中风之痰热腑实证，宜选方

A．急性期应适当活动
B．注意对中风先兆症状的观察及治疗
C．注意功能锻炼
D．节制饮食
E．防止变证发生

The students couldn't（）what the teacher was trying to explain.

A.grip

B.seize

C.grasp

D.snatch