Question

    Starting the day on an egg could keep your blood pressure(血压) 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(胆固醇) 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.

1.From the text we know that “ACE inhibitors” are________.

A.a kind of medicine B.a kind of protein

C.a kind of illness D.a kind of food

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

A.are the most nutritious food B.have no effect on blood cholesterol

C.can be included in a healthy diet D.are forbidden to be eaten in the UK

3.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.A

2.C

3.A

【解析】

这是一篇说明文。研究表明，吃鸡蛋可以控制血压。科学家已经证明，鸡蛋产生的蛋白质具有类似于强效降压药的功能，研究人员发现在鸡蛋中发现的胆固醇类型对增加心脏病风险几乎没有影响。鸡蛋应当被纳入健康饮食中。

1.推理判断题。根据第二段The research, from the University of Alberta in Canada, showed that when eggs come in contact with stomach enzymes 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.可知这项来自加拿大阿尔伯塔大学的研究表明，当鸡蛋与胃酶接触时，它们会产生一种蛋白质，其作用与ACE抑制剂相同，但需要更多的工作来证明这种作用在实验室外和人体内的效果。由此可推知，“ACE inhibitors”是一种药物。故选A。

2.细节理解题。根据倒数第二段中They can be encouraged to include them in a healthy diet as they are one of nature's most nutritious foods.可知可以鼓励他们把它们纳入健康饮食，因为它们是自然界最有营养的食物之一。由此可知，Bruce教授认为鸡蛋可以包括在健康的饮食中。故选C。

3.推理判断题。根据第一段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 pressure­lowering drugs.可知研究表明，吃鸡蛋可以控制血压。科学家已经证明，鸡蛋产生的蛋白质具有类似于强效降压药的功能。结合文章主要说明了研究表明，吃鸡蛋可以控制血压。科学家已经证明，鸡蛋产生的蛋白质具有类似于强效降压药的功能，研究人员发现在鸡蛋中发现的胆固醇类型对增加心脏病风险几乎没有影响。鸡蛋应当被纳入健康饮食中。故本文旨在介绍有关鸡蛋的科学发现。故选A。