氨茶碱()
A.解除支气管痉挛
B.降低肺毛细血管楔压或左心房压
C.增加心肌收缩力和减慢心率
D.减少烦躁不安和呼吸困难
E.快速减少血容量
参考答案:A
"We can’t go out in this weather,"said Bob,_______out of the window.
A.looking
B.to look
C.looked
D.having looked
抚育采伐