下列各种植物中,不属于苔藓植物的是( )
A:海带
B:地钱
C:墙藓
D:葫芦藓
我国最大的城市是( )
已知正方形ABCD的面积为9cm2,正方形EFGH的面积为16cm2,则两个正方形边长的相似比为____.
-- I heard that there are a few seats left for tonight's show.
-- Really? I was under the impression ______ they were sold out a long time ago.