人类与石器是如何的呢？，从最初的石器时代到现代科技，人类文明史上的重要事件和进步

  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。 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 success of mankind。

1。 The stone chip is thought to be the most important tool because it ______。

A。 was one of the first tools

B。 developed human capabilities

C。

   led to the invention of machines

D。 was crucial to the development of mankind

2。 At the end of the passage the author seems to suggest that life in future is ______。

A。 disastrous

B。 unpredictable

C。 exciting

D。 colorful

参考谜底：

1。 D） 那是一道细节题。根据文章第二段尾句“Some scientists say that it was the key to the success of mankind”

可知“stone chip”关于人类的开展起到了十分重要的感化，那与D正好相符。

2。 B） 在文章最初一段中做者说人类在过往的几百万年时间里不断利用“stone chip”，人类社会发作的改变很小。而我们利用“silicon chips”才不外几年，生活却发作了浩荡的改变。于是做者发出了疑问：“二十年后的生活会是什么样子的呢？”，“ 二百万年后的世界又会是什么样子呢？”，表白未来的生活无法意料，那与选项B相符。