洋地黄中毒最早出现的反应是（）
A.食欲不振
B.头晕、头痛
C.恶心、呕吐
D.心律失常
E.绿视
参考答案：A
It’s no use _____ my husband ________ money. He won’t take your advice.
A．to argue with; about
B．arguing about; with
C．arguing with; about
D．to argue about; with
A．mgtgθ
B．mgsinθ
C．μmg
D．μmg
mgtgθ
mgsinθ