肝郁泄泻的主方是
A．葛根芩连汤B．藿香正气散C．痛泻要方D．芍药汤
参考答案：C
下列现象中哪一个起到了增大压强的作用[ ]
A．铁轨扑在一根根的路枕上
B．推土机具有宽大的履带
C．斧头、剪刀等用过一段时间就要磨一磨
D．背书包要用扁而宽的带，而不是细绳
Bats are surprisingly long-lived creatures, some ______ a life span of around 20 years.
A. having B. had C. have D. to have
