学习完《高中地理》(必修2)第三章“地球上的水”有关“自然界的水循环”和“水资源的合理利用”后,结合临夏地区的实际,同学们对大夏河流经临夏市的河段进行了实地考察,发现市政部门对滨河中路的河道进行了硬化处理(对流经市区的河道进行整治时将河道、河床进行水泥硬化)。 After learning “High School Geography” (Compulsory 2), Chapter 3, “Water on Earth”, “Water Circulation in Nature” and “Rational Utilization of Water Resources,” combined with the actual situation in Linxia, ​​students are right Daxia River through the Linxia City River conducted a field visit and found that the municipal department of Binhe Road, the hardening of the river (river flow through the urban area when the river, river bed hardening cement).