“三段式”课程的基本结构为()、专业基础课、专业课三段。
A.操作课
B.文化课
C.公共课
D.必修课
参考答案:B
5﹣(﹣10)
You _____ play with fire, Tom. It's dangerous. [ ]
A. needn't
B. may not
C. mustn't
D. wouldn't