"寒极生热，热极生寒"说明
A．阴阳对立制约B．阴阳相互转化C．阴阳互根互用D．阴阳消长平衡E．阴阳属性相对
参考答案：B
The Smith don't live here any longer. They _____ to another city ten years ago. [ ]
A. hurried
B. got
C. moved
D. returned
抹面砂浆终凝后，应及时保持湿润养护，养护时间不宜少于()。
A.28d
B.14d
C.7d
D.30d
