混凝土拌合物的和易性是一项综合的技术性质，包含（）等含义。
A.流动性
B.黏聚性
C.耐久性
D.保水性
参考答案：A, B, D
— What do you know about the traffic accident ______ yesterday?
— It was the drunken driver who was ______ for it.
A．occurred; to blame
B．occurring; to blame
C．to be occurred; to be blamed
D．occurring; to be blamed
在SQL的Select命令中用______短语对查询的结果进行排序。
