题目选项分析

Kudzu, an Asian vine that has grown rampant in the southern United States since it was introduced in the 1920s to thwart soil erosion, has overrun many houses and countless acres of roadside.

Kudzu, an Asian vine that has grown rampantly in the southern United States, since it was introduced in the 1920s for thwarting soil erosion, has overrun many houses and countless acres of roadside.