2. 外语
  3. Labor force is composed of ______. The population which is top-heavy with older people poses a problem to ______.

Labor force is composed of ______. The population which is top-heavy with older people poses a problem to ______.

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问题 Labor force is composed of ______.
The population which is top-heavy with older people poses a problem to ______.
选项 A、the government
B、the economy
C、the workforce
D、ail of the above
答案D
解析 由末段可知older people过分增加，会给三方面造成影响： the government, the economy以及the workforce。
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