课文缩写
Mekong River begins 1.________ a glacier on a Tibetan mountain.At first,the river is small and then the water begins to move 2.__________.It becomes 3.________ as it passes 4.__________ deep valleys,traveling 5.________ western Yunnan Province.Sometimes the river 6.________ wide valleys and becomes a 7.______.We were both surprised to learn that half of the river is in China.After it leaves China and high altitudes,the Mekong becomes 8.________,brown and warm.As it enters Southeast Asia,its pace slows.It makes wide bends or meanders 9.________ low valleys to the 10.________where rice grows.At last the river’s delta enters the South China Sea.