选修8Unit2 Cloning

4. Religious leaders raised _______ questions about moral human cloning.
5.What can we learn from the passage ?
As one coin has two sides, everything has _____ two bad aspects(方面). Cloning has both ______and _____ good aspects ._______________, if cloning is used in a On the one hand
Para 1 Para 2
① Dolly’s problem and death
②What is cloning? ③ Two major uses of cloning
④ Arguments brought by Dolly
Para 3
Para4 Para5
⑤The procedure for human clonin
A stem （茎） Take cuttings from growing plants to make new ones.
They are identical in sex and appearance, who are produced from the same original egg.
First reading
1. What is cloning? It is a way of making an exact
copy of another animal or plant.
2.What’s the style of the passage ?
A.narrative (记叙文)
B.argumentative(议论文)
Let’s make a discussion about whether cloning should be allowed in China ? Give your reasons.
Possible sentence patterns:
(1)People’s views vary from person to person.
Dog Snuppy was created by Korean
and American
scientists
Dolly the sheep
different
from
loned She was c______while the others were born naturally. It is the exact copy of another sheep and the first cloned mammal.
(2)… hold the view that…./…in favor of …
(3)…object to the view that…/ are against…
(4)I can’t agree with …because…
Consolidation
The passage mainly tells us what
⑥ The effect of Dolly
Second reading
1. What are the two major uses of cloning ?
The first use is to produce commercial quantities of plants ; the second one is to research on new plant species and medical research on animals.
4.What are the advantages and disadvantages of cloning ?
advantages
commercial 1.Cloning plants can produce ___________ ____________ quantities of plants . 2. Cloning plants can be useful for research on new _____ plant species. 3. Medical cloning could produce ______ for serious cures illnesses.
we should treat things in ng
张霞 临朐实验中学
c______ is , the a_________ raised loning rguments
by Dolly the sheep and scientists are not
sure about its f_________. uture
教师寄语
One coin has two sides and
3.Give a right order of cloning Dolly ‘s procedure
①The cell divides and grows into an embryo. ②The lamb is the clone of the donated cell from Sheep B. ③ A nucleus is taken out of Sheep B’s somatic cell . ④The embryo is put into female Sheep C. ⑤The egg cell from Sheep A and the nucleus from
F
2. What is the writer’s attitude toward cloning in this passage?
A. The writer is against cloning. B. The writer is in favor of cloning. C. The writer does not state any personal opinion about cloning.
2. Is cloning plants the same with cloning animals ?
A. Yes , they are the same with each other. B. No, cloning plants is straightforward but cloning animals is more complicated.
Period 1 Warming up& Reading
Look at the pictures and discuss which ones are natural clones and which
ones are man-made clones .
The plant produces its own runners.
Sheep B are joined using electricity.
⑥ The egg cell from Sheep A is removed a nucleus.
⑥ ③ ⑤ ① ④ ② The order:____ ____ ____ _____ ____ ___
Third reading
1.True or False questions.
①Dolly the sheep was the first successful clone of a mammal.
T
②Some countries like China didn’t stop
human cloning research. F ③a cloned animal usually dies earlier than the original one. T ④Evil leaders can clone themselves to abtain their ambitions.
disadvantages
1. Animal clones may develop the i________ of llnesses older animals. 2. Animal clones may _____younger than the die donor animals. 3. Evil leaders may want to clone themselves to ______ attain their ambitions.
correct way ,it can bring lots of convenience to us.
________________, if cloning is used in an evil way ,it On the other hand can cause much trouble. __________, we should use Therefore cloning in a correct way.
C.explanatory(说明文)
3.Can you put the topic sentences into paragraphs that they belong to? (Attention: one of them belongs to nowhere.) ① Dolly’s problem and death ②What is cloning? ③Two major uses of cloning ④ Arguments brought by Dolly ⑤The procedure for human cloning ⑥ The effect of Dolly
3. What’s the affect of cloning ?
On the one hand ,it opened everybody’s possibility eyes to the ____________of using cloning to serious illnesses cure_______________and even produce human beings _____________; On the other hand , Its objections appearance raised a storm of ___________ and had a great impact on the _______ and media imagination public__________.