2011年潮宗街口万达建筑工地发现的古城墙遗址,是哪个朝代至哪个朝代的城墙?
参考答案:宋代至明代
After being broadcast on TV, the news was known by all ________.
A. at any time B. in no time all the time D. at one time
在一个西瓜上面横竖各切三刀,吃后,剩下多少块西瓜皮?
A.12
B.13
C.16
D.20