题目

图中，海拔最高的等高线与虚线中为山谷的分别是 A．③A  B．①B  C．③B  D．①A 答案：A 解析: 略 — I’ve made much progress in grammar. The ideas you ________ worked out fine.— Glad I could help.A. came up with B. ran out of C. looked up to