-- Who won the first prize in English speech contest?
-- The prize went to the girl ________ speech was the most natural and fluent.
A:that
B:who
C:whose
D:不填
我国生活和生产用的交流电的周期为____,频率为____,1秒内电流方向改变____次。
Her ____ ____ is basketball.
下列计算或化简正确的是( )
据宋人《东京梦华录》记载:汴京“即早辰桥、街、巷口,皆有木竹匠人,谓之杂货工匠,以至杂作人失,道士僧人,罗立会聚,候人请唤,谓之罗斋。竹木作料,亦有铺席,砖瓦泥匠,随手即就”。材料反映出宋代的民营手工业( )