Chinese chess has a history of more than 2, 000 years. Today it still interests _______ the young _______ the old.
A:both; and
B:either; or
C:not; but
D:neither; nor
下列二次根式中,最简二次根式是( )
在玉米种子的形成过程中,胚乳发育的正确途径是( )
下图所示《奏定学堂章程》颁布表明,当时中国( )