Which of the following best states the central idea of the passage?
A. China's rail and metro systems have experienced rapid growth from backwardness, and today they greatly help to relieve the pressure of an increasingly large number of travelers due to the rapid economic growth.
B. China's rail and metro systems have experienced rapid growth from backwardness, and today, they boast the highly sophisticated computerized services and the world's most extensive high-speed rail network.
China's rail and metro systems have experienced rapid growth from backwardness, and today they are playing a vital role in the new period of the great rejuvenation of the Chinese nation.
D. China's rail and metro systems have experienced rapid growth from backwardness, and today they serve as the foundation of the continual development within our national transportation sector.
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According to the passage, which of the following conditions is the ultimate cause for the beginning of rail service development in China in the late 20th century?
A. Vey basic rail network.
B. People' s limited disposable income.
C. National economic development policy.
D. More people migrating and moving to other towns and cities.
According to the passage, the experiences of buying tickets in Guangzhou in 1992 suggest that the author would most probably agree with which of the following statements？
A. There should be a special window at the railway station dedicated for foreigner visitors nowadays.
B. All the service staff at the rail station should be able to speak English in today's China.
C. Foreign visitors should be given special help when they have difficulty buying a sleeper ticket.
D. Sophisticated computerization helps in providing a pleasant experience and efficient service.
Compared with the outdated railway station layout in the 1990s, which of the following statements does not represent the characteristics of the modern design of high-speed rails in China?
A. being able to manage a huge volume of passenger flow
B. much-enlarged waiting room with a larger capacity for passengers
C. being able to provide much improved services
D. new stations being opened in China with the main purpose of taking pressure off the outdated terminals
Comparing the rail network that China has today with before the mid-2000s, it can be inferred that one fact about the network service is ________.
A. travelling on rail was much more time-consuming than it is today
B. there were more freight services on rail than there are today
C. it was the dedicated tracks that improved the level of travel comfort
D. today the working capacity of the rail network has not reached its maximum
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