题目选项分析

The first shinkansen, or bullet train, which was built in time for the first Tokyo Olympics, reduced

the travel time between Tokyo and Osaka from 6 hours and 40 minutes to just 4 hours

The first shinkansen, or bullet train, which was built in time for the first Tokyo Olympics, reduced

the time being required to travel from Tokyo to Osaka, from 6 hours and 40 minutes down to just 4 hours