英語選擇性必修 第三冊Unit 9 Human BiologyLesson 1 To Clone or Not to Clone?教課內(nèi)容ppt課件

這是一份英語選擇性必修 第三冊Unit 9 Human BiologyLesson 1 To Clone or Not to Clone?教課內(nèi)容ppt課件，共29頁。PPT課件主要包含了outline，Homework等內(nèi)容，歡迎下載使用。
Pre-reading
Pst-reading
Fast Reading
Language and Grammar
Intensive Reading
Clning can create identical genes.Clning can be used t edit genes.Clning can make an exact cpy f an animal.Scientists have brken lts f technical barriers when studying clning.We’ve clned several species, like sheep, cattle and dgs.Scientists want t prduce animal mdels that are helpful fr medical research.
What d yu knw abut clning?
What additinal infrmatin wuld yu like t knw?
When was the first clned animal created?Why are scientists s interested in clning?What achievements have we made in clning?What prblems are we facing nw?…
Fast Reading
definitin & natural clning
artificial clning: clned mammals
artificial clning: clned primates
the significance f clning f primates
mral cncerns
Fast Reading: Match the headings with the paragraphs
Intensive Reading
T clne r nt t clne
Draw a structural map t shw hw the paragraphs are rganised.
T Clne r Nt t Clne?
Read the first fur paragraphs t answer the fllwing questins.
1. What was the first clned mammal? What happened t her?2. Hw has the science f clning develped since the first clned mammal?3. What develpment in clning was annunced in 2018? What was special abut it?4. Fr hw lng did Dr. Sun Qiang’s team wrk? Why did they wrk s hard?5. Why was it significant t clne primates?
1. What was the first clned mammal? What happened t her?
It was a sheep named Dlly in 1996.At first, Dlly grew nrmally. But later she develped an illness that is mre nrmally fund in much lder animals. She lived fr six and a half years, nly half the life f the sheep frm which she was clned.
2. Hw has the science f clning develped since the first clned mammal?
After Dlly, scientists have clned mre than 20 mammal species, including camels, cattle, deer, dgs, gats, and mice.
3. What develpment in clning was annunced in 2018? What was special abut it?
In January 2018, Chinese scientists annunced the clning f tw lng-tailed mnkeys, Zhng Zhng and Hua Hua. They were the first-ever primates t have been clned! Clning primates is much harder and ding s with nn-reprductive cells was even mre cmplicated.
Zhng Zhng and Hua Hua
4. Fr hw lng did Dr. Sun Qiang’s team wrk? Why did they wrk s hard?
They wrked 24 hurs a day, 7 days a week fr mre than 5 years.They wanted t get animals with edited genes and prduce animal mdels that are helpful fr medical research and human health.
Dr. Sun Qiang and ne f his team members
5. Why was it significant t clne primates?
It might lead t cures fr varius diseases.It may ffer clues n hw t prevent the aging prcess.It allws us t have the ptential t raise a large number f mnkeys with identical genes in a shrt amunt f time.It may allw us t change their genes t suit research needs.It culd help save research time.
It culd reduce the number f animals required fr testing.It culd prduce mre accurate results.It culd lead t mre effective treatments.
Read paragraphs 5 and 6. Finish the clumns.
prevent aging, save research time, reduce the number f animals being tested n, prducing mre accurate results, better treatments
clnes shuld be treated as bjects r individuals, clnes are inferir, sme rganisatins may abuse the technlgy
What des Einstein’s qute mean?
“Science is a pwerful instrument. Hw it is used, whether it is a blessing r a curse t mankind, depends n mankind and nt n the instrument. A knife is useful, but it can als kill.”
Science itself cannt be judged as gd r bad, becauseit can nly functin when it is used by humans. Humans need t be careful with the infrmatin they learn thrugh science and t remember t use science fr gd.
Natural clning has taken place fr generatins. An example f this is identical 1 _____. A sheep called Dlly was the first mammal t be clned 2 __________. Since Dlly, mre than 20 mammal 3 _______ have been clned including camels and gats. In 2018, China annunced that tw mnkeys had been clned. In cmparisn with ther species, scientists have had t wrk hard t break the technical 4 _______ t get primates with 5 _______ genes.
artificially
Cmplete the summary using the infrmatin in the article.
Scientists say that this majr breakthrugh ffers the 6 ________ t create mnkeys with 7 __________ genes t give mre 8 ________ research results and perhaps lead t 9 _____ fr varius diseases. Whilst scientists insist it is 10 ______ t cntinue research, thers raise 11 _____ cncerns and wrry that the technlgy might be 12 _______ by sme rganisatins.
1. Why d researchers insist that the science f clning shuld be further explred and advanced?
Pst-reading: Think and share
Researchers?insist?n?explring?clning?t?cntinue making?prgress in?curing?diseases?and?develping?treatments.
2. What is the writer’s attitude twards clning? Find evidence.
The writer feels that clning can be a helpful tl in medical research but that it can als becme dangerus. Evidence f this is in the writer’s use f Einstein’s qute.