完形填空。阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
Thanks to a combination of young businessmen, large numbers of university students and revitalization(新生) efforts by the local and national governments, today's Nanjing has an __1__ of youthful exuberance(繁茂) that would have been __2__ only a few decades ago. __3__， the city, a booming city of 6.5 million on the banks of the Yangtze River some 185 miles west of Shanghai, bears __4__ resemblance to the former capital of China that suffered the worst cruelty and violence of World War II.
__5__ Nanjing has shown a remarkable capacity for reinvention during its 2500year history. And in recent years, the city has moved __6__ its tragic past to become a vital engine of China's economic growth, thanks __7__ to its position in the middle of China's prosperous eastern seaboard. Growth has also __8__ thanks to improved ground transportation: A new bullet train linking Nanjing and Shanghai started service last year, __9__ travel time between the cities from several hours to just 75 minutes, and a BeijingShanghai highspeed line is __10__ to open later this year, with a stop in Nanjing. Within the city, two metro lines were built in the last few years; 15 more are planned to begin service by 2030.
