2011英语四级考试仔细阅读练习(2)(4)

C) they should slow down their speed

D) they are approaching the speed limit

28. The advantage of chevrons over straight, horizontal bars is that the former ________.

A) can keep drivers awake

B) can cut road accidents in half

C) will have a longer effect on drivers

D) will look more attractive

29. The American Automobile Association Foundation for Traffic Safety plans to ________.

A) try out the Japanese method in certain areas

B) change the road signs across the country

C) replace straight, horizontal bars with chevrons

D) repeat the Japanese road patterns

30. What does the author say about straight, horizontal bars painted across roads?

A) They are falling out of use in the United States.

B) They tend to be ignored by drivers in a short period of time.

C) They are applicable only on broad roads.

D) They cannot be applied successfully to traffic circles.

Passage Three

Questions 31 to 35 are based on the following passage.

Amtrak (美国铁路客运公司) was experiencing a downswing in ridership (客运量) along the lines comprising its rail system. Of major concern to Amtrak and its advertising agency DDB Needham, were the long-distance western routes where ridership had been declining significantly.] At one time, trains were the only practical way to cross the vast areas of the west. Trains were fast, very luxurious, and quite convenient compared to other forms of transportation