进阶大学英语第五单元课后练习答案Word下载.docx

进阶大学英语第五单元课后练习答案Word下载.docx

《进阶大学英语第五单元课后练习答案Word下载.docx》由会员分享，可在线阅读，更多相关《进阶大学英语第五单元课后练习答案Word下载.docx（7页珍藏版）》请在冰豆网上搜索。

freshwater.

Transcript:

Today,accordingtoUNICEF,atleast2.6billionpeoplelackadequatesanitation,while1.1billionpeoplelivewithoutcleandrinkingwaterperiod.Wateristhekeycomponentinallofourdailylivesnomatterwherewelive,notonlyforhumanuse,butforenergy,industry,agriculture,andlivestock.Nowifyoulookattheearth,you’llnoticethatover75%ofourblueplanetiswater.Theproblemisonly3%ofthatwaterisfreshwater.

Reading&

Interacting

I.UnderstandingtheText

1.TextOrganization

1.1

Paras.1-2:

Weneedtoconservewateraggressivelysothatscientistscanhavetimetofindsolutions.

Paras.3-7:

Waterisgoingtobethemostimportantandmostcontentiousresourceofthe21stcentury.

Paras.8-9:

Therearesolutions,buttheytaketime.

Para.10:

Aggressiveconservationisneededtobuyustimebeforescientistsfindsolutions.

1.2

1）Waterisonthewaytobecomingthemostimportantresourceofthe21stcentury.Gettingwaterrightisthegreatchallengetheworldisconfrontedwith.Tomeetthechallengeconservationshouldcomefirst;

thenfollowitupwithnewsolutions.

2）Tointroducethewaterproblem,theauthortellsusaboutwhathappenedonenightwhenheandhisseven-year-olddaughterwerebrushingteethtogether.Insodoingtheauthortriestointroducethereadertoaserioustopicinacasualmanner.Besides,italsoremindsusofthefactthateveryonecanplayarole,eveninourdailylife,insavingwater.

3）HecitesthelateNobelLaureateRichardSmalley’slistofhumanity’stop10problemsforthenext50years.

4）Hewantstoshowthereaderhowdifficultitisforustofindasolutiontothewaterproblem.

5）Herepeatswhathesaysatthebeginningofthearticle:

Thewaterproblemcanbesolvedbut“Thescientistsneedtime.”

2.ComprehensionCheck

2.1Focusingonthemainideas

Inhis2003speechatRiceUniversity’sEnergy&

NanotechnologyConference,thelateNobelLaureateRichardSmalleyhighlightedthe 

top 

10problemsforthenext50years.Inhislist, 

energy 

sitsatthetop,andwatercomesnext.Now,withthepriceofsolarpowergoingdown,thedawnofanewenergy 

era 

isjustaroundthecorner.Asaresult, 

water 

isgoingtobethegreatestchallengeforhumanity.

Butthewaterproblemis 

complicated.First,unlikecoalandoil,watercannotbe 

replaced.Second,wateris 

intertwined 

witheveryothersectorofsociety.Third,whilewaterdemandsaregrowing,climatechangeisintensifyingdroughtsandfloodsandwatersuppliesare 

fluctuating.

Therearesolutions,suchasbuildingwater-transferaqueducts,hydroelectricdams,anddesalinationplants.Buttheymaybeincredibly 

expensive.Itwill 

taketime 

forscientiststofindaffordablesolutionstothewaterproblem.Beforethat,everyoneshoulddohisorherbitto 

conserve 

water.

2.2Diggingintodetail

1）Hemeansthatwaterismostlikelytobecomeastrategicresourcelikeoilthatcouldtriggergeopoliticalconflict.

2）Becausesolvingtheenergyandwaterproblemswillmaketheotherproblemseasiertodealwith.Abundantenergyandwatersupplieswillincreasefoodproductionandimprovetheenvironment.Theywillalsoreducepovertyanddisease,andsoforth.

3）Itmostprobablymeansenergyproducedatalowcost.

4）Hemeansthateveryothersectorofsocietyneedswater.Peopleneedwaterintheirdailylife.Energyproductionrequireswaterforcoolingpowerplants.Industryneedswaterforallsortsofpurposes.Agricultureneedswaterforirrigation.

5）Yes,hedid.Becausehesaidgettingfreshwaterfromsaltwateratacheappricewoulddwarfallotherscientificaccomplishments.

2.3Understandingdifficultsentences

∙1）A

∙2）B

∙3）A

∙4）A

∙5）A

II.FocusingonLanguageinContext

1.KeyWords&

Expressions

1.Itwillbeaclosegame.The 

outcome 

ishardtopredict.

2.Travelersonatight 

budget 

wouldchoosetogotherebytraininsteadofbyplane.

3.Tomwas 

onthepointof 

leavingthegardenwhenheheardsomeonecry:

“Isn’titTom?

Icanhardlybelievemyeyes.”

4.Innovation 

iswhatweneedwhenwedesignnewproducts.

5.Theproblemturnedouttobefarmore 

complicated 

thanhehad 

foreseen.

6.Theworksinthisroomare 

mostly 

bylocalartists.Theyembodytheartists’visionofapeacefulandenvironment-friendly 

civilization.

7.Water,though 

abundant 

inBrazil,isextremelyunevenly 

distributed 

amongitsregions.

8.Eventoday,myfirstEnglishteacher’sencouragingwordsstill 

ringinmyears.

9.Henryhasmanyfriendsw