人教版（新课程标准） 选修8 Unit 2 Cloning Reading 阅读课件（33张PPT）

(共33张PPT)
Book 8 Unit 2 Cloning
Period 1 Warming up& Reading
Cloning: Where is it leading us
01
PART ONE
Warming-up
Step 1 Words Review
differ
exact
identical
commercial
complicated
undertake
pay off
cast down
objection
conservative
vi.不同
adj.精确的
adj.同一的；一模一样的
adj.商业的；贸易的
adj.复杂的；
vt.着手；从事；承担
得到好结果；取得成功；偿清
沮丧；不愉快
n. 不赞成；反对；异议
adj.保守的；守旧的
nucleus
somatic
embryo
carrier
impact
attain
moral
forbid
accumulate
in favour of
n.原子核；中心
adj.躯体的；肉体的；细胞体的
n.胚胎；萌牙时期
n. 携带者；搬运工；运输工具
n.撞击；冲击；巨大的影响
vt.获得；到达
adj.道德的；伦理的
vt.禁止；不准
vt.积累；聚保
赞成；支持
Words Review
Step 2 Enjoy a video of clone
What is cloning
Cloning is the process of making an identical________ of a living________or plant .
Step 3Clone Quiz
copy
animal
A clone animal or plant are produced naturally or created by people.
How many kinds of cloning are there
Step 3 Clone Quiz
is produced through human intervention(介入).
Man-made clone
_________ clone
occurs in a natural form of cloning without human help.
Natural
Step 3 Clone Quiz
Look at the four pictures and tell:
which ones are natural clones
which ones are man-made clones.
Dolly the sheep
man-made clones
Step 3 Clone Quiz
natural clones
A strawberry plant
Step 3 Clone Quiz
Growing new plants
Gardeners take cuttings from growing plants to make new ones.
man-made clones
Step 3 Clone Quiz
They are born naturally and identical in sex and appearance.
natural clones
Twins
Step 3 Clone Quiz
02
PART ONE
Pre-reading
Cloning: where is it leading us
What is cloning
a cloning sheep procedure
the future of cloning
...
Step 1 prediction
Guess what the passage maybe tell us
03
PART ONE
While-reading
The text is mainly about the__________ of animal cloning and the life of Dolly the sheep, as well as the________why cloning is still controversial(有争议的).
procedure
Read the passage quickly and complete its main idea.
reasons
Match the main idea of each paragraph.
the first sentence and key words!
A.Two major uses and the procedure
of cloning.
B.The problems of Dolly.
C.The effect of Dolly.
D.People's attitude towards cloning
E.The definition（定义）of cloning.
Para 1.
Para 2.
Para 3.
Para 4.
Para 5.
Cloning is a way of making an exact copy of another animal and plant.
Q1:What is cloning
Task 1：Read paragraphs 1-2 carefully and answer the questions
Q2:What are major uses of cloning
Firstly, …commercial quantities of plants.
Secondly, …medical research on animal.
Task 2：Look at the picture on the page11.
Choose the suitable words to finish the chart below.
Pair Work
An egg cell
The nucleus
The egg cell
A somatic cell
The nucleus is taken out of the somatic cell
The nucleus
They are joined
The cell divides and grows into an embryo
The carrier
Put into
The lamb is the clone of
Female sheep A
Female sheep B
Sheep B
Female sheep C
genes
Procedure of Cloning a Sheep
C. egg cell（暖细胞）
somatic
cell
A. egg cell without nucleus(无核卵细胞)
B. nucleus（细胞核）
E. jioned
F. divides and grows
D. put
G. carrier
1.____
2.____
3.____
They are 4. ___ using electricity.
The cell 5.____in to an embryo.
The embryo is 6.____into the 7.___.
C
A
B
E
F
D
G
Task 2
Group work
Task 3：read paragraph 3-4 to sum up the problems and effect of Dolly.
At first, it was encouraging that Dolly____________________________.
However, it was____________that Dolly become seriously.
Then, cloning became____________.
seemed develop normally
disturbing
controversial
Task 4: People’s attitute to cloning
Read para 5 and decide whether these statements are True or False.
1. People feared that Cloned Hitlers
would do harm to the world.
2. All governments forbade research into human beings .
3. Some countries will use cloning in a
wise way.
2. Some governments
T
T
F
04
PART ONE
Post-reading
the author does not state any personal opinion about cloning.
A. Objective (be fair)
B. Negative (be against it)
C. Positive (be in favor of it)
The writer's attitude towards cloning
Because________________________________________________________
Disadvantages of cloning Advantages of cloning
Discuss &Summary
4. Cloning can help save endangered animals.
1. Animal clones may develop the illnesses of older animals.
2. Animal clones may live
_______ than the original animals.
shorter
3. ______leaders may want
to clone themselves to attain their ambitions.
Evil
4. Religious leaders raised
.
moral questions
1. Use it to produce ___________quantities of plants.
commercial
2. Cloning plants can be valuable for research on________________
new plant species.
3. Cloning can be valuable for
_____________ on animals .
medical research
Are you in favour of cloning or against it and why
Group Discussion
What's your attitude
As a coin has two sides, everything has two aspects. ___________, if cloning is used in a correct way it can bring many convenience to us. ________________, if cloning is used in an evil way it can cause much trouble.
Conclusion
On one hand
On the other hand
Therefore, we should use cloning in a correct and wise way.
Homework
1. Write down your attitude to cloning
(≥80 words);
2. Read the passage again and mark out the useful expressions.
Thank you!
LOGO
3 development stages of clone：
①bacterial （细菌） cloning;
②animals cloning;
③DNA cloning;
the correct order：_____________
Step 2 Clone Quiz
①③②
Where was Dolly the sheep born
A. The USA
B. Germany
C. The UK
D. Autralia
Step 2 Clone Quiz
Where was the first cloned monkey born
A. The USA
B. China
C. The UK
D. Russia
Step 2 Clone Quiz
What are not clones identical(一样的) in
A. sex
B. appearance
C. character
D. age
Step 2 Clone Quiz