单项选择题

According to Larson, to redress the traffic problem, ______.

A．car pooling must be studied
B．rapid mass transit system must be introduced
C．flexible work hours must be experimented
D．overall strategies must be coordinated

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单项选择题

According to the passage, the smart-highway technology is aimed to ______.

A．develop sophisticated facilities on the interstate highways
B．provide passenger vehicle with a variety of services
C．optimize the highway capabilities
D．improve communication between driver and the traffic monitors

单项选择题

What is the appropriate title for the passage

A．Smart Highway Projects The Ultimate Solution to Traffic Congestion.
B．A Quick Fix Solution for the Traffic Problems.
C．A Venture to Remedy Traffic Woes.
D．Highways Get Smart——Part of the Package to Relieve Traffic Gridlock.