A-A+ Rivers are nourished by direct precipitation 2022-08-05 15:31:28 问答库 阅读 169 次 问题详情 Rivers are nourished by direct precipitation, which usually contributes extremely small to the water surface.A.YB.NC.NG 参考答案 正确答案:A解析:文章第二自然段第一、第二句说明此点。直接降水对河面水量的补充量常常是极少的。