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Water is all around us. Water is in the ocean. Water is in the lakes and rivers. Water is in the air. There is more water than land on the earth. All living things must have it. We must have it, too. We cannot live without drinking water. Sometimes, we do not have all the water that we need. The land will dry up without water. Sometimes, there can be too much water in the land. If it rains very, very hard, the rain water will run down the hill. It takes some of the land with it when it runs down the hills. It is called erosion when the water takes the land away. "Erosion" in the passage means ____________. A.地震 B.雪崩 C.侵蚀 D.霜冻 根据前面的语句If it rains very, very hard, the rain water will run down the hill. It takes some of the land with it when it runs down the hills. 解释可以推知erosion是一种自然地理现象，即“侵蚀”，答案为C。 (责任编辑：admin) |