为做好备课,需要教师()。
A.准确把握培训大纲
B.认真编写教案
C.刻苦钻研教材和参考资料
D.结合实际拟定适宜的教学思路和教学方法
E.随意发挥
参考答案:A, B, C, D
Napoleon would have taken over the world if he ______ the Battle of Waterloo. [ ]
A. wins
B. won
C. had won
D. has won
列车行李员举止形象标准是什么?