甲、乙两同学质量之比m甲:m乙=4:3，若甲同学的体重为540N，则乙同学的体重为_______N．
405
The points put forward at the conference the government should pay more attention to the poor were widely accepted.
A．that
B．where
C．when
D．which
硝苯地平：
A．作用于窦房结和房室结B．作用于外周血管和冠脉血管C．作用于肾脏血管D．作用于脑血管E．作用于肾上腺素能神经末梢
