"寒极生热"主要说明的阴阳关系是
A．阴阳交感
B．阴阳对立
C．阴阳互根
D．阴阳消长
E．阴阳转化
参考答案：E
—_____ does it take you to finish your homework every day?
—About an hour. [ ]
A. How much
B. How long
C. How soon
D. How often
单细胞蛋白饲料
