| 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, 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 A. Older technologies die away. B. The quality of life is improved. C. Overall productivity increases. D. More raw materials become necessary. [简答题]There have been many technological developments in the 20th century, for example, computers and electric power. Choose either of them, describe the changes it has brought about and discuss whether all the changes are positive.
You should write no less than 250 words. Write your article on ANSWER SHEET 2. [单项选择]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 w A. the steam engine had been invented B. a national commission on agriculture had been established C. the U. S. horse population was about 10 million D. technology began to be more economical 我来回答: 提交
|
