分子和原子的本质区别是[ ]
A．质量和体积的大小
B．运动形式和间隔的远近
C．能否保持物质的化学性质
D．在化学反应中能否再分
答案：D
I want _____________ my camera. [ ]
A. take
B. to take
C. taking
This chair is black and that is orange chair.
A．a; /
B．/; a
C．a; a
D．/ ; an
