The main idea of this passage is how to （）

单项选择题Which of the following is NOT TRUE according to the passage（）

A．Bike for a Better City members ride bicycles to work.
B．Sometimes accidents may occur when cars and bikes are on the same lines,
C．The Central Park is situated in the downtown section of New York.
D．In some cities many people use bikes as they have special lanes.

单项选择题According to the passage, bicycles（）

A．are more convenient than cars
B．are safer traffic tools than cars
C．are ridden by most people in U.S.
D．are the solution to some city problems