枕大孔疝与小脑幕切迹疝的主要鉴别点是( )
A．血压下降B．频繁呕吐C．烦躁不安D．早期发生呼吸骤停E．剧烈头痛
参考答案：D
I'm seeing Ann this Sunday. Do you want me to any messages? [ ]
A. pass by
B. pass on
C. leave
D. carry
简述现代教育的一般特点．
