2019高考英语总复习unit2language牛津译林版必修3

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1、Unit2Language-、阅读理解Ifyouwanttoslowaging,youmightwanttoeatless・Thisfindingisgoodnewsifyouwereamouse.Theresearchersstudiedmice,notpeople.JohnPriceandotherresearchersstudiedtwogroupsofmice.Onegroupwasabletoeatasmuchasitwanted.Theresearcherslimitedwhatthemiceintheothergroupate.

2、Theirdiethad35percentfewercaloriesthanthefirstgroupofmice.Pricesaysthemicewiththedietrestrictionswereumoreenergeticandsufferedfewerdisease・”TheywerenotjustlivingIongerbutseemedtostayyoungerforalongerperiodoftime・Theresearchersfoundthatfewercaloriesslowdownanaturalmechanismi

3、ncellscalledribosomes.Priceexplainsthatribosomesareresponsibleformakingimportantproteinsinthecel1s.Butwithfewercalories,theyslowdown.Thisgivesthecel1smoretimetorepairthemselves・Theresearcherssayribosomesusefrom10to20percentofthecell"senergytomakethoseproteins.Pricewrotethat

4、"becauseofthis,itisimpracticaltodestroyanentireribosome”whenitstartstobreakdown.However,arepairingindividualpartsoftheribosomeonaregularbasisenablesribosomestocontinueproducinghighqualityproteinsforIongerthantheywouldotherwise・Thistopqualityproduction,inturn,keepscellsandth

5、eentirebodyfunctioningwel1・”Pricesaid,"ribosomeisaverycomplexmachine,likeacar.”Theyneedumaintenancetoreplacethepartsthatwearoutthefastest.Whentireswearout,”heexplained,"youdon'tthrowthewholecarawayandbuyanewone.Itcostslesstoreplacetheoldtires.”uFood,”hesaid,"isn，tjustmateri

6、altobeburnedit"sasignalthattellsourbodyandcellshowtorespond.”Pricesaidthefindingshelptoexplainhowexactlyourbodiesage-Andthismay“helpusmakemoreeducateddecisionsaboutwhatweeat.”1.Whatcanweknowaboutthemicewithlimitedcaloriesfromthestudy?A・Theycankeephealthyeasi1yB.Theyneedmore

7、energytobeactiveC.TheycanlookyoungerthantheyareD.Theywi111iveaIonger1ife1ikehumans2.Whatwillhappentoribosomesiftherearefewercalories?A.TheywillcompletelybreakdownA.Theymakeproteinsinthecel1ssiowlyB.Theywil1producehighqualityproteinsmoreC.Theymayneedmoretimetorepairthemselve

8、s3・Priceexplainedtheribosomes'roleofrepairingthemselvesby.A.tellingastoryB・listing