我国城市化进程不应该过快的原因是( )
A:科学技术水平不高
B:城市建设经验不足
C:人口素质不高
D:经济发展水平不高
Yesterday, I came across my former classmate, but his name ________ me, which made me embarrassed.
下列地理现象,不是由地球自转产生的是( )。