后勤工作例会一般有总结表彰会、各类业务会议或培训（研讨）班等。
参考答案：错
There _____ a lot of changes in Beijing in the past few years. [ ]
A. have been
B. are
C. were
D. has been
下列作曲家中，写作过24首前奏曲的有（）。
A.巴赫
B.莫扎特、肖斯塔柯维奇
C.贝多芬
D.肖邦
E.德彪西
F.福莱
