2. 考研
  3. Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consu

Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consu

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问题     Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consumption of energy, increased demand for raw materials, accelerated flow of materials through the economy and increased quantities of metals and other substances in use per person. The history of industrial development is full of examples.
    In 1870, horses and mules were the prime source of power on U. S. farms. One horse or mule was required to support four human beings—a ratio that remained almost constant for many decades. At that time, had a national commission been asked to forecast the horse and mule population for 1970, its answer probably would have depended on whether its consultants were of an economic turn of mind. Had they been "economists", they would have recognized that the power of steam had already been harnessed to industry and to land and ocean transport. They would have recognized further that would be only a matter of time before steam would be the prime source of power on the farm. It would have been difficult for them to avoid the conclusion that the horse and mule population would decline rapidly.
In the second paragraph, the author suggests that "economists" would______.
选项 A、consult the national commission on the economy
B、plan the economy through yearly forecasts
C、consider the influence of technological innovation important
D、value the economic contribution of farm animals
答案C
解析 根据第2段第3句，言中之意即“经济学家”应该考虑技术改进的重要性。
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