问答题

College Reading Room Phenomenon
1．描述图表中的两个循环(cycle)所反映的问题
2．分析引起该变化的原因
3．你的结论


(Sept: new term starts, Jan: vacation, June: exams, July: vacation)

【参考答案】

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College Rea......

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A．Workers on the platforms and trains were replaced by machines.B．A completely automatic line was added to its network.C．It became the first completely automatic railway in the world.D．Its trains became manual-controlled.
A．Workers on the platforms and trains were replaced by machines.
B．A completely automatic line was added to its network.
C．It became the first completely automatic railway in the world.
D．Its trains became manual-controlled.
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