【正确答案】
D
【答案解析】[听力原文]26-28
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. (26)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/or 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 net have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily.
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. (27)The stone chip was one of the first tools that people used,and perhaps it is tile most important. Some scientists say that it was the key to the success of mankind.
Since 1960 a new kind of tool has appeared. This is the silicon chip-a little chip of silicon crystal. It is smaller than a flnger-nail,but it can store more than a million"bits'of information. It is an electronic brain. (28)Every year these chips get cleverer,hut their size gets smaller,and their cost Rets less. They are used in watches,calculators and intelligent machines that we can use in many ways.
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.
26．How did people make tools two million years ago?
[听前猜测] 预读各选项，可以预测本题考查做某事的方式。
[精解] 本文开头提到人类使用工具已有很久的历史了，2百万年以前人类就开始制造工具，They made these tools by hitting one stone against another，故选择D)。注意，听力的文章开头十分重要。