Anewtaxlaw,____theuseofsmallerenginesinvehiclesinvehiclestoreducepollutionandoil
dependence,isunderconsideration.
AencouragesBtoencourageCencouragedDencourage
应该用encouraging,通常不定式作目的状语不能有逗号隔开,为什么本题选B呢?