解颅的发病原因有（）
A.感受外邪
B.先天禀赋不足
C.病后伤阴
D.脾虚失运
E.外伤所致
参考答案：A, B, C, D
When you decide to start a family, you make a/an ______ to them. You shouldn’t turn your back on the people who love you.
A．contribution
B．commitment
C．devotion
D．effort
定势
