下列属于大气自净作用的是()
A.被植物吸收
B.污染物进入大气环流
C.降落到地面又被风吹起再次进入大气
D.转变成二次污染物
E.污染物上升至平流层
参考答案:A
At the meeting, Doctor Li thought of lots of ways to solve the air pollution.[ ]
A. paid attention to
B. put up with
C. catch up with
D. came up with
企业价值评估的目的之一是寻找被低估的企业,也就是价值低于价格的企业。()