物理学中引入“质点”概念,从科学方法来说,是属于( )
A:观察、实验的方法
B:建立理想模型的方法
C:类比的方法
D:逻辑推力的方法
目前人类所能观测到的宇宙范围是( )
- You aren't supposed to smoke in public. It's bad for our health.
- Sorry, I will ______ my cigarette right now.
— Is the gray shirt Mr. Zhou's?
— I it is his. His is white.