棱镜的光线效果：（）。
参考答案：通过棱镜，能使物象看起来向棱镜顶的方向移动
Tom, you can go out to play football after your homework .[ ]
A. will finish
B. is finished
C. was finished
D. finished
对于违反“禁令”的人员，如何处理？
