题目内容：

    If you want to live longer, live around green space.

That’s the simple conclusion of the largest analysis ever performed on the relationship between the environment and human health—ever. Eight million people. Seven countries. One simple finding:

“When you are exposed to greenery or greenness around your home, your probability to die  is less compared to those with less greenness around their home,” says David Rojas, researcher at the Barcelona Institute for Global Health. And he was the main author of the study, which was published in The Lancet Planet Health teaming up with the World Health Organization.

Specifically, the research team found that for every 10% increase in plants cover that’s within 1,600 feet of your home, your probability of death drops by 4%.

Those hard numbers are the result of a large metastudy(元研究) analyzing nine separate studies about longevity and green space that looked at how and how long people lived over long periods of time. Subjects were from countries around the globe, too: Australia, Canada, China, Spain, Italy, Switzerland, and the U. S.

As Rojas explained, in every country, the finding was the same. People who lived near more green space lived longer than people who lived near less. This green space can be grass, trees, or gardens. It can be public or private space.

He also explained, The study didn’t discriminate(歧视), nor did it have the accurate data to show that some plants were better for our health than others.

1.Who carried out this research?

A.Rojas’ team

B.Rojas’ team and Lancet Planet Health

C.World Health Organization and Lancet Planet Health

D.Rojas’ team and World Health Organization

2.What does the underlined word “longevity” in Paragraph 5 probably mean?

A.the length of life B.the balance of life

C.the strength of life D.the quality of life

3.It can be inferred from the passage that           .

A.Gardens are better for our health than grass and trees.

B.People who are surrounded with plants are probable to live longer.

C.For every 10% reducing in plants cover, your probability of death will increase by 4%.

D.People from developed countries with more green space live healthier than those in the developing countries.