以下为 8/29/2014 变题后最新机经 demo
逻辑 demo:
Question:
In the 1960s, mathematician Dietrich Braess observed that adding
a new route to a congested traffic grid can often increase drivers’
average travel times. A bottlenecking effect in adjoining streets
tends to occur as many drivers cluster together to take advantage
of the new route. This suggests that when one or more roads in a
grid are closed off, __________.
Which of the following most logically completes the passage?
A. some drivers take longer than before to reach their destinations.
B. average travel times for drivers in the grid sometimes decrease
as a result .
C. most drivers choose the road commonly regarded as the second best
alternative.
D. some drivers eventually no longer use that grid if they change
jobs and work in a different location.
E. drivers are compelled to take the roads that carry the heaviest
loads of traffic .
Answer:
翻译 :
1960s时期，数学家谁谁观察发现在拥堵的交通网络上增加一条新的路线反而
会使得司机在路上的时间增加。因为很多司机为了利用新的路线而聚在一起，
这时毗邻街道的瓶颈效应就发生了。这表明一旦关闭交通网格中一条或多条路
线，_________
下面哪个选项最能lohgically完成文章？
A. 一些司机在到达目的地之前需要花去更多的时间。
B. 在路上花去的时间也相对有所下降。
C. 大多数司机都会选择同一条备用路线。
D. 如果司机更换的工作就再也不会使用到那套交通路线。
E. 司机们都被迫使用交通最繁忙的那些路线。
Answer: