2. 职称英语
  3. Technological invention has directly or indirectly produced social change in

Technological invention has directly or indirectly produced social change in

游客2023-07-24  88
问题     Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse collar in the Middle Ages was a【B1】______technological advance for agriculture; the【B2】______for use at sea so【B3】______navigation in the fifteenth  century that it led in the age of【B4】______; and the steam engine was an【B5】______factor in the industrialization of Europe in the nineteenth century.
    A discovery is another kind of technological【B6】______. While inventions add something  new to a culture, discoveries increase our knowledge of something that already exists. Gravity had always been there, but Newton "discovered" it: be【B7】______how this natural force worked and how its laws【B8】______to falling bodies. This knowledge made possible many new inventions.【B9】______.
    Since each invention makes more inventions possible, the speed of technological development tends to accelerate.  Benjamin Franklin experimented with electricity in the eighteenth century,【B10】______. In the hundred years since Edison invented the light bulb, the discovery  of electricity has led to tens of thousands of inventions, from the internal burning engine to the computer.【B11】______pose some of tile greatest challenges of our time. [br] 【B10】
选项
答案 but it was a hundred years before Thomas Edison moved from theory and experiment to practical application．
解析 but Thomas Edison put theory and experiment to practice a hundred years ago．
转载请注明原文地址:http://tihaiku.com/zcyy/2863932.html
相关试题推荐
随机试题
最新回复(0)