题目内容
Some cities have adopted Bus Rapid Transit, a system in which some features of the train, such as speed, reliability and comfort, are ______the bus system.
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The adverse weather conditions raised safety concerns, so they decided to_____ three flights ______a nearby airport.
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微信是一个社会化的（)，是强关系弱媒体平台，用户关系是这个网络的纽带。通常是真实的人际关系，属于移动的SNS.
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