英语听力精选进阶版 11388

 

002 Olduvai Stone Chopping Tool 19 Jan 2010

Tue, 19 Jan 10

A simple chipped stone from the Rift¹ Valley in Tanzania marks the emergence² of modern humans. Faced with the needs to cut meat from carcasses, early humans in Africa discovered how to shape stones into cutting tools. From that one innovation, a whole history of human development springs. Neil MacGregor, Director of the British Museum, tells the story with contributions from flint napper Phil Harding, Sir David Attenborough and African Nobel Prize winner Dr Wangeri Maathai.

1 rift   

n.裂口，隙缝，切口；v.裂开，割开，渗入

参考例句：

• He was anxious to mend the rift between the two men.他急于弥合这两个人之间的裂痕。
• The sun appeared through a rift in the clouds.太阳从云层间隙中冒出来。

2 emergence   

n.浮现，显现，出现，（植物）突出体

参考例句：

• The last decade saw the emergence of a dynamic economy.最近10年见证了经济增长的姿态。
• Language emerges and develops with the emergence and development of society.语言是随着社会的产生而产生，随着社会的发展而发展的。