About a third of all common cancers in the United States, China and Britain could be prevented each year if people ate healthier food, drank less alcohol and exercised more, health experts said on Friday.
Reports from the World Cancer Research Fund (WCRF) suggest that making simple lifestyle changes could prevent some 40 percent of breast cancers alone in Britain and the United States, as well as tens of thousands of stomach cancers.
“Even in 2011, people are dying unnecessarily from cancers that could be prevented through keeping a healthy weight, diet, physical activity and other lifestyle factors,” said a WCRF medical and scientific adviser.
WCRF findings are supported by World Health Organization (WHO) reports, which say regular exercise can prevent many diseases such as cancers and heart diseases.
Cancer is a leading cause of death around the world and its incidence(发病率) is rising. Each year around 12.7 million people discover they have cancer and 7.6 million people die from some form of the disease. There are about 200 known types of cancer.
Rachel Thompson, the WCRF’s head of science, said that while the message was simple — that not smoking, eating good food and being a healthy weight can help ward off many cancers — it was still a difficult one to get across.
The WHO says adults should do at least 150 minutes of exercise a week. This could be done by walking for 30 minutes five times per week or by cycling to work every day.
Peter Baldini, head of the World Lung Foundation, also called on all governments to introduce smoke-free laws and raise the price of cigarettes. Tobacco kills millions of smokers every year, and tobacco-related lung cancers also kill hundreds of thousands of people who don’t smoke but have been exposed to it second-hand.
“There isn’t a magic bullet to cure all forms of cancer, but we have the opportunity and the duty to protect people from developing cancer wherever possible,” Baldini said.
Which of the following words can best take the place of the phrase “ward off” in the sixth paragraph?

A．protect

B．prevent

C．develop

D．cure。

Which of the following statements is Not true according to the text?

A．Exercising and eating healthily can help to reduce cancer risk.

B．Each year about 12.7 million people are diagnosed with cancer around the world.

C．Every year millions of people die from smoking and lung cancers.

D．Adults should walk for fifty minutes three times per week.

Which of the following can be the best title of this text?

A．Simple life changes could stop millions of cancers

B．Cancer is a leading cause of death

C．Our bad lifestyle caused many diseases

D．The incidence of common cancers is rising

By writing the passage, the author mainly intends to ____.

A．advise people to develop healthier lifestyle.

B．warn people of the danger of cancers

C．explain why many people die from cancers every year.

D．introduce the ways to protect people from developing cancers

We can infer from Peter Baldini’s opinion in the last two paragraphs that ____.

A．all the lung cancers are linked to smoking

B．there is no medicine to cure the cancers but it’s our duty to find one

C．all governments should take measures to control smokers and protect people’s health

D．it’s our opportunity and duty to persuade people to give up smoking