希望英语(第二版)综合教程2U7

希望英语（第二版）综合教程1Unit7Health希望英语（第二版）综合教程2外语教学与研究出版社希望英语（第二版）综合教程2Unit7HealthSpeakingReadingAGrammarListeningWritingPresentationReadingB&ReadingCSpeakingTask1HomeTask2Task3LookatthepicturesonPage98andlistwordsorphrasesaboutthem.Thenshareyourworkwithothers.SpeakingTask1BackSuggestedWords:dietdiseasemedicinetabletbrainhabitharmpreventexaminedoctorimproveprotectcapsuleUsethefollowingsentencepatternsandthewordsorphrasesfromTask1totalkaboutthepicturesonPage98.A.…dogood/harmto…B.…bedeterminedto…SpeakingTask2SampleSentences:Toomuchmedicinewilldoharmtoone’shealth.Thedoctorisdeterminedtofindoutthecauseofthisstrangedisease.BackWorkinpairs.Taketurnsaskingyourpartnerthefollowingquestionsandmakenotes.Organizeyournotesandreporttotheclassusingthegivenparagraphasamodel.SpeakingTask3•Haveyoueverthoughtoftherelationshipbetweenyourlivinghabitsandyourhealth?•Doyouhaveanyhabitsthatareconsideredharmfultoyourhealth?•Whatshouldwedotostayhealthy?ModelReportJerryisayoungprogrammer.Sometimes,whenhesufferspressurefromwork,hewilllockhimselfupandsitinfrontofhiscomputerfordaysonendlivingonlyonfastfoodheordersonlineandkeepingawakebydrinkingstrongcoffeeandsmokingcigarettes.Heisalwaysconfidentofhisphysicalcondition,butintheoutbreakofSARS,hewasamongthefirstvictims.Inthehospital,hewasshockedtorealizethathisbadlivinghabitshaddonegreatharmtohishealth,makingiteasierforthedangerousvirustoknockhimdown.Now,hehasquitsmokingandisdeterminedtopickupfootballthatheplayedalotwhenhewasincollege.BackReadingATask2Task3Task1TextNewWordsandExpressionsTask4Task6Task7Task8Task5HomeReadingATask1Givebriefanswerstothefollowingquestions.Thenaskyourpartnerabouthis/heranswersandtakenotes.1.Doyouthinkitpossibleforahumanbeingtoliveforathousandyears?No,Idon’tthinkahumanbeingcanliveforathousandyears.Yes,Ithinkso.Andit’spossibleforahumanbeingtoliveforthousandsofyears,withnoendinsight.BackReadingATask1Givebriefanswerstothefollowingquestions.Thenaskyourpartnerabouthis/heranswersandtakenotes.2.Whatcouldbedonetohelppeoplelivelonger?Wecandoalotofthingstohelppeoplelivelonger.Forexample,wecanusecloningtechnologytoreplacethediseasedbodyparts;wecantakepeopletoouterspace;wecanusegeneticengineeringtosloworreversehumanaging;wecanalsousestemcelltechnologiestokeepyouth.BackReadingATask2TextWillWeEverBeImmortal?Ifaskedthisquestionnow,mostscientistswillprobablygiveyoutheanswer“No”,thoughtheyalsoadmitthefactthatthehumanlifespanhasbeengreatlyimprovedoverthepastcentury.However,historyhasoftenshownthat,beforeamajorbreakthroughoccurs,expertsgooutoftheirwaytodenythatitwilleverhappen.BackReadingATask2TextOnemajorbreakthroughingeneticengineeringcouldleadtocontroloftheagingprocess.Thiscouldthenopenupaseriesofnewapproachestokeepinghumanbeingsinayouthfulstateoverthelongterm.Rightnow,relativelylittlemoneyisbeingspentonresearchtoextendthehealthyhumanlifespan.Webelieve,however,thatevenasmallsteptowardsslowingorreversingagingwillleadtoanenormousflowofresearchfundstofurthercontrolaging.This,inturn,willleadtofurtherprogressinextendingthelifespan.BackReadingATask2TextScientistsaretryingtodiscoverthegenesthatcontrolaging.OneofthebestprogramstofindthesegenesisinprogressattheUniversityofCaliforniaatRiversideunderthedirectionofStephenSpindler,Ph.D.TheLifeExtensionFoundationisfundingtheresearch.Theprogramuses“genechips”tocomparetheeffectsofdrugsandtherapiesongenesinnormalagingwiththoseinslowedaging.Thisrevolutionarytechnologyisspeedingupthestepofdiscovery,whichwillleadtoeffectiveanti-agingtherapies.BackReadingATask2TextCurrentevidencesuggeststhattherearespecificgenesinvolvedinaging.Someofthesegenesmaybecomeactiveatsomepointinthehumanlifespan,thuscausingcellstogowronganddie.Othergenesresponsibleforkeepingyouthmaybecomeinactive,thuspreventingcellsfromperformingmetabolicfunctionsnecessarytosupportlife.Thereisalsoevidencethatsomegenesnecessaryforyouthfulfunctionmaybecomedangerouslaterinlife.BackReadingATask2TextGeneticengineeringisjustonetechnologythatcouldproduceahealthyhumanlifespanofthousandsofyears,withnoendinsight.Stemcelltechnologiesalsopromisetoleadtotherapiestokeepyouthandextendthehealthylifespanindefinitely.BackReadingATask2TextSimilareventsinhistorycanprovideabasisforsayingthathumanbeingsmaybeonthevergeofmajorincreasesinthelifespan.Ittookmankindhundredsofyearstofigureouthowtobuildaheavier-than-airvehiclethatcouldachievealongflight.Oncethebasicideaswereknown,however,aviationtechnologyadvancedquicklyanddramatically.BackReadingATask2TextWhenwereviewthehistoryofmedicine,itisclearthatonceafundamentaldiscoveryhasbeenmade,suchastherolethatbacteriaplayinmanyinfectiousdiseases,itdoesn’ttakelongtoturnthatdiscoveryintopracticalbenefitsforhumans.Weknowthatgenesareamajorcauseofagingandmanyage-relateddiseases.Oncewelearnhowtocontroltherightgenes,itshouldn’tbelongbeforewedeveloptherapiestoslowandreversehumanaging.BackReadingA我们会永生吗?如果现在被问到这个问题，大部分科学家可能会给你一个否定的回答，虽然他们也承认这样一个事实，即在过去一个世纪里，人类的寿命被极大地延长了。然而，历史经常告诉我们，在每次重大突破发生之前，专家都会极力地否认它会出现。TextReadingA基因工程的任何重大突破都可能使我们实现对衰老过程的控制，进而开辟出一系列的新途径，使人类永葆青春。目前，用于研究延长人类寿命的经