标题: grammar question, thanks a lot for your help!!!! [打印本页] 作者: iamdurant 时间: 2011-5-23 14:06 标题: grammar question, thanks a lot for your help!!!! Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.
A.with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.
B.with atmospheric water vapor producing highly corrosive sulfuric and nitric acids.
C.andatmospheric water vapor which has produced highly corrosive sulfuric and nitric acids.
D.and atmospheric water vapor which have produced highly corrosive sulfuric and nitric acids.
E.andatmospheric water vapor to produce highly corrosive sulfuric and nitric acids.