Unit2 cloningwarming up and reading

What can you see in the picture?

They are identical in appearance and sex. The smaller one must be a man-made clone of the larger one.

Do you know how Dolly is different from other sheep? Dolly and the Father of Dolly – Ianwilmut( 伊恩.威尔 姆) In 1996, the famous sheep “Dolly” was cloned successfully

What is cloning ? Cloning is a way of making an

exact copy of another animaland plant.

Pre-reading

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.

Pre-readingWhat benefits can humans gain from cloning?Medical cloning can help cure serious illneses that ruin one’s quality of life . It can help infertile people have babies.

Pre-readingWhat problems may arise when humans are cloned?People may want to clone themselves so they can live forever. People may want to clone dead children.

People may want to clone their favourite pets

ListeningT or F questions 1 Clone can be from both natural clone and man-made clone . T 2 The sheep, named Kitty was the first successful clone of a mammal(哺乳动物).

F3 Only strawberries and cactus(仙人 掌) are natural clones . F

4 Since Dolley ,researcher have cloned a number of large and small animals including goats ,cows , mice , pigs, cats, rabbits and dogs . T5 A parent can clone a child who is dying of a terminal illness ( 不治之症).

F

skimmingWhat’s the text mainly about?It’s mainly about cloning arguments about animal cloning and concerns About its future.

Do you know about:The procedure works of a sheep?

克 隆 羊 诞 生 图 示

scanningPara1

Find out the answers in the text.

1.what’s cloning? 2. How do gardeners clone plants?

scanningPara2

Find out the answers in the text.

1.What two major uses do cloning have? 2. How many female sheep participate in the cloning of a new sheep?

3