黄土高原水土流失造成的危害是（ ）
A．水土流失使沟谷增多、扩大、加深，导致耕地面积减少
B．水土流失加速了山地岩石风化，使沟谷扩大，小沟谷互相连结，使耕地扩大
C．水土流失使细沙增多，导致沙尘暴日益严重
D．水土流失使河流淤积，造成大量河滩地
答案：A
黄土高原水土流失造成的危害巨大，水土流失使沟谷增多、扩大、加深，导致耕地面积减少，还有会使得下游出现“地上河”等等问题。
| 句型转换。 |
| 1. My book is more interesting than his book..(改为同义句) His book _____ _____ interesting as my book. 2. She does her homework in the evening. ( 改为否定句 ) She _____ _____ her homework in the evening 3. Sandy has to stay at home to look after her brother.(一般疑问句) _____ Sandy _____ to stay at home to look after her brother. 4. They had fun on the Monkey Hill.(同义句) They _____ _____ on the Monkey Hill. 5. I don't want to become a singer. I think.(合为一句) I _____ think I _____ to become a singer. |