[A] accidentally [B] aggression [C] ambitious [D] commuters [E] conflict

[F] enabled [G] estimates [H] facilities [I] nuisances [J] owners

[K] promoting [L] propelling [M] regularly [N] strengthened [O] suspicious

There’s a battle raging in the streets of America. Anyone who【C1】________rides a bicycle knows all about this.

Some motorists have declared war on bikes as annoying【C2】_____that lead to slow traffic. They honk (鸣笛), shout or curse at two-wheeled travelers. A few will do even worse. The New York Times reports that incidents of【C3】_____toward bicycle riders appear to be growing, as bike riders take to the streets in order to save gas and money and fight global warming.

In Denver, nearly 11000 first-time bike【C4】_____turned out for Bike to Work Day. The bicycle group Transportation Alternatives【C5】_____that the number of New Yorkers who cycle daily has risen by 77 percent since 2000.

Even though virtually every state grants bicyclists the same rights (and responsibilities) as motorists to use the streets, many drivers still refuse to accept this. They view themselves as Kings of the Road—an impression that has been strongly【C6】_____by the transportation planning profession, which has designed our cities and suburbs as if people did not exist outside of their cars. But a big new idea to settle this【C7】_____and improve life in the streets for everyone is now taking root among community activists, urban planners and traffic engineers.

“Now, in communities across the country, a movement is growing to complete the streets. States, cities and towns are asking their planners, engineers and designers to build road networks that welcome all citizens,” declares the website of a new organization【C8】_____this idea. Complete the Streets—an【C9】__program of adding bike lanes, pedestrian【C10】_____and traffic-calming measures—is the best idea to hit our communities since pizza, or even the bicycle itself.

【C8】