3) Owing to the remarkable development in mass-communications, people everywhere are feeling new wants and are being exposed to new customs and ideas while governments are often forced to introduce still further innovations for the reasons given above. At the same time, the normal rate of social change throughout the world is taking place at a vastly accelerated speed compared with the past. For example, 4) in the early industrialized countries of Europe the process of industrialization----with all the far-reaching changes in social patterns that followed----was spread over nearly a century, whereas nowadays a developing nation may undergo the same process in a decade or so. All this has the effect of building up unusual pressures and tensions within the community and consequently presents serous problems for the governments concerned. 5) Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements----themselves made relatively easy nowadays by modern means of transport. As a result of all these factors, governments are becoming increasingly dependent on biologists and social scientists for planning the appropriate programs and putting them into effect.
Part C
2000年
71.在现代条件下,这需要程度不同的中央控制,从而就需要获得诸如经济学和运筹学等领域专家的协助。
72.再者,显而易见的是一个国家的经济实力与其工农业生产效率密切相关,而效率的提高则又有赖于各种科技人员的努力。
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