QQ403096966 E-mail:2ewen@1
  63.com
Unit 10
Text A
Listening
First Listening
Before listening to the tape, have a quick look at the following words and phrases.
overseas
向海外
fantasy
幻想
cell
细胞
gene
基因
identical twins
同卵双生胎
Second Listening
Listen to the tape again. Then, choose the best answer to each of the following questions.

  1. The main purpose of this listening passage is .
A) to give information about a new scientific discovery
B) to discuss political problems in the United States
C) to argue for cloning
D) to argue against cloning

  2. Which of the following is the best definition of the verb "to clone"?
A) to be re-elected president for a second term
B) to photocopy an entire book
C) to make a genetic copy of an animal or a person
D) to transplant an organ from an animal to a human

  3. According to the listening, cloning humans is .
A) not yet possible
B) highly controversial
C) illegal in the United States
D) both A) and B)

  4. The listening concludes that most questions about cloning .
A) will be decided by the courts
B) are up to each individual concerned
C) have not yet been answered
D) do not really matter
Cloning:
good Science or Baaaad Jdea
Chana Freimans Stiefel
Just before President Clinton heads to the hospital for knee surgery, he asks another Bill Clinton to meet Russian President Boris Yeltsin at an overseas meeting. Meanwhile, a third Bill Clinton is out playing golf, while a fourth is helping daughter Chelsea with a science project.
Sound far-fetched? That day may come. Scientists in Scotland recently announced that, for the first time, they have cloned an exact copy of an adult sheep. The cloned baby lamb, named Dolly, has the exact same genes as the adult sheep from which she was cloned. In other words, the two are identical twins; only Dolly is six years younger. The goal of embryologist lan Wilmut, the lead scientist, is to develop a way to raise identical sheep that produce medications for humans.
A week after Wilmut's announcement, scientists in Oregon disclosed that they had used a different technique to clone monkeys, close cousins of humans. Faster than you can say "Frankenstein," these accomplishments triggered a worldwide debate: Should scientists be allowed to clone animals? Will humans be next? Is cloning unethical and dangerous?or is it a valuable research tool?
All attempts at cloning were largely unsuccessful until 19
  84. That's when a scientist in Denmark separated cells from a sheep's embryo. An embryo is an early stage of development in which cells are busy dividing and "transforming" into specialized cells like skin, eye, or muscle cells.
Unlike a skin cell, an embryo is on its way to becoming a complete living thing. The Danish scientist combined an embryo cell with an egg cell from another sheep. He implanted the fused cell - then a newly growing embryo - into a grown female sheep. To much surprise, the embryo grew into a baby lamb. Since then, other scientists have used embryos to clone cattle, pigs, goats, rabbits - and, now, even monkeys.
So what makes Wilmut's sheep unique? Instead of using early-stage embryo cells, Wilmut used cells from the udder of an adult sheep. In theory, that's like using one of your skin cells to clone a new you!
Wilmut knew that each cell of the body contains a full set of genetic instructions?a blueprint to grow a complete individual. (The only exceptions are egg and sperm cells, each of which contains half the genes to grow a new individual.) Once cells have specialized, on their way to becoming skin or eye or udder cells, most of the genetic instructions to make a full being are turned off. Until now, scientists believed that specialized cells could not be used to form a complete organism.
Wilmut proved them wrong. He found a way to "reprogram" an udder cell and make it grow into a new cloned lamb. An amazing fact: Dolly has no biological father.
Wilmut's success didn't come easily. He has been studying reproductive science for more than two decades. Last year, he used embryos to successfully clone two sheep. Then he forged ahead to clone an adult sheep. But, of 277 udder cells he fused with egg cells, only 30 began to develop into embryos. He implanted 29 of those into female sheep. Only one adult gave birth to a lamb.
Other scientists have jumped in to repeat Wilmut's experiment with other animals, including cows. And that's what has scientists, animal-rights activists, politicians?even President Clinton ? up in arms. How far, they wonder, will cloning go?
Wilmut maintains that cloning animals has tremendous potential for helping people. Cloned sheep, he says, could be used as living drug factories. Scientists could "engineer" sheep that produce drugs in their milk. And by altering the proteins on the surfaces of animal organs to make them more like human organs, scientists believe they may be able to create a plentiful source of organ donors for people.
Why not clone humans as organ donors? Theoretically, Wilmut says, there is no reason his techniques couldn't someday be used to clone people. Think about the possibilities: a whole team of Michael Jordans, a scientific panel of Albert Einsteins, a movie starring and co-starring Brad Pitt.
On a more serious note, some fertility specialists argue that couples who have difficulty conceiving a baby could make copies of themselves. And parents whose child has a fatal disease like cancer might be able to clone the child, creating a twin who is an exact match for bone-marrow donation.
But even lan Wilmut draws the line at cloning humans. "All of us would find that offensive," he says. Several countries, including Britain, Denmark, Germany, and Australia, have outlawed all scientific work on cloning humans. The U.S. has no such law, but President Clinton has set up a panel of scientists and ethicists to study the issue. In the meantime, Clinton has imposed a ban on using Federal money to clone humans.
Humans are more than the sum of their genes, argues Mark Hanson, an ethicist at an ethics research institute in Briarcliff Manor, New York. Though they look exactly the same, clones are not necessarily carbon copies. The younger twin might grow up with different influences?say, unusual friends or special teachers. A cloned Albert Einstein might flunk physics. A cloned Madonna might sing off-key.
Say you were cloned. Would your twin live a shorter life because he or she started out with teenage genes? Scientists aren't sure. And how could you prevent someone from taking a sample of your hair and making a clone of you? Again, no solutions.
Some opponents of cloning also object to the use of animals as research tools. "Next, they'll be cloning minks and foxes to make more fur coats," says Cleveland Amory, president and founder of the Fund for Animals, an animal rights group.
What do you think? Should scientists be allowed to clone animals? How about humans?
(969 words)
New Words
cloning
n. 克隆,无性繁殖
surgery
n. 手术;外科
overseas
a. existing somewhere across the sea; foreign (在)海外的;外国的
ad. to, at, or in somewhere across the sea 向海外;在海外
meanwhile
ad. during the same period of time 同时
golf
n. 高尔夫球
far-fetched
a. improbable; not naturally connected 不大可能的;牵强的
lamb
n. a young sheep; the meat of a young sheep 羔羊;羔羊肉
gene
n. 基因
identical
a.
  1. (with, to) exactly alike 一模一样的a.

  2. the same 同一的

  3. 同卵的
twin
n. 孪生儿之一;[复数] 双胞胎
a. 孪生的;成双的
identical twins
[复数] 同卵双生胎;全等双生胎
embryologist
n. 胚胎学家
*medication
n.
  1. medicine used to cure illness 药物

  2. 药物治疗
*disclose
vt.
  1. make known 透露;使公开

  2. show by uncovering 使显露
*clone
vt. 克隆,(无性繁殖)复制
accomplishment
n. a remarkable achievement 成就;造诣
*trigger
vt. (off) start (a chain of events) 触发;激起
n. 板机;引爆器
unethical
a. morally wrong 不道德的
attempt
n. an effort made to do sth. 企图,尝试
vt. make an effort at; try 试图做
cell
n. 细胞
embryo
n. 胚胎
transform
vt. change completely in form, appearance or nature 彻底改变;将…转化
specialized, -ised
a.
  1. fit for one particular purpose 专门的

  2. 专化的;特化的
specialize, -ise
v.
  1. 专化,特化

  2.(in)专攻;专门研究
muscle
n. 肌肉
implant
vt. (in, into) fix deeply in the body or mind 植入;灌输
fuse
vt.
  1. cause to melt in great heat 熔化

  2. cause to join by melting 熔合
female
a. 女性的;雌的
n. 女子;雌性动物
rabbit
n. 野兔;兔肉
udder
n. (母牛、母山羊的)乳房;乳腺
contain
vt. hold, have within itself 包含,容纳
*genetica. 遗传的;基因的
blueprint
n. a photographic copy in white or blue paper 蓝图;计划
exception
n. 例外
sperm
n. 精液;精子
organism
n.
  1. a living being 生物,有机体

  2. a whole made of special parts 有机组织
reprogram
vt. l. 改编…的编码指令序列

  2. 为…重新编程
reproductive
a. concerned with producing young or copying 生殖的;复制的
*forge
vi. (ahead) move steadily and purposely forward 稳步前进
activist
n. a person who takes or supports vigorous action, esp. for a political cause 激进分子,积极分子
tremendous
a. very great in size, amount or degree 巨大的,极大的
alter
v. (cause to) become different 改变,(使)变样
protein
n. 蛋白质
organ
n.
  1. a part of the body with a particular function 器官n.

  2. 风琴;管风琴
plentiful
a. existing in large amounts or numbers 充足的,丰富的
donor
n. l.(组织、器官等的)供体,供者

  2. a person who gives or presents 赠送人;捐赠者
theoretically
ad. according to theory 理论上
panel
n.
  1. a small group of people chosen to do sth. 专门小组

  2. 镶板;嵌板
co-star
vt. 使联袂主演
fertility
n. 繁殖力;肥沃
specialist
n. expert 专家
*conceive
vt.
  1. become pregnant (with a child) 怀(孕);受(孕)

  2. think of, imagine 构想;设想
fatal
a.
  1. causing death 致命的

  2. very dangerous and unfortunate 毁灭性的;不幸的
marrow
n. 髓,骨髓
bonemarrow
n. 骨髓
donation
n. the act of donating or sth. donated 捐赠;捐赠物
offensive
a. causing offense; unpleasant 冒犯的;使人难受的
outlaw
vt. declare unlawful 宣布…为非法
n. criminal 歹徒;逃犯
ethicist
n. 伦理学家
meantime
n. the time between two events 其间,其时
impose
vt. (on, upon)
  1. force the acceptance of 把…强加于

  2. establish (an additional payment) officially 征(税)
ban
n. (on) an order to forbid sth. 禁令;禁止
vt. forbid by law 禁止;取缔
federal
a. l. [F-](美国)联邦政府的

  2. 联盟的;联邦的
*ethics
n. 伦理学;道德学
flunk
vt. fail (an examination or course) 通不过(考试等)
off-key
a. 走调的,不和谐的
opponent
n. a person who acts against sb. or sth. or who takes the opposite side 反对者;对手;敌手
mink
n. 水貂;水貂毛皮
Phrases and Expressions
for the first time
第一次,破天荒
in other words
expressing the same meaning in another way 换句话说
on one's way to
moving towards 接近,将要
to much surprise
令人大为惊异的是
in theory
理论上
give birth to
produce 产(仔);生(孩子)
jump in
join in with vigor or eagerness (踊跃或热切地)加入
up in arms
angry (about sth.) and protesting strongly 极力反对
draw the line at
refuse to do or accept 拒绝做;拒绝接受
set up
found or establish 设立,建立
in the meantime
in the period of time between two events 在此期间,与此同时
start out
begin 开始
object to
be against 反对
Proper Names
Chana Freiman Stiefel
查纳?弗赖曼?施蒂费尔(人名)
Bill Clinton
比尔?克林顿(1946 ?,美国第四十二任总统)
Boris Yeltsin
鲍里斯?叶利钦(1931 ?,俄罗斯联邦第一任总统)
Chelsea
切尔西(女子名)
Scotland
苏格兰(英国的一部分,在大不列颠岛北部)
Dolly
多利(世界上第一只克隆羊)
lan Wilmut
伊恩?威尔莫特(人名)
Oregon
俄勒冈州(美国州名)
Frankenstein
弗兰肯斯坦(英国女作家 Mary W.Shelley 所著同名小说中的主角,一个创造怪物而自己被它毁灭的医学研究者)
Denmark
丹麦(北欧国家)
Danish
丹麦的
Brad Pitt
布拉德?皮特(美国影星)
Mark Hanson
马克?汉森(人名)
Briarcliff Manor
布里尔克利夫?马纳(地名)
Cleveland Amory
克利夫兰?艾默里(人名)
the Fund for Animals
动物基金会
 

相关内容

英语学习_21世纪大学英语读写教程(第一册)课后翻译答案_必备

   弃我去者, 弃我去者,昨日之日不可留 乱我心者, 乱我心者,今日之日多烦忧 21 世纪大学英语读写教程(第一册)课后翻译答案 Unit 1 l 汤姆是个非常好奇的男孩,他不仅对“是什么”感兴趣,而且也对“为什么”和 “怎么会”感兴趣。 As a very curious boy, Tom is interested not only in whats but also in whys and hows. l 据史密斯教授说,幸福就是你能充分利用你所有的一切。 Happiness, accor ...

21世纪大学英语教程第一册10

   QQ403096966 E-mail:2ewen@163.com Unit 10 Text A Listening First Listening Before listening to the tape, have a quick look at the following words and phrases. overseas 向海外 fantasy 幻想 cell 细胞 gene 基因 identical twins 同卵双生胎 Second Listening Listen to t ...

21世纪大学英语第一册第一单元

   21 世纪大学英语第一册第一单元: 世纪大学英语第一册第一单元: 一、教学目标 1. 语言知识: words and phrases:make the most of put in get one’s hands on cut down on write up stick to lead to put down approach 2. 语言技能: Listening and speaking: Learn different ways of asking for, giving and ac ...

21世纪大学英语第一册课后翻译

   21世纪大学英语读写教程(第一册)课后翻译答案 Unit 1 l 汤姆是个非常好奇的男孩,他不仅对“是什么”感兴趣,而且也对“为什么”和“怎么会”感兴趣。 As a very curious boy, Tom is interested not only in whats but also in whys and hows. 2 据史密斯教授说,幸福就是你能充分利用你所有的一切。 Happiness, according to Prof. Smith, is the ability ...

21世纪大学英语读写教程第一册课文翻译

   Unit1 TextA 优等生的奥秘 埃德温?基斯特 莎莉?瓦伦丁?基斯特   现在是剑桥大学理科一年级学生的阿历克斯,曾在曼彻斯特的中学校队里踢足球,还导演过学校的戏剧演出??但他中学毕业时得了五个A 。在布里斯托尔大学攻读英语的阿曼达在中学里参加过戏剧演出,还经常打网球,但她仍然得到了四个A 。   像他们这样的优等生是如何做到这一点的呢?脑子好使并不是唯一的答案。最有天赋的学生未必在考试中取得最好的成绩。懂得如何充分利用自己的才能要重要得多。   学习刻苦也不能说明全部问题。在这些成绩优 ...

21世纪大学英语读写教程第一册课文翻译

   Unit1 TextA 优等生的奥秘 埃德温?基斯特 莎莉?瓦伦丁?基斯特 现在是剑桥大学理科一年级学生的阿历克斯,曾在曼彻斯特的中学校队里踢足球,还导 演过学校的戏剧演出??但他中学毕业时得了五个 A 。 在布里斯托尔大学攻读英语的阿曼达 在中学里参加过戏剧演出,还经常打网球,但她仍然得到了四个 A 。 像他们这样的优等生是如何做到这一点的呢?脑子好使并不是唯一的答案。最有天赋的 学生未必在考试中取得最好的成绩。懂得如何充分利用自己的才能要重要得多。 学习刻苦也不能说明全部问题。在这些成绩 ...

21世纪大学英语读写教程(第一册)课后习题答案

   Unit 1 Text A Exercise V 1. solutions 2. ignore 3. persuade 4. assign 5. deadline 6. approach 7. stuck 8. essentials 9. managed 10. necessarily 11. retained 12. due, draft VI 1. put in 2. make the most of 3. put down 4. lead to 5. get her hands on 6 ...

21世纪大学英语读写教程第一册translation

   Unit1 Text A translation 1,:汤姆是一个十分好奇的男孩,他不仅对“是什么”感兴趣。而且也对“为什么”和“怎么样”感兴趣。 Tom, a very curious boy, is interested not only in whats but also in whys and hows. 2:据史密斯教授说,幸福就是你能充分利用的一切。 According to Professor Smith, happiness is the ability to make th ...

英语学习_新视野大学英语视听说教程第一册听力练习录音文本和答案(第二版)_必备

   整理, 本材料由贸贸论坛 www.nbutrade.cn 整理,原材料来源于互联网 弃我去者, 弃我去者,昨日之日不可留 乱我心者, 乱我心者,今日之日多烦忧 新视野大学英语视听说教程第一册 听力录音文本和答案 UNIT 1 II. Listening Skills Listening for Names 1. Doris: Good morning. Can I help you? David: Yes. I need to change one of my courses. Doris: ...

0XZJL往事追忆_新视野大学英语视听说教程第一册听力练习录音文本和答案(第二版)

   灿烂的语言,只能点缀感情,如果我沉默,代表我真的喜欢你 26、自由代表的是内心永久的孤独。 、自由代表的是内心永久的孤独。 27、现实太假,还是自己太傻? 、现实太假,还是自己太傻? 28、一切因为寂寞,才开始了暧昧。 、一切因为寂寞,才开始了暧昧。 29、生活的真正意义是:生下来,活下去。 、生活的真正意义是: 生下来,活下去。 30、年龄不是差距,身高不是距离。 、年龄不是差距,身高不是距离。 31、人生是一张单程车票,没有后退,没有返回! 、人生是一张单程车票,没有后退,没有返回! 3 ...

热门内容

2011年甘肃省部分普通高中高三第一次联合考试英语

   2011 年甘肃省部分普通高中高三第一次联合考试 英语试题 命题学校 酒钢三中 英语知识运用(共三节, 第一部分 英语知识运用(共三节,满分 50 分) 第一节 语音知识(共 5 小题;每小题 1 分,满分 5 分) 从 A、B、C、D 四个选项中,找出其划线部分与所给单词的划线部分读音相同的选项, 并在答题卡上将该项涂黑。 例:have A. gave B. save C. hat D. made 答案是 C。 1. through 2. umbrella 3. noise 4. adva ...

新概念英语最最经典的,最实用的教案,知识点!吼吼必看哦! (45)

   Lesson Plan Place: 枫小 Name Cathy Grade NCE1 Times the 35th I Lesson type: New Lesson II Contents & Purposes: 1. Warming up: Check reciting: lesson 101 2. New lesson: Lesson 102 103 104 3. Do exercises: Listening and Written exercises III Key st ...

单片机英语

   在单片机的学习过程中总要接触很多的英文缩写、专有名词等,对于初学的人来说无论在理解还是记忆上都会有一些困难。这里把一些频率较高的词和英文缩写总结如下,其中有一部分把英文缩写的有原文也列出,便于有一些英语基础的单片机初学者联想记忆,亦知其缩写然知其所以缩写然。 中文名称 ; 英文名称; ;简记术语 单片机; Single Chip Micocomputer or MicoControler Unit ; SCM or MCU 在 ...

新人教版初一英语上册_期末复习教案

   西苑中学 七(1)班 万远鹏 七年级英语( 七年级英语(上)复习要点 英语 1 认物(Unit 4) What is this/that? It’s a/an…. What are these/those? They are…. 2 确认所属(Unit 6;Unit 14) Is this/that your book? 单 =Is this/that book yours? Yes, it is/No, it isn’t Are these/those your books? 复 Are ...

05年(上)自考英语(二)试卷及名师评析

   05 年(上)自考英语(二)试卷及名师评析 (考试时间:4 月 17 日上午 8:3011:00) 本试卷分为两部分,满分 100 分;考试时间为 150 分钟. 第一部分为选择题,共 50 分.应考者必须在"答题卡"上按要求填涂,不能答在试卷上. 第二部分为非选择题,共 50 分.应考者必须将答案写在"答题纸"的相应位置上,否则不计分. PART ONE (50 POINTS) Ⅰ.Vocabulary and Structure(10 points ...