sc 1000

[lawalx]

56. 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) and atmospheric water vapor which has produced highly corrosive sulfuric and nitric acids
(D) and atmospheric water vapor which have produced sulfuric and nitric acids which are highly corrosive
(E) and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

[ranji]

idiom is 'between X and Y' and 'result from'

X - industrial emissions of SO2 and NO
Y - atmospheric water vapour

So A and B are wrong.

C) which is used without a comma
D) same as D
E) correct

OA pls!

[lawalx]

OA - E

thanx again

[Danielle]

I'd also like to point out that C and D use 'has and have produced" respectively, which must be wrong. It would be "reaction between X and Y to produce Z".