2019年高考英语一轮复习 unit 2 healthy eating分层演练直击高考 新人教版必修3

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1、Unit2Healthyeating阅读理解(2018·辽宁重点高中联考)Thosewhoclaimbananasarefatteningarguethatbananascausethebodytomakelotsofinsulin(胰岛素),andinsulincausesfatgrowth.Howmuchinsulinweproduceisrelatedtohowfastfoodbecomessugarinourbloodstream.Howcanyouknowiffoodmakesalotofsugarquickly?The

2、glycemicindex(血糖指数),orGIratingtellsus.FoodswithGIscoresabove75areconsideredhighGIfoods,leadingtofastersugardevelopment.BananashaveaGIof62,whichisconsideredlow.Weightlosscanbeastruggleforanyone,butitisespeciallyhardfordiabetics(糖尿病患者).Astudylookedathowthestarchfromunri

3、pebananasaffectedtheweightofagroupofobesediabetics.Afterfourweeksofadiethighinbananas,diabeticslostsignificantlymoreweightthanonacontroldiet.Theyalsosawimprovementsininsulinsensitivityfromthebananadiet.What’smore,bananashavebeenshowntocutrisksofstrokes,diabetesandcanc

4、ers.(Bananasarethemostpowerfulfruitforloweringtheriskofkidneycancer.)Bananasarealsoarichsourceoffiber,whichhasbeenshowntohelpweightloss.Bananasthatstillhavesomegreenontheskinareevenhigherinfiber.Skinsfromgreenbananascanbetakenand,afterremovingthestemanddarktip,cutinto

5、smallpieces2－3incheslongand1/2inchwide.Thesepiecescanbemadeintoateaoraddedtoadish.Whenyoueattheskins,besureyouareeatingorganicbananas.Thefleshofregularbananasislowinpesticides,buttheskinsarenot.【解题导语】　本文反驳了“吃香蕉会使人发胖”这一错误观点，告诉大家香蕉不会使身体分泌很多胰岛素而导致脂肪增加，相反，香蕉对身体健康有着诸多好处。1．

6、WhatconclusioncanwedrawfromParagraphs1&2?A．Bananasarelikelytomakepeoplefat.B．Insulindeterminestheamountofsugar.C．LowGIfoodscanturnintosugarmoreslowly.D．Thefasterthefoodbecomessugar,thelessinsulin.C　解析：推理判断题。根据第二段中“Howcanyouknowiffoodmakesalotofsugarquickly?Theglycemic

7、index(血糖指数)．..fastersugardevelopment.”可知，血糖指数高的食物往往能更快地转化成糖分，反之，血糖指数低的食物转化成糖分的速度较慢。故选C。2．Whatdoestheauthorsayaboutbananas?A．Includingbananasindietsisgoodforhealth.B．Bananascancurepeoplesufferingkidneycancer.C．Eatingorganicbananascanprotectpeoplefromstrokes.D．Bananas’a

8、bundantfiberimprovesinsulinsensitivity.A　解析：推理判断题。根据文章第三段中的“...diabeticslostsignificantlymoreweightthanonacontroldiet.Theyal