Unit2 Cloning导学案

Unit 2《Cloning》
Reading: CLONING: WHERE IS IT LEADING US? 导学案Step1. Lead-in
①What is cloning?
_____________________________________________________________________ ②Do you want to be cloned or not? Why?
____________________________________________________________________ StepⅡ.Reading:
Task1. Skim the passage and get the main idea of each paragraph.
Para 1:______________________________________________________________ Parta2:_____________________________________________________________ Parta3:_____________________________________________________________ Parta4: _____________________________________________________________ Para5:_______________________________________________________________ Task2. Detailed reading.
Paragraph1
True or false:
1. Cloning is a new topic.
2. When a gardener takes cuttings from growing plants to make new ones, we say the new ones are natural cloning.
3. Cloning happens both in plants and in animals.
Paragraph2
1. The word “straightforward” means ______.
A. uncomplicated
B. honest
C. frank
D. difficult
2.The cloning of Dolly the sheep succeeded because_____.
A. its easier to clone a sheep than other animals
B. the scientists were determined and worked hard with patience
C. the scientists were rewarded and got lots of money
D. many other attempts to clone mammals failed
3. The lamb is the clone of the cell from sheep B 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
Paragraph3
At first, the fact that Dolly seemed to developed ___________ was __________. Then, came the disturbing news that Dolly became____________.
Altogether Dolly lived__________________, half the length of the life of _________________.
Paragraph4
1. On the other hand, Dolly’s appearance__________________________and ____________________the media and public imagination.
2. The word “controversial” in paragraph 4 probably means____________.
A. complicated
B. arguable
C. important
Paragraph5
Character Their own reaction
Evil leader:
Religious leaders:
Government: Some countries_______________________________________ Other countries______________________________________. Task3. Further comprehension
The writer’s attitude towards cloning
A.Objective (be fair)
B.Negative (be against it)
C Positive (be in favor of it)
Because_____________________________________________________
Step III Retelling the text
Cloning is a way of _______ an exact copy of another animal or plant. Cloning has two ______ uses. Firstly, gardeners use it to produce plants. Secondly, it is ________ for medical research on animals. Cloning plants is straightforward but the cloning of animals is more__________. The procedure is difficult to _________. In 1996, scientists succeeded in _______Dolly the sheep. Then came the disturbing news that Dolly was ill. __________ Dolly lived for six years and a half, Dolly’s appearance raised a storm of _________. Government became nervous and many _________ research into human cloning. Scientists still _______ whether cloning will help or harm us and where it is leading us.
StepⅣ. Homework
1. Read the text fluently.
2. Discuss the topic "Is cloning a good thing or a bad thing for us ?" Then, write
a passage titled My opinions about cloning .
You can use the following words and phrases.
Firstly, secondly, thirdly, ……
On the one hand, on the other hand。