I have been to quite a few museums, but I can say this one is _______.
A:good
B:the best
C:the better
D:better
关于x,y的二元一次方程2x+3y=18的正整数解的个数为( )
地震发生时,坐在大海中船舶里的人( )
“贞观之治”为唐朝的强盛奠定了坚实的基础。下面有关“贞观之治”出现的原因的叙述,不正确的是( )