2023學年完整公開課版DNAtheSecretofLife2

外研版高中英語選修9

Module2

DNA—theSecretofLifeCurrentlytherearesome20,000chemicalsinuse,butthescientistsonlyhavedetailedinformationonaround1,000ofthem.

ToseetheadvantagesofGMfoodyouhaveonlytoconsidertherecentpressrevelationthattheaveragelettucereceiveselevenpesticideapplicationsbeforeitreachesthesupermarketshelf.I’msurechemicalsandtheirrolesindiseasewillbecomeabigissueinthenextcenturyasthepopulationofthedevelopedworldworriesincreasinglyaboutitshealth.ThereasonGMfoodwillnotgoawayisthatweneedathree-foldincreaseinfoodproductionbytheyear2050tokeeppacewiththeworld’spredictedpopulationgrowthtotenorelevenbillion.

It’snotjustaquestionofmoremouthstofeedeither.

Whatisoftenforgottenisthatalltheseextrapeoplewilltakeupspace,reducingtheoveralllandavailableforagriculture.Theworldhas800millionhungrypeople.

Untilnow,foodsupplieshavebeenincreasedbyimprovedvarieties,pesticidesandartificialfertilizers:thegreenrevolution.

Nowwe’reontheedgeofanewrevolution:ageneticone.ItmaywellbethatinthelongtermitisthedevelopingworldthatbenefitsmostfromGMfoods.

It’struethatforthenexttenyearsorsoGMcropsmaybetooexpensive.Butthelessonofpersonalcomputersisapplicablehere－oncethetechnologyhasbeendevelopedformoney-spinningcrops,likemaize,soybeansandcotton,itwillfilterdownandbecomeaffordableforall.Thisdoesn’tmean,unfortunately,thatfamineswilldisappear,butseverityanddurationwillbehelpedbyanimprovedabilitytoproduceanddistributefood.Aswemoveintothisneweraofagriculturewe’reembarkingonanexperiment.

Butrememberthattheworldhasseenanumberofexperimentsbefore.

Wehavebeenrefiningspeciesofwheatforseveralthousandyears.

Geneticengineerslikemearenotdoinganythingasdramaticasmakingacabbageintoacauliflower,ashasbeendonebyplantbreedersinthepast.

We’resimplytappingintothewholegenepool,ratherthanconcentratingononespeciesatatime.1．Accordingtothepassage,wecanseethattheauthorhasa/

an

attitudetowardsGMfood.A．disappointed B．indifferentC．hopeful D．uncertainReadthepassageandchoosethebestanswer.2．Whichofthefollowingstatementsiswrong? A．Chemicalsandtheirrolesindiseasewillbecomeabigprobleminthefuture. B．Inthelongterm，itisthedevelopedworldthatbenefitsmostfromGMfoods. C．It’struethatforthenexttenyearsorsoGMcropsmaybetooexpensive. D．FamineswillnotcompletelydisappeareventhoughGMfoodbecomesaffordableinthefuture.

答案

1.C

2.B

Module2DNAthesecretoflifePeriodOne

Introduction&ReadingandVocabulary

(1)（外研版選修9）1．

v．審問，盤問，詢問→

n．問題2．

n．調(diào)查→

v．調(diào)查3．

v．使變樣，改變→

adj.可改變的；可修改的→

n．改變；更改；變更；修改Ⅰ.單詞識記question

question

investigation

investigate

alter

alterable

alteration

4．

v．做，執(zhí)行；表演；正在進行→

n．表演者→

n．執(zhí)行，履行；演出，表演5．

n．結(jié)果；影響→

adj.隨之發(fā)生的；由某事物引起的→

adv.所以；因而perform

performer

performance

consequence

consequent

consequently1．take

(長相或舉止)像(長輩)2．look

看起來像3．havean(enormous)

on有(很大)影響4．in

在坐牢5．compare...

把……同……相比6．get

of除掉7．inthe

future在不久的將來8．

theotherhand在另一方面9．pass

傳給(下一代)10．pay

付款Ⅱ.短語天地after

like

influence

prison

with

rid

near

on

onto

for

1．Asaresult,therearemanyimportantissuestodiscuss.[信息提取]句中的todiscuss作定語修飾issues。在therebe

句型中，修飾主語的不定式可用主動，也可用被動。

[例句仿寫]今天有許多問題需要解決。Ⅲ.句型搜索Therearealotofproblemstosettle.

2．Anewfutureisapproaching.[信息提取]本句中的“isapproaching”是進行時態(tài)表示將

來。類似的動詞還有g(shù)o,come,leave,arrive,start等。

[例句仿寫]新年就要來了。TheNewYeariscoming/

approaching.

3．TwomonthslaterJuliahadasmallbutveryexpensiveoperation,usingatechnologycalledgeneticengineering.[信息提取]句中的“calledgeneticengineering”是v.-ed短語

作定語修飾technology且與該詞為被動關(guān)系。

[例句仿寫]這是一本農(nóng)民寫的書。Thisisabookwirttenbyapeasant.閱讀課文，根據(jù)課文內(nèi)容填空。

Howwouldyoufeelifsomeonegaveyouanenvelope1adescriptionofeveryoneofyourgenes?It’sa2questiontoanswer.

Butthefactis3scientistshavealreadybeguntodiscoverhowcertain4influenceus.

Wehaveknownforalongtimethatmanyofourphysicalcharacteristicsare5.

Forexample,oureyecolorandcertaindiseasesaredecidedbyourgenes.

6othercharacteristics,thingsarenotso7.Ⅳ.預讀理解Scientistsarelearningthat8ourgenes9ourenvironmentaffectus.

Scientistsmaysoonbeabletodescribeourgenes10

11，butitdoesnotmeantheywillbeableto12ourfuturewithanyrealsuccess.

Nonetheless,thefactisthatscientistswillbeabletoreadourgenesinthenearfuture.

Thiswill13newproblems.答案

1.with

2.difficult

3.that

4.genes

5.inherited6.With

7.clear

8.both

9.and

10.in

11.detail

12.predict

13.create1．questionv.正式提問；質(zhì)詢；問；懷疑n.問題；疑問；議題；課題；懷疑；猶豫 Thequestioniswhatyouwanttodo.問題是你想干什么。

Doyouquestionhishonesty？你懷疑他的忠實嗎？

Whichrouteisbetterremainsaquestion.

哪條路線較好，是一個問題。outofthequestion不可能；不允許；不值得討論outofquestion毫無疑問withoutquestion毫無疑問地inquestion

討論中的questionsbaboutsth就某事而詢問某人用question的適當形式或短語填空①Doyouknowthepersonwhoisbeing

？②Itis

forhimtostayinofficesolate.③Anewbicycleis

—wecan’taffordit.【歸納拓展】

questioned

outofquestion

outofthequestion Theinvestigationintotheaccidentwascarriedoutbytwopolicemen.兩名警察對這一事故展開調(diào)查。 Theaccidentisunderinvestigation.

這一事故正在調(diào)查之中。 Istillinsistthatwithoutinvestigation，therecannotpossiblybeanyrighttospeak.

我仍然堅持沒有調(diào)查是不可能有發(fā)言權(quán)的。2．investigationn.研究；調(diào)查(＋on/

of/

into)investigatev．調(diào)查investigatorn．調(diào)查員underinvestigation在調(diào)查中carryoutaninvestigation開展調(diào)查makesocialinvestigation

進行社會調(diào)查makeaninvestigationof/

on/

intosth對某事進行調(diào)查研究【歸納拓展】

用investigate的適當形式填空①Thepolicehavecompletedtheir

intotheaccident.②Scientistsare

theeffectsofdietonfightingcancer.③Sheisstillunder

.④Thearticlewasanexcellentpieceof

journalism.investigations

investigating

investigation

investigative

Thetailoralteredthejackettofitme.

裁縫將夾克為我修改得很合身。 alterforthebetter/

worse變好/變壞 ThecityhasalteredalmostoutofrecognitionsinceIlefttherefiveyearsago.

自從五年前我離開后，這座城市已變得幾乎認不出來了。 【完成句子】

沒有什么能改變我們應該受責備的事實。

Nothingcan

wearetoblame.3．a(chǎn)ltervt.修改，改動；改變；改建；vi.改變，變樣alterthefactthat

Thechildwasborndeformedinconsequenceof/asaconsequenceofaninjurytoitsmother.由于母親受傷，這小孩生下來就是畸形。Don’tworry.

It’sofno/

littleconsequence.別擔心，這無關(guān)緊要。Nothingofconsequenceoccurredtoday.沒發(fā)生重要的事。4．consequencen．結(jié)果，影響；重要性(＝importance)昨天下雨了，結(jié)果比賽取消了。Itrainedyesterday,and

thematchwascanceled.【完成句子】in

consequence

(1)(長相或舉止)像(長輩)Yourdaughterdoesn’ttakeafteryouatall.你女兒長的一點都不像你。(2)追趕；跟蹤IwasafraidthatifIstartedrunningthemanwouldtakeafterme.我害怕如果我跑起來，那人會追來。1．takeafter【辨析】

takeafter指長相(外貌)、性格像……(特指在一個家族成員里面長相、性格、品質(zhì)很相像)，它與looklike還是有區(qū)別的。looklike只指長相看起來像，它是泛泛而談，可指長得同某個明星相似，而不一定特指同一家族的人。He’salwaysmakingjokes;hetakesafterhisuncleGeorge.他總喜歡開玩笑，很像他伯父喬治。She’sverybeautiful,soshecertainlytakesafter/

lookslikehermother.她很美，長相隨她媽媽。takecareof小心；照顧takedown拆卸；記下；拿下takein接受；接待；吸收；領(lǐng)會takeoff脫下；起飛takeon

呈現(xiàn)；雇用；承擔；從事takeout取出，帶出takeover接管，接替takeup占用；繼續(xù)，接下去；拿起【歸納拓展】

用介副詞填空①Let’stakes

thetextwherewefinishedyesterday.②Thepeasantstook

armstofightagainsttheenemy.③Ihavehadmybadteethtaken

.④Don’ttake

toomuchwork.up

up

out

on

Ateacherhasagreatinfluenceonhispupils.

老師對學生有很大影響。 Herparentsnolongerhaveanyinfluenceoverher.

她的父母對她不再有真正的約束力了。

【歸納拓展】

(1)havean(enormous)influence/

effect/

impacton/

upon有(很大影響) undertheinfluence喝酒過多；醉酒 influenceoversb/

sth對某人/某物有影響 (2)influencen．[C]有影響的人或事物2．havean(enormous)influenceon有(很大)影響①他對孩子有很大的影響力。He

hischildren.②他酒醉得很厲害。Hewasgreatly

drink.【完成句子】hasagreatinfluenceon

undertheinfluenceof

She’shavinganoperationonherleg.她的腿正在動手術(shù)。

【歸納拓展】

operationn．手術(shù)；操作；運轉(zhuǎn) beinoperation在工作中，在使用中 comeintooperation開始工作，開始生效 ooperation使……運轉(zhuǎn)/實施 haveanoperation接受手術(shù) performanoperationonsb為某人做手術(shù)3．performanoperation做手術(shù)Thesystemneedstobeinoperationforsixmonthsbeforeitcanbeassessed.本系統(tǒng)需要運行六個月以后才能進行評估。Thenewrulescomeintooperationfromnextweek.新規(guī)定下周開始生效。It’stimetoputourplanintooperation.我們該實施計劃了。①這項新法律何時生效？

②醫(yī)生決定就地給他動手術(shù)。

【翻譯句子】Whendoesthenewlawcomeintooperation?Thedoctordecidedtoperformanoperationonhimonthespot. Doyouintendtopassthiscustomontotheyoungergeneration?你們打算將這種風俗傳給下一代嗎？ IwishIcouldpassonallmyknowledgeatonestroketotheseyoungpeople.

我希望把我的知識一下子全傳給這些年輕人。 Idon’tthinktheseneologismsworthpassingontobeginners.

我認為這些新詞不值得教給初學者。4．passonto把……傳遞給……/passsthonto把……傳給……①讓我們先把這一點理解好，然后就轉(zhuǎn)到下一點。Nowlet’sgetthisrightbeforewe

thenextpoint.②父母是怎樣把基因遺傳給自己的子女的？Howdoparents

genes

theiroffspring?【完成句子】passonto

pass

onto

本句為進行時態(tài)表將來的句子。對于很快就會發(fā)生的事，可以用進行時態(tài)表將來，但常局限于位置移動或方向性動詞，如：go，come，start，arrive，take，leave，move等。其常用時間狀語為：tomorrow，next，in＋時間段。 FourofthemarecomingforSundaylunch.

他們有4人將在星期天來吃午飯。 Heisleaving