—Must I go there right now, mum?—No, you ____. You can go there tomorrow.
A:shouldn't
B:can't
C:mustn't
D:needn't
下列关于酵母菌的叙述,正确的是( )
鲁迅先生说过:“唯有民魂是值得宝贵的,唯有他发扬起来,中国才有真进步。”这句话说明了( )