清胃散主治（）
A.胃火牙痛
B.风热牙痛
C.风寒牙痛
D.虚火牙痛
E.阳虚牙痛
参考答案：A
Though buried in the ruins for about 70 hours after the earthquake, with great luck, the man managed to______.
A．recover
B．exist
C．survive
D．rescue
“齐二药”假药事件是“二甘醇”用于药品生产造成的．“二甘醇”在如下反应中用“X”表示，相关反应的化学方程式为：X+4O2=2C2H2O4+3H2O，则X的化学式为[ ]
A．C4H10O3
B．C2H5O3
C．C2H5O4
D．C4H10O4
