Which places of the following places of interest are inscribed on the World Heritage List? A: Yu Garden in Shanghai B: Longmen Grottoes C: Classical Garden of Suzhou D: Peking Man Site at Zhoukoudian

The first primitive man known to have existed in China is ( ), who lived about 1.7 million years ago. ( ),who existed more than 600,000 years ago at Zhoukoudian, in the vicinity of modern Beijing, could walk upright, make and use simple tools, and make use of ( ) .