主清肺与胃之火的药物是（）
A.夏枯草
B.石膏
C.淡竹叶
D.栀子
E.黄芩
参考答案：B
我从来没有瘫痪过，或是感到肌肉非常软弱无力。
A．是
B．否
Which of the following most accurately reflects the concept that competitive markets allocate resources fairly as long as the same rules apply to all participants（）
A. Utilitarianism.
B. The symmetry principle.
C. The fairness principle
