题目内容
E-tickets will be used for high-speed trains ________ the country in 2019. Passengers can enter the station by simply using their ID card.
A. beside B. before C. across D. for
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题目内容
E-tickets will be used for high-speed trains ________ the country in 2019. Passengers can enter the station by simply using their ID card.
A. beside B. before C. across D. for