2019版高考英语一轮巩固达标练unit5music（含解析）新人教版必修2

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1、Music李仕才阅读理解。Ifyouwanttoslowaging,youmightwanttoeatless・Thisfindingisgoodnewsifyouwereamouse.Theresearchersstudiedmice,notpeople.JohnPriceandotherresearchersstudiedtwogroupsofmice.Onegroupwasabletoeatasmuchasitwanted.Theresearcherslimitedwhatthemiceintheothe

2、rgroupate.Theirdiethad35percentfewercaloriesthanthefirstgroupofmice.Pricesaysthemicewiththedietrestrictionswere“moreenergeticandsufferedfewerdisease.”TheywerenotjustlivingIongerbutseemedtostayyoungerforalongerperiodoftime-Theresearchersfoundthatfewercalories

3、slowdownanaturalmechanismincellscalledribosomes・Priceexplainsthatribosomesareresponsibleformakingimportantproteinsinthecells.Butwithfewercalories,theyslowdown.Thisgivesthecellsmoretimetorepairthemselves.Theresearcherssayribosomesusefrom10to20percentofthecell

4、，senergytomakethoseproteins.Pricewrotethat"becauseofthis,itisimpracticaltodestroyanentireribosome”whenitstartstobreakdown.However,^repairingindividualpartsoftheribosomeonaregularbasisenablesribosomestocontinueproducinghighqualityproteinsforlongerthantheywoul

5、dotherwise.Thistopqualityproduction,inturn,keepscellsandtheentirebodyfunctioningwe11.”Pricesaid,"ribosomeisaverycomplexmachine,likeacar・”Theyneed"maintenancetoreplacethepartsthatwearoutthefastest.Whentireswearout,”heexplained,“youdon'tthrowthewholecarawayand

6、buyanewone.Itcostslesstoreplacetheoldtires.”“Food,”hesaid,"istjustmaterialtobeburnedit，sasignalthattel1sourbodyandcellshowtorespond.”Pricesaidthefindingshelptoexplainhowexactlyourbodiesage・Andthismay"helpusmakemoreeducateddecisionsaboutwhatweeat.”1.Whatcanwe

7、knowaboutthemicewithlimitedcaloriesfromthestudy?A.TheycankeephealthyeasilyB.TheyneedmoreenergytobeactiveC.TheycanlookyoungerthantheyareD.Theywilllivealongerlifelikehumans1.Whatwi11happontoribosomesiftherearefewercalories?A.TheywillcompletelybreakdownB.Theyma

8、keproteinsinthecellsslowlyC.Theywi11producehighqualityproteinsmoreD.Theymayneedmoretimetorepairthemselves2.Priceexplainedtheribosomes'roleofrepairingthemselvesby.A.tellingastoryB・listingbasicdat