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单选题
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
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参考解析
解析：
细节题。第二段首先指出smart-highway的目标是使交通系统有效运作，随后又指出现代化设备可用于该系统，to improve communication between drivers and the people who monitor traffic，据此可判断选项D正确。
细节题。第二段首先指出smart-highway的目标是使交通系统有效运作，随后又指出现代化设备可用于该系统，to improve communication between drivers and the people who monitor traffic，据此可判断选项D正确。
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