产生高镁血症最重要的原因是（）。
A.肾脏排镁障碍
B.摄镁过多.
C.PTH分泌增多
D.醛固酮分泌增多症
参考答案：A
As we all know, the world’s supplies of oil_________ up with the development of industry and the increase of cars.
A．are being used
B．are using
C．have used
D．have been used
痛证与痰饮病常见的脉象是( )
A．滑脉
B．牢脉
C．弦脉
D．紧脉
E．动脉
