What 2008 event is china hoping to use as a showcase of its reform?

The answer is the Olympic Games or Beijing Olympics.
The Olympics have had a significant influence on Beijing’s economic development, environment, and the growth of the country’s advertising, television, the Internet, mobile phone, clean energy, and sports sectors. Building on 30 years of economic reform and opening and the substantial economic impact of China’s 2001 World Trade Organization (WTO) entry, the excitement surrounding the games is pulling many of these sectors onto the international cutting edge.

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.