年年在长黄河的年龄已有六七十万岁了,比长江还大几岁。但是,它一点不显老,仍然朝气蓬勃,生机旺盛,并且年年都在长身体,一年要长六七百米哩。黄河为什么会长呢?这是因为,黄河每年从黄土高原搬运泥沙16亿吨,一部分丢在下游河道中,大部分则要送入海洋。送入海洋的泥沙,都堆 The age of the Yellow River every year has six or seven hundred thousand years old, still older than the Yangtze River. However, it is no longer visible and still vibrant and vigorous. It grows year after year and takes six or seven hundred meters a year. Why is the Yellow River president? This is because the Yellow River every year from the Loess Plateau handling 1.6 billion tons of sediment, some lost in the lower reaches of the river, most of them have to be sent to the sea. Sediment sent to the sea, all heap