[填空题]The traffic jams are difficult problems in cities and along the approaches to cities at morning and evening rush hours.

[单项选择]Traffic Jams — No End in Sight 1. Traffic congestion affects people throughout the world. Traffic jamscause smog in dozens of cities across both the developed and developing world. In the U.S., commuters to spend an average of a full work week each year sitting in traffic, according to the Texas Transportation Institute. While alternative ways of getting around are available, most people still choose their cars because they are looking for convenience, comfort and privacy. 2. The most promising technique for reducing city traffic is called congestion pricing, whereby cities charge a toll to enter certain parts of town at certain times of day. In theory, if the toll is high enough, some drivers will cancel their trips or go by bus or train. And in practice it seems to work: Singapore, London and Stockholm have reduced traffic and pollution in city centers thanks to congestion pricing. 3. Another way to reduce rush hour traffic is for employers to implement flexitime, which lets emplo

[简答题]Because of the frequent occurrence of traffic jams in our city, there’s a growing tendency for people to travel to work by bicycle.