Tim is weak in math, so he is trying _________ up with other students now.

A．to catch

B．catch

C．catching

D．caught

治疗新生儿病理性黄疽寒湿阻滞证，应首选

A．茵陈蒿汤
B．茵陈理中汤
C．茵陈五苓散
D．甘露消毒丹
E．茵陈四逆汤