Unit 2

Cloning:

Where Is It Leading Us?

What is the writing style?A. Expositive( 说明文 ) B. Descriptive （记叙文）C. Argumentative （议论文）

Read the passage quickly to find the main idea of each paragraph.

Skimming

___.Cloning has two major uses and successful clone.

___. (definition) Cloning is a way of making an exact copy of another animal and plant

___. The effect of Dolly.___.It is forbidden to clone human beings.___.The problems of Dolly.

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3

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Definition

2 major uses of cloning

Cloning procedureThe first

successful animal clone

It is a way of __________________ of another animal and plant.1)to produce ___________quantities quantities of plants .of plants . 2)It is valuable for research on new ______________and medical research on ________. Cloning plants ______________while cloning of animals is ___________The cloning of_______________, a _____________ in cloning tech.

making an exact copy

commercial

straightforward

breakthrough

plants speciesanimals

Dolly the sheepcomplicated

The problems of Dolly the sheep

The effect of Dolly the sheep

• Encouraging news : It seemed to develop ________ and produced ______in a _______way.• Disturbing news:It lived for ____ years, half the length of the life of the _______ sheep.• Its appearance raised a storm of ________and had a great impact on the _____ and public___________.• It opened everybody’s eyes to the possibility of using cloning to cure _______________and even produce _____________.

objections

human beings

normallynatural

6original

imagination

serious illnesses

media

a lamb

Arguments on cloning

• Evil leaders hope to clone ___________.

• Religious leaders raised ________ questions.

• Many governments _______ research into human cloning.

• Some countries continued to ___________evidence of the abundant medical aid.

moral

forbade

themselves

accumulate

Scanning to get

detail information

1. Dolly the sheep_____.A. looked exactly like the sheep that

provides the egg cellB. was the exact copy of the sheep that

provides the nucleusC. looked like the sheep that gave birth to itD. had the characteristics of all three sheep

scanning

2. The cloning of Dolly the sheep succeeded because____. A. it’s easier to clone a sheep than other animals B. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failed

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 dies earlier 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. 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

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

We can conclude _______A. Cloning is good for us.

B. Cloning has two aspects.

C. If cloning is used in a correct way it can bring many convenience to us.

D. If cloning is used in an evil way it can cause much trouble.

We should use cloning in a wise way !

As a coin has two sides, everything has

two aspects. On one hand, if cloning is

used in a correct way it can bring many

convenience to us. On the other hand, if

cloning is used in an evil way it can

cause much trouble. Therefore, we

should use cloning in a correct way.

exact twin

commercial straightforward

undertake breakthrough

procedure carrier

adj. 精确的；准确的n. 双胞胎之一adj. 成对的； 成双的adj. 商业的；贸易的adj. 简单的；坦率的vt. 着手；从事；承担n. 突破n. 程序；步骤；手续n. 携带者；搬运工； 运输工具

Words preview

castaltogether arbitrary

correction object

objection medium

the media obtain

vt. 扔；投；掷adv. 总共；完全地adj. 任意的 n. 改正；纠正； 修正vi. 反对；不赞成n. 不赞成；反对；异

议n. 媒介；手段；工具 大众传播媒体vt. 获得；赢得

Words preview

attainmoral

conservative forbid

accumulate

vt. 获得；到达adj. 道德 ( 上 ) 的；伦理

的adj. 保守的；守旧的vt. 禁止；不准 vt. 积累；聚积

Words preview

pay off

cast downobject to

in favour of

得到好结果；取得成功；偿清沮丧；不愉快反对赞成；支持

Expressions preview