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英语专业四级听力50篇 045:The Influence of Life

时间:2018-03-02 08:57来源:互联网 提供网友:qing   字体: [ ]
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The Influence of Life

In the early times when human beings hunted and gathered food, they were not in control of their environment. They could only interact with their surroundings as the other lower animals did.

When they learned to make fire, however, they became capable of altering their environment. To provide themselves with fuel, they cut down trees. They also burned clearings in forests to increase the growth of grass and to provide a greater grazing area for the wild animals that human beings fed upon. This development led to farming and the domestication1 of animals. Fire provided the means for cooking plants which had previously2 been inedible3.
Only when the process of meeting the basic need for food reached a certain level was it possible for humans to follow other pursuits such as setting up families, forming societies and founding cities.


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1 domestication a412c94ddc4dddbce0e57281001e9ede     
n.驯养,驯化
参考例句:
  • The first was the domestication of animals. 第一个阶段是驯养动物。 来自《简明英汉词典》
  • In northwestern China, there is no evidence for endemic domestication of any animals. 在中国西北,没有任何当地动物驯化的迹象。 来自辞典例句
2 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
3 inedible PQQzU     
adj.不能吃的,不宜食用的
参考例句:
  • The food was totally inedible.食物完全无法下咽。
  • These chemicals make the fruit inedible.这些化学品使这种水果不宜食用。
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TAG标签:   英语听力  英语考试  专业四级
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