心悸不安，精神涣散，多由下列何种因素引起（）。
A.喜伤心
B.怒伤肝
C.思伤脾
D.悲伤肺
E.恐伤肾
参考答案：A
_____ her mother after being separated for 20 years, she couldn’t help, even though she tried not to, ______.
A．Seen, crying
B．To see, cry
C．Seeing , crying
D．Having seen, crying
4-硝基苯胂酸,2-氨基苯胂酸
