The text boxes in the left panel have been placed in a random order. Restore the original order by dragging the text boxes from the left panel to the right panel.
左栏的文本框排列顺序是乱的。请把它们拖到右栏，恢复成原文的正确顺序。
Source
1It was so superior to existing tools that soon others were following the inventor's lead and making hand-axes of their own.
2Sometime about a million and a half years ago, some forgotten genius of the hominid world did an unexpected thing.
3Eventually whole societies existed that seemed to do little else.
4He (or very possibly she) took one stone and carefully used it to shape another.
5The result was a simple teardrop-shaped hand-axe, but it was the world's first piece of advanced technology.
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