题目内容
Since the Third Plenary Session in 1978, the railway electrification process had accelerated slowly（）
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A key railway development plan in China was the approval in_of a Medium- and Long-Term Railway Plan （MLTRP） covering freight and passenger network development to 2020（）
By 2005, China’s network had become the biggest passenger carrier, generating about______ percent of the world’s passenger traffic（）
By 1990, despite the network having increased to______ kilometers（）
In Japan, the ______ is the first network of high-speed railway lines in the world（）
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