分析 幾個(gè)月前土豆被認(rèn)為是肥胖的敵人,但一項(xiàng)新的研究顯示土豆并沒有那么不好.
今年6月,哈佛大學(xué)的研究人員發(fā)現(xiàn),每天吃一些土豆,不論是否被磨碎、油炸或烤,都比一罐飲料或者一些肉更容易使體重增加.結(jié)論是因?yàn)橥炼箍偸潜蛔龀墒澄?--更容易改變淀粉導(dǎo)致血糖增加,身體不得不加倍運(yùn)作但血糖下降讓人饑餓,導(dǎo)致吃更多的食物.
但奧塔戈大學(xué)的研究今天給土豆的愛好者帶來了一些好消息.研究發(fā)現(xiàn)血糖生成指數(shù)(GI)在混合食物中很難分析.在一般情況下,不同的食品檢測到的GI比全餐低.該研究的作者之一,海莉多德說."但是,在這項(xiàng)研究中,三頓飯的GIs分析食物都含有雞肉、豌豆、胡蘿卜和羊肉一起,很多食物,包括土豆、米飯或面條."
發(fā)現(xiàn)顯示每餐的GI指數(shù)比想象中的要低.研究人員預(yù)期土豆的GI是65,但實(shí)際上是53."雖然馬鈴薯被認(rèn)為是高GI食物---但我們的工作表明,飲食中有少量的土豆并不會(huì)使你的血糖高.
這項(xiàng)研究涉及到18-50歲的30個(gè)健康人,該研究已經(jīng)在10月份發(fā)布在美國的十月期刊上.
解答 8--11DBBB
8題答案是D.細(xì)節(jié)考查題.文章第一二段都是說土豆能增加體重的不好消息,第三段是說好消息,自然是對于土豆愛好者而言的.故答案是D.
9題答案是B.細(xì)節(jié)考查題.根據(jù)The conclusion was that it happened because potatoes were always cooked-----making it easier for the body to change the starch(淀粉) which would increase the blood sugar levels.可知土豆容易使人發(fā)胖是因?yàn)樗慌胝{(diào).故答案是B.
10題答案是B.細(xì)節(jié)考查題.根據(jù)The body then had to work extra hard to get levels down but falling blood sugar made people hungry,which led to eating more food.可知低血糖容易使人餓.故答案是B.
11題答案是B.細(xì)節(jié)考查題.根據(jù)our work suggests that having a small amount of potato with a meal isn't going to drive your blood sugar high可知和其他食物一起引用,土豆不會(huì)使人發(fā)胖.故答案是B.
點(diǎn)評 文章講述了土豆不會(huì)使人發(fā)胖的一些研究說明.題目涉及多道細(xì)節(jié)理解題,做題時(shí)需要結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.
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