What problems can bicycles bring?
A.Bicycles are more and more expensive. B.Riding bicycles is more dangerous than driving cars. C.There are no places for so many bicycles. D.Too many bicycles may cause traffic jams.正确答案D
What problems can bicycles bring?
A.Bicycles are more and more expensive. B.Riding bicycles is more dangerous than driving cars. C.There are no places for so many bicycles. D.Too many bicycles may cause traffic jams.正确答案D
