题目是:Though less obviously visible, termites do significantly more damage to homes than branches from trees.
RON说这句子是错的,因为有歧义,可以理解为:白蚁对房子的伤害比白蚁对树枝的伤害更大,或:白蚁对房子的伤害比树枝对房子的伤害更大,所以要补出do, 消除歧义,改为 Though less obviously visible, termites do significantly more damage to homes than do branches from trees.