Higher income has already been linked to greater longevity and better health.A new study by a famous researcher suggests geographic location plays an key role in life expectancy（預期）for lower earners.That means if you're poor,you're likely to live for longer in a city like San Francisco or New York than in a city like Detroit or Cincinnati.

Being rich anywhere broadly means enjoying good health anywhere,but location is a key factor in health for people in lower income groups.Michael Stepner,one of the study's co-authors,said economic decline and decreasing populations in the Rust Belt aren't necessarily to blame.

The study found that location matters for low earners.Low-income individuals tend to live more healthily and for longer in cities with college-educated populations,high incomes,more immigrants,and high levels of government expenses,such as New York and San Francisco.The study also found measures of health—insurance coverage and health spending were of lesser importance than social and economic factors in determining health for low-income individuals.Nor did having health insurance seem to be a factor in increasing life expectancy for poorer groups."The key driver of differences in inequality across areas of life expectancy is probably not access to health care,"Mr Stepner said.

1.The underlined word "longevity" in Paragraph 1 is closest in meaning to " ".

A. successful experience B. long life

C. good relationship D. young appearance

2.What is a key part in life expectancy for lower earners?

A. Warm climate. B. Higher income.

C. Good education. D. Geographic location.

3.Where would this text most probably appear?

A. Travel guide. B. Health research.

C. Sports newspaper. D. Science fiction.

4.What is the best title for this text?

A. Higher earners like living abroad.

B. Being rich means having a happy life everywhere.

C. Lower earners are likely to live for longer in big cities

D. The government is trying its best to make people live longer

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