下列药中属于养心安神药的有（）
A.琥珀
B.酸枣仁
C.柏子仁
D.合欢花
E.远志
参考答案：B, C, D, E
解析：琥珀是重镇安神药。
顶底板岩层断裂型冲击地压有几种？
—_____ your holiday?
—It was pretty good. [ ]
A. How did
B. Where did
C. How was
D. Why did
