______ Gina Tara are studying Chinese history and culture now. They find them rich and amazing.
A:Both; and
B:Not only; but also
C:Either; or
D:Neither; nor
当0<x<1时,x,1x,x2的大小顺序是( )
已知二次函数y=ax2的图象经过点(2,1).
五一假期,小华同学的全家去旅游,在高速路上看到如图所示标志牌.以下分析中,合理的是( )