单项选择题
A.Traffic Crowding in New York City B.Air Pollution in New York City by Cars C.Special Lanes for Passengers D.A Solution to Traffic Problems in New York
A.the city government B.some bike riders C.people living far from downtown D.some store owners
A.narrow passages in between buildings for bicycles B.roads full of bicycles C.special parts of the road for bicycle riders only D.roads for bicycles only