What does the author say about straight horizontal bars painted across roads?A.They are s

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

A.They are suitable only on broad roads.

B.They are falling out of use in the United States.

C.They are ignored in a long period of time.

D.They cannot be used successfully to traffic circles.

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  • 正确答案:C
    语意释义题。第三段提到horizontalbars…initially…减少事故的发生,但是withinmonths…driversbecomeusedto。所以时间一久,就容易被司机忽视,即这些标记的警示效果不持久。