2. 外语
  3. Traffic Jams—No End in Sight 1. Traffic congestion(拥堵)affects people throughout the world. Traffic jams cause smog in dozens

Traffic Jams—No End in Sight 1. Traffic congestion(拥堵)affects people throughout the world. Traffic jams cause smog in dozens

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问题                 Traffic Jams—No End in Sight
    1. Traffic congestion(拥堵)affects people throughout the world. Traffic jams cause smog in dozens of cities across both the developed and developing world. In the U. S. , commuters(通勤人员)spend an average of a full working week each year sitting in traffic jams, 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 centres thanks to congestion pricing.
    3. Another way to reduce rush-hour traffic is for employers to implement flextime, which lets employees travel to and from work at off-peak traffic times to avoid the rush hour. Those who have to travel during busy times can do their part by sharing cars. Employers can also allow more staff to tele-commute(work from home)so as to keep more cars off the road altogether.
    4. Some urban planners still believe that the best way to ease traffic congestion is to build more roads, especially roads that can take drivers around or over crowded city streets. But such techniques do not really keep cars off the road; they only accommodate more of them.
    5. Other, more forward-thinking, planners know that more and more drivers and cars are taking to the roads every day, and they are unwilling to encourage more private automobiles when public transport is so much better both for people and the environment. For this reason, the American government has decided to spend some $ 7 billion on helping to increase capacity on public-transport systems and upgrade them with more efficient technologies. But environmentalists complain that such funding is tiny compared with the $ 50 billion being spent on roads and bridges.
A. Paying to get in
B. Changing work practice
C. Not doing enough
D. A solution which is no solution
E. Closing city centres to traffic
F. A global problem
Paragraph 1______
选项
答案F
解析 文章第一段第一句是主题句．意为：交通拥堵影响着世界各地的人们。该段后面的内容则用具体的例子证明了这一点。F项A global problem(一个全球性问题)与主题句意思相符，故选F。
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