Question

Starting the day on an egg could keep your blood pressure(血壓) under control，research suggests.Scientists have shown that eggs produce proteins with a function similar to that of powerful blood pressure­lowering 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 egg­eating 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 three­egg­a­week limit in 2005.However，almost half of Britons believe the limit still applies.

16．From the text we know that “ACE inhibitors” are  ________．

A．a(chǎn) kind of medicine  B．a(chǎn) kind of protein

C．a(chǎn) kind of illness  D．a(chǎn) kind of food

17．According to what Professor Bruce said，eggs ________．

A．a(chǎn)re the most nutritious food

B．have no effect on blood cholesterol

C．can be included in a healthy diet

D．a(chǎn)re forbidden to be eaten in the UK

18．We can infer from the text that ________．

A．drugs to lower blood pressure will be replaced by eating eggs

B．stomach enzymes mixed with eggs can cure heart diseases

C．most Britons agree the three­egg­a­week limit should be dropped

D．a(chǎn)bout 50% of Britons think eating an egg a day is bad for their health

19．The text is meant ________．

A．to introduce scientific findings about eggs

B．to introduce a medicine made from eggs

C．to tell people how to lower their blood pressure

D．to advise people to eat as many eggs as possible

Answer 1

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。

16．A　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，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。由此可推知“ACE inhibitors”是一種藥。

17．C　細節(jié)理解題。根據(jù)倒數(shù)第二段最后一句的內(nèi)容可知，Bruce教授認為雞蛋屬于健康食物。

18．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為每天吃一個雞蛋對健康有害。

19．A　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)于雞蛋的科學發(fā)現(xiàn)。