人教版選修8unit2_cloning--_reading(公開課課件)

1、period 1 warming up& reading she was c_while the others were born naturally. it is the exact copy of another sheep and the first cloned mammal. loneddolly the sheep沒爹沒娘的多莉羊沒爹沒娘的多莉羊the worlds first cloned cat, kitten, namedcc. it was created using a cell taken from an adult cat, rainbow.dog snupp

2、y was created by korean and american scientistsits name is andi, the first genetically modified monkey.cloned rabbit克隆的熒光小豬克隆的熒光小豬(左左)和和正常小豬正常小豬(右右)克隆馬及其克隆馬及其“母親兼姐姐母親兼姐姐”a strawberry plantthe plant produces its own the plant produces its own runners.runners.not only animals but also plants can be cl

3、oneda stem take from growing plants to make new ones. they are identical in sex and appearance, who are produced from the same original egg. questions about cloning1. what is cloning?cloning is a way of making an exact copy of another animal or plant. they include natural and man-made clones.clone?

4、natural cloneman-made clonenatural clone is one that occurs from the “parent” in a natural form of cloning without human help. man-made clone is one produced through human intervention (介入介入) . in pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. ex

5、plain how they differ.warming upnatural clonesnatural clonescloned animals no. the first two are man-made clones, the rest two are natural clones.fast-readingtask 1 read the letter , then try to find the main idea of each paragraph.1.cloning is _ 2.cloning has _ uses.3.the _ of dolly.4. the _ of dol

6、ly.5. it is _ to clone human beings. a way of making an exact copy of another animal and blemstwo majoreffectforbidden1.the main idea of the text is_ a. animal cloning is very valuable and can benefit the world. b. animal cloning could be misused by bad people so it must be forbidden c. ani

7、mal cloning is well developed because dolly the sheep was born. d. animal cloning raised arguments and scientists are not sure about its future.choose the right answer according to the text.2. it can be inferred from the passage that a cloned animal_. a. usually lives as long as the original one b.

8、usually lives longer than the original one c. usually lives shorter than the original one d. is usually as healthy as the original one3. which statement is not true ? a. cloning is something that has been developed quite recently. b. twins that look exactly the same are originally from the same egg.

9、c. cloning is used by gardeners to make more money.d. animal cloning is much more difficult than plant cloning.4. 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 wer

10、e rewarded and got lots of money d. many other attempts to clone mammals failed5. the sheep that donated the somatic cell most probably lived _ years. a. 3 b. 6 c. 9 d. 12how is a clone produced?true of false :1.four female sheep participate in the cloning of a new sheep.2.electricity is needed in t

11、he procedure.3.sheep b provides a somatic cell for the clone.4.the lamb is the exact copy of sheep a.tftfadvantages of cloning1.medical cloning could produce cures for serious illnesses in humans.2. cloning plants can produce plants of similar quality for sale.3. cloning plants can be useful for res

12、earch on new plant species.4. cloning can help save endangered animals.problems or dangers of cloningv1. animal clones may develop the illnesses of older animals.2.2. animal clones may die animal clones may die younger than the donor animals.younger than the donor animals. 3. evil leaders may want t

13、o clone themselves. 4. there are moral objections to cloning human beings.a.expositive （說明性的）（說明性的） b. descriptive c. argumentative （議論性的）（議論性的） d. narrative2. the writers reaction towards cloning is_ a. positive b. negative c. neutralchallenge yourselfconsolidation clone is a way of making an exact

14、_ of another animal or plant. cloning have two _ uses. firstly, gardeners use it all the time to produce _quantities. secondly, it is valuable for research on new plant _and for medical research on animals. but through the _and death of dolly, cloning has a lot of problems. on the other hand, we kno

15、w cloning is controversial in some countries for _and _reasons. copymajorcommercialspeciesbirthmoralreligious cloning people is a good thing ,or a bad thing?克隆人是福音克隆人是福音, 還是惡兆？還是惡兆？thinkingoh! my god! i was cloned!as a coin has two sides, everything has two aspects. on the one hand, if the cloning is used in a correct way i