309教育网 www.309edu.com
Unit2 Healthy eating
Ⅰ.阅读理解
A
There",snodoubtthatwaterisvitaltoanylife.About60percentoftheaverageadulthumanbodyismadeofwater.Thisincludesmostofyourbrain,heart,lungs,musclesandskin,andevenabout30percentofyourbones.Yetthere",slittlescientificagreementabouttheexactamountofthestuffanindividualshouldconsumeeachday.Sohowmuchwaterdoyouactuallyneedtodrinktobehealthy?
Youmayhaveheardthatyoushoulddrinkeight8-ounceglassesofwateraday.Yet,thedownsideofthisrule,researcherssay,isthatdrinkingwaterbytheglassisnottheonlywaythathumanstakeinit.The “8×8” ruleessentiallyoverlookstwobigsourcesofdailywaterconsumption.Onesuchsourceisfood.Everythingyoueatcontainssomewater.Watermelons,forexample,aremorethan90percentwaterbyweight.Differentdietsnaturallycontaindifferentamountsofwater.Theotherkeywatersourceisotherbeverages.Non-alcoholicdrinkssuchascoffee,andtea,containmostlywaterandallcontributetoyourhydration(水量).
So,amongallthefood,waterandotherfluidsyouconsumeinaday,howmuchwatershouldyouaimtotakein?
TheNationalAcademyofSciencessuggeststhatwomenconsumeatotalofapproximately2.7litres(91ounces)ofwaterfromallbeveragesandfoodseachdayandmen3.7litres(125ounces).Butthesearejustgeneralguidelines.
Thetruthisthatthereisnomagicstandardforhydration—everyone",sneedvariesdependingontheirage,weight,levelofphysicalactivity,generalhealthandeventheclimatetheylivein.Themorewateryoulose,themorewateryou",llneedtoreplacewithfoodanddrink.Ifyouarelookingforconcreteadvice,though,thebestplacetolookiswithin.Drinkwaterwhenyou",rethirsty.
1.HowdoestheauthorsupporttheunderlinedsentenceinParagraph1? A.Byprovidingfacts. B.Byaskingaquestion. C.Bymakingacomparison.
D.Byputtingforwardsuggestions.
2.Accordingtothe “8×8” rule,howmuchwatershouldwetakeinaday? A.8ounces. B.64ounces. C.91ounces. D.125ounces.
3.What",sthedisadvantageofthe “8×8” rule?
A.Thewaterfrombothfoodandotherbeveragesisignored. B.Itincludestheamountofwaterfrombothfoodandbeverages. C.Itdoesnottakewaterfromdrinksintoaccount.
D.Itoverlooksthefactthatwetakein90%ofthewaterfromfruits. 4.Whatcanweinferfromthefinalsuggestion?
A.Amandoingtiringphysicalworkdrinkslessthan3.7litresaweek. B.Apersoningoodhealthdrinkswheneverhefeelsthirsty.
C.Anoverweightmaleinahotsummerdrinks125ounceseverytwodays.
309教育资源库 www.309edu.com
309教育网 www.309edu.com
D.Afemaleeatingalotofwatermelondrinksmorethan91ouncesdaily.
B
Wetalkaboutfoodinthenegative:whatweshouldn",teat,whatwe",llregretlater,what",sevil,dangerouslytempting,unhealthy.
Theeffectsaremoreharmfulthananyoverindulgent(放纵的)amountof “badfood” caneverbe.Bygettinganxiousaboutfood,weturnoccasionsforcomfortandjoyintosourcesoffearandanxiety.Andwhenweavoidcertainfoods,weusuallycompensatebyconsumingtoomuchofothers.
Allofthishappensunderthecoverofscience.Butacloserlookattheresearchbehindourfoodfearsshowsthatmanyofourmostdemonized(妖魔化的)foodsareactuallyfineforus.Takentoextremes,ofcourse,dietarychoicescanbeharmful—butthatlogiccutsbothways.
Considersalt.It",struethat,ifpeoplewithhighbloodpressureconsumealotofsalt,itcanleadtocardiovasculareventslikeheartattacks.It",salsotruethatsaltisoverusedinprocessedfoods.ButtheaverageAmericanconsumesjustoverthreegramsofsodium(钠)perday,whichisactuallyinthesweetspotforhealth.Eatingtoolittlesaltmaybejustasdangerousaseatingtoomuch.Thisisespeciallytrueforthemajorityofpeoplewhodon",thavehighbloodpressure.Regardless,expertscontinuetopushforlowerrecommendations.
Nevertheless,we",vebecomemoreandmoreinfluencedbyargumentsthatwemustavoidcertainfoodscompletely.Whenonepanic-causingitemfades,wefindanotherfocusforourfears.Wedemonizedfats.Thencholesterol.Thenmeat.
Isitaproblemthatpeoplewanttoavoidfood?Theansweris:yes.Becauseitmakesfoodscary.Foodshouldbeacauseforpleasure,notpanic.Formostpeople,it",sentirelypossibletoeatmorehealthfullywithoutlivinginterrororstrugglingtoavoidcertainfoodsaltogether.Ifthere",sonethingyoushouldcutfromyourdiet,it",sfear.
5.Whatmightbetheresultofavoidingcertainfood,accordingtotheauthor? A.Becominghealthy.
B.Overeatingotherfoods. C.Regrettinglater.
D.Enjoyingcomfortandjoy.
6.Whatdoestheunderlinedphrase “inthesweetspot” inParagraph4referto? A.Suitable. B.Unclear. C.Toomuch. D.Toolittle.
7.Bylistingonefoodafteranothertofear,theauthormeansthat . A.peopleareeatingunhealthyfood B.theenvironmentisunsafe
C.there",snopointavoidingcertainfood D.peopleshouldbecarefulaboutfood
8.Whichofthefollowingcanbethebesttitleforthetext? A.Treatingfoodnegatively B.Avoidingfoodskilfully
C.Consumingsaltwithoutcaution D.Eatingfoodwithoutfear Ⅱ.语法填空
309教育资源库 www.309edu.com
2020版高考英语总复习Unit2Healthyeating课时作业(含解析)新人教版必修3
