She____(choose) as the chairman of the Students Union. It made us very happy.
The book is very interesting ____ (真正地).
年代计算尺是学习历史经常要用到的工具之一,为了搞好期末复习,八(2)班张欣同学自制了一把历史年代尺,它展示了***90年的奋斗历程。其中③处填写正确的是( )