Though it was very late, they __________their discussion.
A:continued with
B:went on
C:continued on
D:carried on with
按课文《白杨》内容,回答问题。
你觉得本课在写法上有哪些特点?
如图所示,S点为平面镜前跳棋子的位置,S′点为跳棋子的像的位置,P为人眼的位置,请在图中完成人眼在P点看到两个跳棋子的光路图.