American Ruhr

American Ruhr
【正确答案】：a. The Ohio River has been called the American Ruhr （after the Ruhr River in Germany）.
b. As in Germany, the area along the river is rich in valuable deposits of high-grade coking coal and is well-known for its steel industry.
c. The river provides cheap water transportation for raw materials
【题目解析】：参见教材P177。
掌握“Land(USA)”知识点。