XX年考研英语完型填空模拟题及答案
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xx年考研英语完型填空模拟题及答案
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!Aging poses a serious challenge to OECD(Organization of Economic Co-operation and Development)countries
，in particular
，how to pay for future public pension liabilities. And early retirement places an__1__burden on pension financing. There is no easy solutio
n，but__2__retirement could help.
Early retirement may seem like a worthy individual goal
，but it is a socially__3__one
，and makes the present public pension system difficult t ...