我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过（）
A.1%
B.1.5%
C.2%
D.2.5%
参考答案：B
I waited for her at the bus station for two hours, but she never______.
A．turned on
B．turned to
C．turned up
D．turned down
油滴釉
