单项选择题

"Real wages" in the passage means ______.

A．cash instead of check
B．wages that have kept up with inflation
C．new income records
D．wages that can push up economy
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单项选择题
The author seems to suggest that ______.
A．the aged should not go to the nursing home
B．we can lengthen our lives through high-tech medicine
C．centenarians die faster than those who arc younger
D．the ever-growing segment of centenarians has caused concern
单项选择题
People past 100 can be described as all of the following EXCEPT that ______.
A．many of them had lived independently until their early 90s
B．they enjoy better health than people in their 70s
C．their longevity could be attributed to heredity
D．their medical expenditures are surprisingly low
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