- He is never late for school.
- ______. His teacher is angry with him.
A:Yes, he is.
B:Yes, he isn't.
C:No, he isn't.
D:No, he is.
一汽车在水平公路上行驶,设汽车在行驶过程中所受阻力不变.汽车的发动机始终以额定功率输出,关于牵引力和汽车速度的下列说法中正确的是( )
作为当代的中学生,在感受经济生活巨大变化的同时,也应了解我国的基本经济制度。下列关于我国基本经济制度的说法正确的是( )。