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Chương 1

1. The last of the great ice ages occurred about twenty thousand years ago. 2. The earth froze. 3. Humans had small bodies and not much hair. They were frail. 4. But their intellect and language protected them. 5. Thus passed several millennia.

1. The ice gradually melted, and a warm period began. 2. The temperature rose, as did the sea level, giving rise to a verdant, water-filled world. 3. Large beasts like the irish elk and the mammoth disappeared. 4. At a time when civilization had yet to take root on the streambanks, 5. Humans were still living in tribes.