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
单项选择题According to the author ()
A.Washington's lack of formal education placed him at a disadvantage in later life B.Washington should have gone to France even though be could not speak French C.Washington was not as good as a president as Adams, Jefferson or Madison D.Washington was a model for all Virginian gentlemen
单项选择题Bicycle lanes (Line 2, Para.3) probably means ()
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