题目内容：

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 (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 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.

1.From the text we know that Ace inhibitors are ________.

A. a kind of protein    B. a kind of food

C. a kind of medicine    D. a kind of illness

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

A. are the most nutritious food

B. can be included in a healthy diet

C. have no effect on blood cholesterol

D. are forbidden to be eaten in the UK

3.We can infer from the text that ________.

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. about 50% of Britons think eating an egg a day is bad for their health

4.The text is meant ________.

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