练习说明
句子填空 题目要求：阅读文段，从文中挑选原词补全句子，每道题目都有特定的字数要求，以黑体加粗字标示。请把答案填到每题空缺处。
Choose NO MORE THAN ONE WORD from the passage for each answer.
第 1 题
The single largest step in early man's social evolution came around 8000 BC, with the invention of animal husbandry and agriculture. This enabled people to progress from living in nomadic communities to settling in small towns.
The advent of farming and ______ allowed early humans to shift from nomadic lifestyles to settled habitats around 8000 BC.
第 2 题
The history of invention is littered with useless devices that never caught on, but the first and second millennia BC were periods of invention for the sake of necessity. And in contrast with the modern era, in which science provides the basis for technological developments, scientific knowledge was limited and technological skills were handed down through generations.
The inventions of the first and second millennia BC were products of ....................
第 3 题
The popular image is that of the technical and cultural achievements of the Roman Empire collapsing in the fifth century, and being followed by a period often known as the Dark Ages, when creativity ceased. However, there was little about the period between the fifth and tenth century that was dark or backward.
It is often wrongly assumed that ......................disappeared in the centuries after the fall of the Roman Empire.
第 4 题
In China, technical skills were highly valued by government officials, who prevented any new method or machine from being introduced unless it offered a clear benefit. The stability of their rule allowed paper, the lock gate, the abacus, the first mechanical clock and gunpowder to be developed.
The ______ of their governance facilitated the creation of inventions like paper and gunpowder.
第 5 题
By 1000 AD, new agricultural techniques had resulted in grain surpluses. This led many peasants to abandon small, individual farming plots in favour of the successful medieval communal pattern of open-field agriculture.
By 1000 AD, some areas were able to produce more ...................than they needed.
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