硝苯地平可用于治疗()
A．心绞痛
B．高血压
C．肺动脉高压
D．阵发性室上性心动过速
E．心房颤动
参考答案：A, B, C
We have no more vegetables in the fridge. I _____and buy some.
A．go
B．went
C．will go
D．was going
配送是缩小范围中物流活动的全部体现。( )
