To secure the smoothness of the traffic, the transportation is constantly ______

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问题 To secure the smoothness of the traffic, the transportation is constantly ___________ by computers.

选项 A、monitored
B、intrigued
C、safeguarded
D、nurtured

答案 A

解析计算机始终都在监测着交通状况以保证畅通无阻。本题是考查动词的词义辨析。monitor“操纵，监控”；intrigue“把……迷住”；safeguard“保护，维护”；nurture“养育”。

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