填空题

A geodesic dome is basically a spherical structure created from rectangles.

【参考答案】

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中国已渐渐步入老龄化社会。(65岁以上的老年人已占全国人口的7%)2. 我认为应如何对待老年人群。(社会关爱与福利制度，家庭温暖，社区服务……)3. 我的结论。 How to Treat Our Aging Population
单项选择题
A new tendency is demographic change is that ______.
A．life expectancy has been going up steadily
B．there is a decline of the young population
C．in America the birth rate has gone above replacement level
D．the old population has risen sharply in USA
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