2. 职称英语
  3. 1　　Human beings have used tools for a very long time. In some parts of the world

1　　Human beings have used tools for a very long time. In some parts of the world

游客2023-11-22  62
问题 1　　Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily.
2　　Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to the success of mankind.
3　　Since 1960 a new kind of tool has appeared. This is the silicon chip - a litle chip of silicon crystal (硅晶体). It is smaller than a finger-nail, but it can store more than a million ’bits’ of information. It is an electronic brain.
4　　Every year these chips get cleverer, but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways.
5　　In the future we will not need to work with tools in the old way. Machines will do everything for us. They will even talk and play games with us. People will have plenty of spare time. But what will they do with it?
6　　Human beings used stone chips for more than two million years, but human life changed very little in that time. We have used silicon chips for only a few years, but life is changing faster every day. What will life be like twenty years from now? What will the world be like two million years from now?  [br] At the end of the passage the author seems to suggest that life in future is______.
选项 A、disastrous.
B、unpredictable.
C、exciting.
D、colourful.
答案 B
解析 此题为细节理解题。作者在文章最后两段提出了两个问题，而之所以这样提问，是因为作者在最后1段的前两句中讲到硅晶体在数年中给人类生活已带来了巨大变化，因而作者难以说清200年后会是什么样子，200万年后又会是什么样子，故选B。A、C、D均不能从原文中得到相关支持。
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