问题详情

Citizens of the world’s wealthiest countries may live longer than previously predicted, according to a study sponsored by the National Institute on Aging. By 2050, people in the G-7 nations (Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States) may be living anywhere from 1.3 years to 8 years longer than official estimates now predict. Researchers at Mountain View Research in Los Altos, California, examined 50 years of mortality data and found a long-term decline in death rates. That may mean that fewer workers will have to support many more elderly in the future than governments currently expect.

TEXT H
First read the following question.
84. Which is the best title of the passage？
A.How to protect your eyesight.
B.How to choose your computer.
C.A few tips for computer users.
D.Eye trouble and headache. 请帮忙给出正确答案和分析，谢谢！