——What does your Chinese teacher look like?
——_________.
A:She likes reading
B:She's tall and thin
C:She's thirty
D:She's very good
学者任继愈曾经感慨地写道:“经过百年的奋斗,几代人的努力,中国人民终于站起来了。”他感慨的历史事件是 ( )