国家开放大学 / 综合英语(2)
1. Which of the following can be best used as the title of the passage?
a.Retired People
b.Retirement Centers
c.The Increase of Aging Population
d.A Demographic Trend
a.Retired People
b.Retirement Centers
c.The Increase of Aging Population
d.A Demographic Trend
参考答案:
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