高中英语 Unit2《Cloning》课件-Warming up& Reading 新人教

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Period 1 Warming up& Reading

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What will you think of ?... Dolly

cure

gene

twins

the same

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The plant produces its own runners.

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A stem Take cuttings from growing plants to make new ones.

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They are identical in sex and appearance, who are produced from the same original egg.

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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.

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Its name is Andi, the first genetically modified monkey.

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Dog Snuppy was created by Korean and American scientists

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What is Cloning?

Cloning is a way of making an copy exact _____ of another animal or plant.

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What is the difference among them ?

clone

Natural clone Man-made clone

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Clone, also called reproduce asexually (无性生殖 /繁殖), is the creation of cells or whole animals using DNA from a single “parent”, without using the normal reproductive (有 性生殖) process. The clone has the exactly same DNA to the

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Prediction

What do you think the article is about by reading this headline?

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What is the main idea of the passage?The passage tells us that animal arguments cloning raised __________ and future scientists are not sure about its______. What is the writing style?A. Expositive(说明文 说明文) 说明文 B. Descriptive(记叙文) (记叙文) C. Argumentative(议论文) (议论文)

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Skimming2 ___.Cloninghas two major uses and successful clone.

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

___. The effect of Dolly. 4

5 ___. It is forbidden to clone human beings.___.The problems of Dolly. 3

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Definition It is a way of __________________ making an exact copy of another animal and plant. commercial quantities 1)to produce ___________quantities 2 major of plants . uses of 2)It is valuable for research on new plants species cloning ______________and medical animals research on ________. straightforward Cloning Cloning plants ______________while procedure cloning of animals is ___________ complicated The first The cloning of_______________, a Dolly the sheep breakthrough successful _____________ in cloning tech. animal clone

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True of false :1.Four female sheep participate in the cloning of a new sheep. F 2.Electricity is needed in the procedure. T 3.Sheep B provides a somatic cell for the clone. T 4.The lamb is the exact copy of sheep A. F