高中英语Unit2《Cloning》课件WarmingupReading新人教版选修81 3.docx

高中英语Unit2《Cloning》课件WarmingupReading新人教版选修81 3.docx

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高中英语Unit2《Cloning》课件WarmingupReading新人教版选修813

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Period1Warmingup&Reading

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Astrawberryplant

Theplantproducesitsownrunners.

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Astem

Takecuttingsfromgrowingplantstomakenewones.

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Theyareidenticalinsexandappearance,whoareproducedfromthesameoriginalegg.

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Dollythesheep

differentfrom

Shewasc______whiletheotherswerebornnaturally.Itistheexactcopyofanothersheepandthefirstclonedmammal.

loned

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ItsnameisAndi,thefirstgeneticallymodifiedmonkey.

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DogSnuppywascreatedbyKoreanandAmericanscientists

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Cloningisawayofmakinganexact_____ofanotheranimalorplant.

copy

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Clone,alsocalledreproduceasexually（无性生殖/繁殖）,isthecreationofcellsorwholeanimalsusingDNAfromasingle“parent”,withoutusingthenormalreproductive（有性生殖）process.TheclonehastheexactlysameDNAtotheparent.Itincludesnaturalandman-madeclone.

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Prediction

Whatdoyouthinkthearticleisaboutbyreadingthisheadline?

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Whatisthemainideaofthepassage?

Thepassagetellsusthatanimalcloningraised__________andscientistsarenotsureaboutits______.

arguments

future

●Whatisthewritingstyle?

●Expositive（说明文）

●Descriptive（记叙文）

●C.Argumentative（议论文）

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Skimming

___.Cloninghastwomajorusesandsuccessfulclone.

___.Cloningisawayofmakinganexact

copyofanotheranimalandplant（definition）

___.TheeffectofDolly.

___.Itisforbiddentoclonehumanbeings.

___.TheproblemsofDolly.

2

1

4

5

3

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makinganexactcopy

Definition

2majorusesofcloning

Cloningprocedure

Thefirstsuccessfulanimalclone

Itisawayof__________________ofanotheranimalandplant.

1）toproduce___________quantitiesofplants.2）Itisvaluableforresearchonnew______________andmedical

researchon________.Cloningplants______________whilecloningofanimalsis___________

Thecloningof_______________,a_____________incloningtech.

commercial

plantsspecies

animals

straightforward

complicated

Dollythesheep

breakthrough

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ProcedureofCloningaSheep

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Trueoffalse:

●Fourfemalesheepparticipateinthecloningofanewsheep.

●Electricityisneededintheprocedure.

●SheepBprovidesasomaticcellfortheclone.

●ThelambistheexactcopyofsheepA.

F

T

T

F

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WhichofthefollowingstatementsaboutcloningisNOTtrueaccordingtotext?

A.Cloningissomethingthathasbeendevelopedquiterecently.

B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.

C.Cloningisusedbygardenerstomakemoremoney.

D.Animalcloningismuchmoredifficultthanplantcloning.

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ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworked

hardwithpatience

C.thescientistswererewardedandgotlotsof

money

D.manyotherattemptstoclonemammals

failed

Thedeterminationandpatienceofthescientistswasrewarded/paidoff.

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TheproblemsofDollythesheep

TheeffectofDollythesheep

●Encouragingnews:

Itseemedtodevelop________andproduced______ina_______way.

●Disturbingnews:

Itlivedfor____years,halfthelengthofthelifeofthe_______sheep.

●Itsappearanceraisedastormof________andhadagreatimpactonthe_____andpublic___________.

●Itopenedeverybody’seyestothepossibilityofusingcloningtocure_______________andevenproduce_____________.

normally

natural

alamb

6

original

objections

media

imagination

seriousillnesses

humanbeings

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Argumentsoncloning

●Evilleadershopetoclone___________.

●Religiousleadersraised________questions.

●Manygovernments_______researchintohumancloning.

●Somecountriescontinuedto___________evidenceoftheabundantmedicalaid.

themselves

moral

forbade

accumulate

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Advantagesofcloning

plant

new

●Cloningplantscanbeusefulforresearchon________________.

species

quantities

●Cloningplantscanproducelarge________ofplantsfor____.

sale

medical

●Cloningisvaluablefor________researchonanimals.

cures

●Medicalcloningcouldproduce_____forseriousillnessesinhumans.

Problemsofcloning

illnesses

●Animalclonesmaydevelopthe_______ofolderanimals

●Animalclonesmaydie_______thantheoriginalanimals.

younger

Evilleaders

●__________maywanttoclonethemselves.

moral

objections

●Thereare______________tocloninghumanbeings.

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●Wecanconclude_______

●Cloningisgoodforus.

●Cloninghastwoaspects.

●Ifcloningisusedinacorrectwayitcanbringmanyconveniencetous.

●Ifcloningisusedinanevilwayitcancausemuchtrouble.