Once the economic and social usefulness of ehw motoe car was demosteates and with its superiority to the horse being proved, much of the early hostility to it in rural regions disappeared. A and with its superiority to the horse being B ans its superiority over the horse had been C and its superiority to the horse D its superiority over the horse E with its superiority to the horse having been answer B 我认为B中的过去完成时用的没有道理,是绝对错误 这道题应当 选C 虽然不对称，但优于b | 
