跟着美国课本学英文阅读3

作者简介

[美] 普特莱克，毕业于美国塔夫茨大学，获得英语文学学士和历史学硕士学位。他撰写的多部英语学习类畅销书被众多学子鼎力**。

内容简介

Early People A couple of million years ago, primitive humans were nothing like the modern humans of today. They were simplistic creatures that shared characteristics with both humans and apes. For much of this time, the Earth was extremely cold. It endured a very long Ice Age. During the Ice Age, much of the Earth’s surface was covered by huge sheets of ice called **aciers. However, around 12,500 years ago, the Ice Age ended. The ice and **aciers receded. And humans began to evolve, to spread out, and to become more civilized. Archaeologists h**e created a three-age system to describe prehistoric cultures. They are the Stone Age, the Bronze Age and the Iron Age. The Stone Age is often divided into the Old Stone Age and the New Stone Age. The Old Stone Age was the first part of the Stone Age and began around 2,000,000 B.C. The New Stone Age was the last part of the Stone Age and began around 10,000 B.C. During the Old Stone Age, humans lived as hunter-gatherers. They hunted animals and gathered wild plants for food. People could only make simple tools out of stone. Yet people learned how to make fire during this age. H**ing fire changed humans’ lives a lot. Fire provided light and helped people stay warm. Most of all, people could cook their food. In the New Stone Age, there began to be some more improvements. People learned to farm the land. People also learned to domesticate wild animals such as dogs, sheep, and goats. Some people began to settle in villages where there was fertile soil for farming. Since they could grow their own crops and raise their own animals, they no longer had to live as nomads. However, they still used stone tools, so this time is called the New Stone Age. Around 3000 B.C., the Bronze Age began in some parts of the world. During it, humans started working with soft metals such as copper and tin. They learned how to create tools and weapons out of bronze. And pottery became more common during this time. Around 1500 B.C., the Iron Age began in Europe. Of course, it started earlier in some places and later in other places. During the Iron Age, humans began working with iron. Also, the first real cities began to appear, and trade between cities became more commo**lace. It was during this age that human civilization started to develop much more quickly than ever before. 《跟着美国课本学英文阅读3》编辑**： ◆本书精选美国课堂教材，内容广泛，涉及历史、人文、科学等多个方面，让学习者深入了解各类趣味知识，扩展知识面！ ◆每篇阅读材料前后都有相应阅读训练，帮助学习者快速掌握阅读重点，*加关注文章主旨以及重要细节，熟悉考试答题节奏！ ◆每篇文章都配有与主题相关的图片，使学习者对主题和关键观点有*直观的理解。边看图边学百科知识，让阅读*加轻松有趣！