really?Who will give----lecture?What is it about?——professor Chen,-----president of BeijingUniversity .It's about the latest development of modern physics.A the；a B a；/C a；the D The ；/选什么为什么
问题描述：
really?Who will give----lecture?What is it about?——professor Chen,-----president of Beijing
University .It's about the latest development of modern physics.
A the；a B a；/
C a；the D The ；/
选什么为什么
答