填充墙砌至接近梁底、板底时，应留有一定的空隙，填充墙砌筑完并间隔（）
A.7
B.10
C.15
D.24
参考答案：C
It is reported that the epidemic half the town’s population.
A．wiped out
B．blocked out
C．found out
D．worked out
网球比赛决胜局里每打完几分要换边（）
A.4
B.6
C.7
D.8
