肉桂的功效是（）
A.补火助阳
B.散寒止痛
C.温肺化饮
D.温经通脉
E.引火归原
参考答案：A, B, D, E
— What’s the matter with you?
— Oh, once again I had my best friend ___, because the expression on his face ____ his anger.
A．hurting; betraying
B．to be hurt; to betrayed
C．hurt; betrayed
D．being hurt; betraying
《朱子家训》载：“一粥一饭，当思来之不易；半丝半缕，恒念物力维艰。”形成这一观念的主要原因是（ ）
A．小农经济，物资匮乏
B．男耕女织，自给自足
C．传统农业，精耕细作
D．自然经济，封闭保守
