北师大版高中英语学案选择性必修第三册精品课件 UNIT 9 HUMAN BIOLOGY Section A TOPIC TALK LESSON 1 (2).ppt

;;;Inthenearfuture,geneticistshopetoapplythistechnologytotreatawiderangeofhealthproblems.Soonwemaybeabletousesuchtreatmentstorestore4ablindperson’svisionorgivesomeonewhowasborndeafanexcellentsenseofhearing.Ultimately5,thisnewtechnologymightevenmakeitpossibletopreventdiseasesfromeverdevelopingbycorrectingabnormalgenesearlyon.Genomeediting,servingasanewweaponinthefightagainstdiseases,willleadtoafundamentalchangeinourapproachtohealthcare.;Asthetechnologycontinuestodevelopatafastpace,however,questionsarise6abouthowtouseitappropriately.Shouldwerestrictouruseofthistechnologytothetreatmentandpreventionofdiseases?Shouldweprohibitgeneticistsfromusingittoenhancehealthybodies?...Wewillalsobeabletoselectspecificcharacteristicsforchildrenbeforetheyareborn,creatingwhatsomehavecalled“designerbabies”.However,isthisagoodthing?Whatconsequencesmightithave?Philosophers,geneticistsandgovernmentofficialshaveallstartedtowrestlewith7suchmoralissues.Wehavetofigureouthowtokeepthetechnologyfromrunningwild.

(节选自译林版新教材选二Unit3);【词汇积累】

1.playacriticalrole起关键作用

2.lifespann.(人或动物的)寿命;使用期

3.identifyvt.认出,识别;确认

4.restorevt.恢复(某种情况或感受);使复原

5.ultimatelyadv.最终,最后

6.arisev.产生,出现;起源(于)

7.wrestlewith全力对付;努力克服;;;第一步速读课文理清脉络

Task1Readforthemainidea.

What’sthethemeofthetext?

A.Thebenefitanddisadvantageofcloning.

B.Theclassificationanduseofcloning.

C.Thedevelopmentandfutureofcloning.

D.Thefeaturesandexamplesofcloning.;Task2Readthetextquicklyandmatchthemainideawitheachpart.

Para.1 A.artificialcloning:clonedmammals

Para.2 B.moralconcerns

Para.3 C.artificialcloning:clonedprimates

Para.4 D.theconclusion

Para.5 E.thesignificanceofthecloningofprimates

Para.6 F.thedefinitionandnaturalcloning;Task3Skimforthemainstructure;第二步精读课文领悟细节

Task4Readthetextca