阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
For more than nine days，for more than 60 miles，thousands of Beijingbound vehicles have come to an almost total stop on highways called the 6 and 110 that run from Inner Mongolia southeast to the nation's capital.
Bai Xiaolong，a 30yearold truck driver，says it took him five days to make the 350mile journey from Inner Mongolia to Tianjin.He spent much of that time reading，textmessaging and sleeping rather than speeding up.
“There was one day that I didn't move，not even an inch，”said Bai，an inhabitant of Jining in Inner Mongolia，a city at the western end of the traffic jam.
Chinese officials said that the congestion is mainly because of the maintenance(维护)projects that began in midAugust and are scheduled to be completed in midSeptember.Trucks carrying 8 tons or more of coal or fruit have been responsible for damaging the roadway，thus making the work necessary.
Drivers who often use the route know that heavy traffic has long been a fact of life.“The problem is really that there're too many cars and trucks and not enough lanes(车道)，”Bai said.“We drivers are used to this sort of thing happening.”
