单项选择题

The 30-day forecast is determined by examining ______.

A．daily weather maps
B．upper air levels
C．satellite reports
D．changing fronts
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单项选择题
According to the third paragraph, the author tells us that older Americans ______.
A．have more job opportunities than young people
B．have new chances to remain active in society
C．live below the poverty line
D．no longer believe in the promise of a happy life upon retirement
单项选择题
We can conclude from the passage that the author ______.
A．tries to justify the youth-oriented, throw-away culture of the American society
B．suggests that people should not retire at the age of 65 or 70
C．thinks that the value of older Americans is gaining increasing recognition
D．thinks young people should give more respect to old people
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