What do the five Olympic signs on the flag represent?     1     is widely believed that the five-riing Olympic symbol was created by Frenchman Pierre De Coubertin in 1913. As the founder of the modern Olympic Games, he wanted     2    (celebrate) the 20the anniversary(周年纪念) of the Games and chose a design of five rings,     3     represented the five continents(洲) taking part in the Games. The rings     4    (become) the official Olympic symbol at the 1920 Games in Belgium.

Pierre de Coubertin thought that the five interlocking rings meant the five continents     5    (compete) in the Games and the meeting of their athletes at the Olympic games.     6    (actual) every part of the modern Olympic symbol and flag shows the main purpose of the Games in a particular way. The Olympic flag, with its familiar rings, is used as     7     international symbol of peace, unity and     8    (agree). The white background of the flag stands     9     peace and truth.

At the end of each Olympic Games, the mayor(市长) of the hosting city passes the Olympic fag to the mayor of the city where the next Olympics     10    (hold) for years later. The flag remains there until the next Olympics.

A group of students from England, who are interested in archaeology, have come to the Zhoukoudian caves for a visit. An archaeologist     1     (warm) gives them a brief introduction     2     the life and habits of the earliest people there.

Early people lived in caves and they made fires in the centre of caves     3     (keep) themselves warm, cook the food and scare their enemies away, such as tigers and bears. They might have kept the fire burning all winter because layers of ash almost six metres thick have been excavated.

Early people did wear clothes made from animal skins. They used sharpened stone     4     (tool) to cut up animals and remove their skins. Smaller scrapers     5     (use) to remove the fat and meat from the skin. Finally using needles     6     (make) of animal bones, they would sew the pieces together.

Early people also paid attention to their     7     (appear) and wore necklaces. Some of the necklace beads were made of animal bones but some were made of shells,     8     told us that all the fields around Zhoukoudian caves used to be part of     9     large shallow lake. They moved around, following the herds of animals. They didn’t grow their own crops, but picked fruit when it     10     (ripen) and hunted animals.