《内经》：“阴在内，阳之守也，阳在外，阴之使也”是说明阴阳之间的（）。
A.相互转化
B.相生相克
C.相互对立
D.互根互用
E.消长平衡
参考答案：D
The expert’s suggestion is that the villagers in Yunnan Province should have __________ to fresh and clean water as soon as possible.
A．entry
B．path
C．approach
D．access
