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问题 单项选择题

根据《广东省公路收费站管理办法》的相关规定：经营性项目是指有经营期限，以（）而收取车辆通行费的项目。

A、偿还投资者利益

B、收费还贷

C、还清贷款本息

D、收回投资

答案

参考答案：A

单项选择题

Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.
As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors—retirement, obsolete knowledge and skills, inferior standards of living—lower the status of the aged in society.
A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

According to this passage, the status of the aged is lowered by their ______.

A．forced retirement

B．inferior housing

C．longer life span

D．fixed incomes
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单项选择题 A1型题

最易引起房室传导阻滞的是（）。

A.前壁心肌梗死

B.下壁心肌梗死

C.侧壁心肌梗死

D.后壁心肌梗死

E.广泛前壁心肌梗死
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