A. 红 B. 黄 C. 绿黄 D. 绿
A. 正线通过 B. 列车经道岔直向位置。进入站内正线准备停车。 C. 列车经道岔侧向位置。进入站内准备停车。 D. 引导接车
A. 对 B. 错
A. writing B. to write C. on writing D. write
A. spent B. took C. paid D. cost
A. spend B. pay C. cost D. take
A. take B. cost C. spend D. pay
A. went B. go C. do D. did