A:150°
B:130°
C:120°
D:100°
The____ (关系)between her parents are very good.
甲铁棒能吸引小磁针,乙铁棒能排斥小磁针,若甲、乙铁棒相互靠近,则两铁棒( )
下列一组标志所涉及的产业,最能体现第三次科技革命核心技术的是( )
A
B
C
D
This lift is very big and it can take 20 people____ ____ ____.