The red colour of the National Flag of the PRC symbolises____1____and the yellow colour of the stars the golden brilliant rays radiating from the vast red land.The design of four smaller stars surrounding a bigger one signifies________2_______under the leadership of______3________. 2. China is a country of varied topographical features with____4_____ in the west and___5______ in the east. 3.The first primitive man known to have existed in China is________6_______,who lived about 1.7 million years ago._______7_______,who existed more than 600,000 years ago at Zhoukoudian, could walk upright,make and use simple tools, and make use of ______8_____.