What did the boy do last night?
A:He went to the party.
B:He saw a movie.
C:He did some reading.
一只雌猫一次产了三只小猫,这三只小猫在毛色上不完全相同,则说明物体具有( )
被称为“国际石油海峡”(油阀)的是( )
下列关于隋文帝的叙述,不正确的是( )