Pre-reading
In pairs discuss what you understand about clothing. Then list the questions you want to find out. Share your lists with one another.
Questions about cloning

  1. What is a clone? A clone is a group of cells or organisms that are genetically identical and have been produced asexually from the same original cell. They include natural and man-made clones.

  2. How is a clone produced? The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.

  3. What benefits can humans gain from cloning?
  1) Medical cloning can help cure serious illnesses that ruin one’s quality of life (such as Parkinson’s disease or Alzheimer’s disease).
  2) It can help infertile people have babies.

  4. What problems may arise when humans are cloned?
  1) People may want to clone themselves so they can live forever.
  2) People may want to clone dead children.
  3) People may want to clone their favorite pets.
Reading
CLONING: WHERE IS IT LEADING US?
Choose the right answer according to the text.

  1. The main idea of the text is A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden. C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future.

  2.Dolly the sheep. A. looked exactly like the sheep that provides the egg. B. was the exact copy of the sheep that provides the nucleus. C. looked like the sheep that gave birth to it. D. had the characteristics of all three sheep.

  3. It can be inferred from the passage that a cloned animal. A. usually lives as long as the original one B. usually lives longer than the original one C. usually lives shorter than the original one D. is usually as healthy as the original one

  4. Which of the following is not an advantage of cloning? A. Cloning can be used for medical purposes. B. Large quantities of food can be produced by cloning. C. Cloning can help keep animals from becoming extinct. D. Famous persons who have passed away can be cloned.

  5. What is people’s fear about human cloning? Which of the following is wrong? A. Cloned Hitlers would do harm to the world. B. Cloned people may be killed at will for medical aid. C. A woman would have difficulty recognizing her real husband. D. Men will die out because a woman can give birth to a baby without a husband.

  6. The cloning of Dolly the sheep succeeded because. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed

  7. The lamb is the clone of the cell from sheep because. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep
Careful reading
Read the text again and find out the main idea of each paragraph .
Para. 1 Cloning is a way of making an exact copy of another animal and plant . Para. 2 Cloning has two major uses. Para. 3 The problems of Dolly. Para. 4 The effect of Dolly Para. 5 It is forbidden to clone human being.
Fill in the chart using the information from the text. Add one reason of your own in each column. Problems or dangers Advantages of of cloning cloning
Problems or dangers of cloning Animal clones may develop the illnesses of older animals. Animal clones may die younger than the donor animals.
Advantages of cloning Medical cloning could produce cures for serious degenerative(变 变 质的) 质的)illnesses in humans. Cloning plants can produce plants of similar quality for sale.
Problems or dangers Advantages of of cloning cloning Evil leaders may want to clone themselves. Cloning plants can be useful for research on new plant species. There are moral Cloning can help objections to cloning save endangered human beings. animals..
What do you think is the writer’s point of view in this reading passage? Is it in favour of cloning or against it? I think the writer is impartial because he / she does not state any personal opinion about cloning.
Do you know about: The procedure works of a sheep?
克 隆 羊 诞 生 图 示
“多利”的诞生有什么重大的意义和影响? 多利”的诞生有什么重大的意义和影响? 多利 “多利”的诞生标志着克隆研究取 多利” 多利 得新的进展和重大突破,而且这个结果 得新的进展和重大突破 而且这个结果 证明:动物体中执行特殊功能 动物体中执行特殊功能,具有特定 证明 动物体中执行特殊功能 具有特定 形态的所谓高度分化的细胞与受精卵 一样具有发育成完整个体的潜在能力。 一样具有发育成完整个体的潜在能力。 也就是说,动物细胞与植物细胞一样 动物细胞与植物细胞一样,也 也就是说 动物细胞与植物细胞一样 也 具有全能性. 具有全能性
Discussion Look at these pictures below at first.
Cloning people is a good thing or a bad thing? What is your opinion of cloning? Give a reason.
意大利狂人医生: 意大利狂人医生 安蒂诺里
冒死也要克隆人的 科学家:布瓦瑟利耶 科学家 布瓦瑟利耶
反对克隆人
  1.克隆技术现在还不成熟 克 克隆技术现在还不成熟,克 克隆技术现在还不成熟 隆人可能有很多先天性生理 缺陷。 缺陷。
  2.克隆人的身份难以认定 他 克隆人的身份难以认定,他 克隆人的身份难以认定 们与被克隆者之间的关系无 法纳入现有的伦理体系。 法纳入现有的伦理体系。

  3. 克隆技术有可能被滥用 成为恐怖 克隆技术有可能被滥用,成为恐怖 分子的工具。 分子的工具。
  4. 从生物多样性上来说,大量基因结 从生物多样性上来说 大量基因结 构完全相同的克隆人,可能诱发新 构完全相同的克隆人 可能诱发新 型疾病的广泛传播,对人类的生存 型疾病的广泛传播 对人类的生存 不利。 不利。
支持克隆 人
  1. “不让我们克隆人 就是不让 不让我们克隆人,就是不让 不让我们克隆人 我们修正我们的错误,人类 我们修正我们的错误 人类 历史难道能够这样构造 吗?”?《纽约时报书评》 《纽约时报书评》
  2. “当然应该‘ 克隆’人,如果 当然应该‘ 当然应该 克隆’ 如果 谁第一个掌握了这个技术, 谁第一个掌握了这个技术 他就是我真正的、 他就是我真正的、也是唯一 的竞争对手。 比尔?盖 的竞争对手 。 ” ?比尔 盖 比尔 茨

  3. “克隆人绝对是科学上了不起的进步 克隆人绝对是科学上了不起的进步, 克隆人绝对是科学上了不起的进步 克隆技术必将创造21世纪的辉 克隆技术必将创造 世纪的辉 煌。” ?麻省理工学院生命工程教授 麻省理工学院生命工程教授 约翰?布洛克 约翰 布洛克
  4. “人体商业化是人类经济活动中无与伦 人体商业化是人类经济活动中无与伦 比的成就,毫无疑问 毫无疑问,克隆技术的出现将 比的成就 毫无疑问 克隆技术的出现将 为世人创造一个最为广泛和深远的市 英国《 场。” ?英国《经济学家》杂志。 英国 经济学家》杂志。
 

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