Tian'anmen Square is one of the biggest city squares in the world. It is in the middle of Beijing. It was built in 1417. Now the square is 880 metres from north to south and 500 metres from east to west. The total area is 440, 000 square metres. That's about the size of 60 football fields. It is widely known as a national symbol(国家象征) now.
【小题1】Tian'anmen Square is very big. (____)