医学伦理学公正原则的本质是对病人（）。
A.充满爱心
B.细心负责
C.一视同仁
D.耐心周到
参考答案：C
He used to visit his parents _____, but he is too busy to call on them now.
A every second weeks B every two weeks
C every a few weeks D every two week
青贮饲料原理是什么？
