PM2.5是指大气中直径小于或等于2.5×10﹣3毫米的颗粒物,也称为可入肺颗粒物,把2.5×10﹣3用小数形式表示正确的是( )
A:0.000025
B:0.00025
C:0.0025
D:0.025
热带草原面积最大的洲是 ( )
----The new street is so clean. _______ the way, do you enjoy living here? ----Of course I do. Life has become much better _______ many ways.