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Since the Third Plenary Session in 1978, the railway electrification process had accelerated slowly.
Since the Third Plenary Session in 1978, the railway electrification process had accelerated slowly.
A.正确
B.错误
正确答案：错误
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中外铁路文化之旅
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Before 1949, there were about 23,500 kilometers railway constructed and were all in service.