验。为顺利推进锦州市 普通高中新课程实验工作, 及时掌握情况和了解存在的问题, 总结课程改革实验工作进程中 的经验,并对下一步工作提出建议和意见,2006 年 9 月 19 日至 10 月 26 日,在市教育局基 础教育处的带领下,高中研训部全体教研员对锦州地区的 13 所高中进行了专项调研。 一、调研的内容、对 ...

中考英语补全对话

   中考英语补全对话、 补全对话、 书面表达命题与备考 书面表达命题与备考 宝鸡市教育局教研室 任军利 renjunliabc@126.com 一、中考英语 补全对话命题与备考 “补全对话”命题与备考 补全对话” 主要交流项目为: (1)打电话 (2)购物 (3)问路和应答 ) ) ) (4)看病 ) (5)就餐 (6)借东西 ) ) (7)讨论计划(8)谈论天气 )讨论计划( ) (9)邀请和约会 ) 《课程标准》对初中毕业生口语技能的要求 课程标准》 "能就简单的话题提供信息,表达简单的观 ...