人教新课标高中英语选修8第二单元 Book 8 Unit 2 Cloning 学案含答案文档资料Word下载.docx

人教新课标高中英语选修8第二单元 Book 8 Unit 2 Cloning 学案含答案文档资料Word下载.docx

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LearningObjectives:

1.Learntheusefulnewwordsandexpressions.

2.Readthepassageandlearnsomeinformationaboutcloning.

LearningKeyPoints:

1.Grasptheimportantwordsandexpressionsinthereadingmaterial.

2.Learnthetextandmasterthemajorusesofcloningandthesuccessandproblemof

cloningDollythesheep.

LearningDifficultPoints:

1.HelpSsimprovethestudents’readingability.

2.Sslearnthereadingskills:

scanningandskimming.

Assessment:

LearningProcedures:

I.【Pre-classhomework】

Scanthetextandchoosethebestanswer.

1.Themainideaofthetextis_____________.

A.animalcloningisveryvaluableandcanbenefittheworld

B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbidden

C.animalcloningiswelldevelopedbecauseDollythesheepwasborn

D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture

2.WhichofthefollowingstatementsaboutcloningisNOTtrueaccordingtothetext?

A.Cloningissomethingthathasbeendevelopedquiterecently.

B.Twainsthatlookexactlythesameareoriginallyfromthesameegg.

C.Cloningisusedbygardenerstomakemoremoney.

D.Animalcloningismuchmoredifficultthanplantcloning.

3.ThelambisthecloneofthecellfromsheepBbecause______________.

A.itprovidestheeggcellB.itgivesbirthtothelamb

C.itprovidesthenucleusD.itisafemalesheep

4.WhichofthefollowingisNOTaproblemordangerofcloningmentionedinthetext?

A.Evilleadersmaywanttoclonethemselves.

B.Animalclonesmaydeveloptheillnessofolderanimalsandmaydieyoungerthanthedonoranimals.

C.Therearemoralobjectionstocloninghumanbeings.

D.Toomuchcloningmayleadtothedestructionofthebalanceofnature.

5.WhichofthefollowingisNOTanadvantageofcloning?

A.Cloningcanbeusedformedicalpurposes.

B.Largequantitiesoffoodcanbeproducedbycloning.

C.Famouspersonswhohavepassedawaycanbecloned.

D.Cloningcanhelpkeepanimalsfrombecomingextinct.

6.Wecaninferfromthelastthreeparagraphsthat_____________.

A.ThenormaldevelopmentofDollyhadnoeffectonthecloningofotherspecies.

B.Dolly’sseriousdiseaseandfinaldeathdisturbedeveryoneintheworld.

C.Dollysuccessfullyclonedanewlambwiththehelpofcloningscientists.

D.Therewereargumentsaboutanimalcloningandconcernsaboutthefutureofcloning.

7.Whatisthewriter’sattitudetowardcloninginthepassage?

A.Thewriterisagainstcloning.

B.Thewriterisinfavourofcloning.

C.Thewriterdoesnotstateanypersonalopinionaboutcloning.

D.Thewriterisinagreementwithcloning.

II.【While-class】

Step1.Lead-in

Step2.Groupdiscussion

Step3.Consolidation

Readthetextcarefullyandanswerthefollowingquestions.

1.Howmanymajorusesdoescloninghave?

_____________________________________________________________

2.WhatisusedintheprocedureforcloningDollythesheep?

________________________________________________

3.Whatcanweinferfromthelastparagraph?

4.Findoutthemainideaofeachparagraph:

Para.1:

___________________________________________________________

Para.2:

Para.3:

Para.4:

Para.5:

5.Readthetextagainandfillintheblanks.

Cloningisawayofmakingan1._____________（exactly）copyofanotheranimalorplant.Ithastwomajoruses.2.____________,gardenersuseittoearnprofits.Secondly,itisvaluableforresearchonnewplantspeciesand3.____________medicalresearchonanimals.Althoughcloningmammalsisdifficult4.___________（undertake）,thedeterminationandpatienceofthescientists5.____________（pay）offin2019.Thefact6.___________sheseemedtodevelopnormallywasvery7._______________（encourage）.Butshehadhalfofthe8.________________（long）oftheoriginalsheep,9.____________arosescientists’concern.Uptonow,cloningisstill10._________________（controversy）.

Keys:

【Pre-classhomework】

1.D2.A3.C4.D5.C6.D7.C

1.Ithastwomajoruses.Firstly,gardenersuseitallthetimetoproducecommercialquantitiesofplants.Secondly,itisvaluableforresearchonnewplantspeciesandformedicalresearchonanimals.

2.ThenucleusofsheepB.

3.Somegovernmentswillpermitresearchintohumancloningwithaimofmedicalaid.

4.Para.1:

Thedefinitionofcloning

Para.2:

Thetwomajorusesofcloning

Para.3:

Theproble