下列各组物质反应后,再滴入KSCN溶液,显红色的是( )
— Please don't ask me about this. It is none of your business.
— I don't think so. I think everyone has the right to know it.
如果三角形的两边长分别是3和4,那么连接这个三角形三边中点所得到的三角形周长可能是 ( )
选词搭配
庄严地( )