longest

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longest

1.The　（） River is the third longest river in the world, with the length of about 6,300 km.2.Which one is the 3rd longest river in the world?3.Kunlun Mountain Tunnel is the world’s LONGEST plateau tunnel on permafrost, with a total length of 1,686 meters.4.（） is the longest railway in the world.5.This is one of the longest bridges that（）on this river.6.The longest river in Britain is （）.7.（） is China’s mother river and （） is the longest river in China.