A:married
B:have married
C:have been married
D:have got married
下列是同学在网上搜到的一个历史事件的关键词“列宁”、“四月提纲”、“攻打冬宫”,这个历史事件应该是
在△ABC中,sinA·sinB=cos2C2,则△ABC的形状一定是 ( )