A:在政局动荡年代难以发挥作用
B:不符合西学东渐的历史潮流
C:盲目自大以“天朝上国”自居
D:对西方制度文明缺乏认识
From his________look,I could see that he didn't believe what I said.
小惠未徧( )
(x2+x+5)(x2+x﹣6)变形正确的是( )