Successful innovations have driven many older technologies to extinction and have resulted
In 1870, homes and mules were the prime source of power on U.S. farms. One horse or 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 mm 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.
Which of the following is NOT mentioned by the author as a consequence of new technological developments?
A.Older technologies die away.
B.The quality of life is improved.
C.Overall productivity increases.
D.More raw materials become necessary.
B
解析:本题的依据句是短文的第一个句子。新技术发展的结果中没有提及生活质量的改善,而其他选项的信息都出现在依据句中。