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Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse
Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse
admin
2010-08-04
73
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.
【B1】
选项
答案
tremendous
解析
形容词,短文首句指出:技术发明在每个历史时期都直接或间接地引发社会变革。紧接着就讲到,中世纪马项圈的发明是农业上的一项______技术进步。根据上下文意思可推断出,此处是指马项圈这一发明给农业带来的巨大变化,所以空格处应为“巨大的”之意。
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0
大学英语四级
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