题目内容：

The new high-speed railway line between Urumqi, capital of the Xinjiang Uygur self-governing region, and Lanzhou, capital of Gansu province, has cut train travel time by half to less than 12 hours.

The dramatic improvement will benefit many families planning reunions for Spring Festival.

"For the first time, I feel home is not that far away after all," said Liang Shaofu as he boarded a high-speed train in Urumqi with six members of his family.

The 35-year-old left Lanzhou to set up a dry fruit business in Xinjiang eight years ago, and he has now settled in Urumqi.

The 1,776-km line, which passes through Qinghai province and is the country's first high-speed railway to be built in a high-altitude region, came into service on Dec 26.

"We normally drive home for Spring Festival to avoid the difficulties of buying seven train tickets for the whole family during the peak season," Liang said．"Driving can be very tiring and dangerous sometimes, so one year we even decided not to go back to Lanzhou simply to avoid the trip.

More than 600,000 passengers traveled on the line during its first month, and the Urumqi Railway Bureau said the introduction of high-speed services will ease transport pressure during the Spring Festival peak season.

The existing usual railway line could no longer support Xinjiang's development．All passenger trains will gradually shift to the new link, leaving the old one to be used for goods．As a result, Xinjiang's annual goods ability could reach 200 million metric tons from the current 70 million.

The line passes through areas that experience high winds, and it also crosses parts of the deserted Qinghai-Tibet Plateau and the bone-dry sands of the Gobi Desert.

The project could help China to promote its high-speed railway technology abroad, said Ma Xizhang, director of the Lanzhou-Xinjiang railway project's management department in Xinjiang.

1.How long did it take to go from Urumqi to Lanzhou by the usual train before?

A．about 12 hours.

B．About 6 hours．

C．About 18 hours．

D．About 24 hours.

2.What’s the main advantage of the new high-speed railway?

A．It takes more time to go to Urumqi to Lanzhou.

B．It will be more convenient for people all over the country to Xinjiang.

C．All the people in Lanzhou can return home on festivals.

D．It helps to improve Xinjiang’s development.

3.From the passage we can learn _______.

A．Xinjiang’s annual goods ability can increase nearly four times

B．the new railway technology may help more railway lines to be built abroad

C．the high-speed railway lines can’t be built across the bone-dry sands

D．the old railway lines can only carry goods now

4.Which of the following is true according to the passage?

A．The new high-speed railway line is good for all people to go home．

B．The new high-speed railway line benefits businessmen to carry goods.

C．Taking the new train is safer than driving home from Urumqi to Lanzhou.

D．Businessmen seldom went home for Spring Festival before.