含草酸钙砂晶的药材为（）
A．牛膝
B．巴戟天
C．白芍
D．苦参
E．防己
参考答案：A
计算。
It's a simple (简单的) sum (算术题). Can you work out which number is represented
(代表) by the letter O and which is represented by the letter K?
O = _____________ K = _____________
临床的可能诊断为
A．全身型重症肌无力
B．格林-巴利综合征
C．椎-基底动脉血栓形成
D．周期性麻痹
E．多发性肌炎
O = _____________ K = _____________