3.Starting the day on an egg could keep your blood pressure under control,research suggests.Scientists have shown that eggs produce proteins with a function similar to that of powerful blood pressure-lowering drugs.
The research,from the University of Alberta in Canada,showed that when eggs come in contact with stomach enzymes (酶) they produce a protein that acts in the same way as Ace inhibitors,but more work is needed to show the effects outside a lab and in the human body.
Earlier this month,British researchers declared that,contrary to popular beliefs,it is healthy to go to work on an egg.They concluded that the type of cholesterol (膽固醇) found in eggs has little effect on increasing heart disease risks.
Researcher Professor Bruce Griffin,from the University of Surrey,said,"The wrong beliefs linking egg eating to high blood cholesterol and heart disease must be corrected.The amount of fat in our diet has an effect on blood cholesterol that is several times greater than the relatively small amounts of cholesterol found in eggs.The UK public do not need to be limiting the number of eggs they eat.They can be encouraged to include them in a healthy diet as they are one of nature's most nutritious foods."
The British Heart Foundation dropped its three-egg-a-week limit in 2005.However,almost half of Britons believe the limit still applies.
73.From the text we know that Ace inhibitors areC.
A.a(chǎn) kind of protein
B.a(chǎn) kind of food
C.a(chǎn) kind of medicine
D.a(chǎn) kind of illness
74.According to what Professor Bruce said,eggsB.
A.a(chǎn)re the most nutritious food
B.can be included in a healthy diet
C.have no effect on blood cholesterol
D.a(chǎn)re forbidden to be eaten in the UK
75.We can infer from the text thatD.
A.stomach enzymes mixed with eggs can cure heart diseases
B.drugs to lower blood pressure will be replaced by eating eggs
C.most Britons agree the three-egg-a-week limit should be dropped
D.a(chǎn)bout 50% of Britons think eating an egg a day is bad for their health
76.The text is meantB.
A.to introduce a medicine made from eggs
B.to introduce scientific findings about eggs
C.to tell people how to lower their blood pressure
D.to advise people to eat as many eggs as possible.
分析 研究發(fā)現(xiàn),每天吃一個雞蛋對降低血壓大有裨益,雞蛋與胃酶結(jié)合后產(chǎn)生的蛋白質(zhì)與降壓藥物有著同樣的功效.
解答 73.C 推理判斷題.第一段的后半部分提到雞蛋產(chǎn)生蛋白質(zhì)的作用與強效降血壓藥物類似,此處與之相呼應(yīng),表示雞蛋與胃酶結(jié)合后產(chǎn)生蛋白質(zhì)的作用與藥物相當(dāng).由此可推知"ACE inhibitors"是一種藥.
74.B 細(xì)節(jié)理解題.根據(jù)倒數(shù)第二段最后一句的內(nèi)容可知,Bruce教授認(rèn)為雞蛋屬于健康食物.
75.D 推理判斷題.最后一段的最后一句提到幾乎一半的英國人相信對雞蛋的限制仍然適用,由此可推斷這些人依舊認(rèn)為每天吃一個雞蛋對健康有害.
76.B 主旨大意題.本文是一篇研究報告,第一段是文章的中心段,通讀全文可知,本文意在介紹關(guān)于雞蛋的科學(xué)發(fā)現(xiàn).
點評 做這類題材閱讀理解時要求考生對文章通讀一遍,做題時結(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)合選項選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據(jù).