B. Garbage sorting and recycling is your development direction, and landfill is not your development direction, so B is wrong;

C. Using cellulose and starch as raw materials to make your biodegradable plastics can control "white pollution", so C is correct;

D, adding a proper amount of limestone into coal, when limestone burns with coal, the reaction between you under S 2 and you under air 2 is generated, and CaS under 4 and C under 2 are generated, which reduces the discharge of you under S 2 and the pollution to the atmosphere, so D is correct;

Therefore: b;