Doctors across the world tell us it is necessary to eat lots of vegetables to keep the heart healthy. But a new study in February, 2022 suggested eating a lot of vegetables may not greatly cut down the risk of heart problems.

The study is from universities in Oxford and Hong Kong, China. Almost 400,000 people took part in it. They answered questions about their lifestyle, food, and what raw (生的) and cooked vegetables they ate. The study actually found that the risk of dying from heart problems was around 15% lower for those eating the most vegetables, especially raw vegetables.

However, scientists explained that many other factors (因素) also have something to do with this 15% drop. These factors may affect (影响) our health just as much as vegetables. These include other things we eat, how much exercise we get, where we live and whether we smoke or drink. Lead researcher Dr. Qi Feng from the University of Oxford said, “Our large study did not find clear evidence (证据) that how many vegetables you take can cut down chances of heart problems.”

But does it mean that eating vegetables is futile? No. Many other scientists advise that people should still eat at least five kinds of fruit and vegetables every day. That’s because vegetables are important for keeping good health and reducing (减少) the risk of serious illnesses.

【小题1】How many people answered questions for the study?

A．About 4,000.

B．About 1,000.

C．About 100,000.

D．About 400,000.

【小题2】According to the passage which may affect heart health?
①Whether we smoke.               ②Where we live.               ③How we get to work.
④What job we do.               ⑤How much exercise we get.

A．①③⑤

B．①②③

C．①②⑤

D．③④⑤

【小题3】What does the underlined word “futile” in Paragraph 4 mean?

A．Useless.

B．Bad.

C．Cheap.

D．Necessary.

【小题4】Which of the following is TRUE about the study?

A．Eating cooked vegetables is better than eating raw vegetables.

B．Many factors are as important as eating vegetables to heart health.

C．Dr. Qi Feng from the University of Oxford started the study alone.

D．Scientists found facts showing eating vegetables can keep heart problems away.

【小题5】What is the main idea of the passage?

A．Vegetables are healthier than meat.

B．Eating too many vegetables is bad for our health.

C．Doctors across the world are lying about eating vegetables.

D．Eating vegetables may not be so helpful to keep the heart healthy.