How long is the Great Wall?walkmillions ofthe Great Wallmore thannear tokilometrethousandkilometrewalkmillions ofthe Great Wallmore thannear tothousand走路数百万长城更多的在 ... 附近千千米 classroom7 metres long30 centimetres long deskChangsha3,000 years oldPo Zi Street( 街 )more than 500 metres Summer Palacemore than 200 years old960 metres( 米 ) long8 years old3,000 years oldmore than 200 years old960 metres( 米 ) longmore than 500 metres30 centimetres long
