单项选择题

By 2030 the governments in developed countries may put an end to fixed retirement ages ______.

A．to save the current pension system
B．to ensure the benefits for healthy pensioners
C．to realize full retirement benefits substantially
D．to relieve the pensions burden on the working population
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单项选择题
The researchers would most probably agree with the following EXCEPT ______.
A．prisons should change their present practice
B．school should change their concepts of self-esteem
C．the tradition view is beginning to lose ground
D．self-esteem should be promoted and encouraged
单项选择题
The problem that the population becomes aging ______.
A．is exceptional to Germany
B．has become universal
C．can be relieved in Japan with the shrinkage of its population to around 95m
D．makes the economic outlook in the developed countries even more gloomy
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