According to the passage, the speeds at which a train must travel to qualify as “high-speed”______________.
A: has the same standard
B: is above 250 km/h
C: vary from country to country
D: was set in 1990
A: has the same standard
B: is above 250 km/h
C: vary from country to country
D: was set in 1990
举一反三
- The speeds at which a train must travel to quality as “high-speed” vary form country to country, ranging from _______ km/h to over ________ km/h.
- According to the passage, the speeds at which a train must travel to qualify as “high-speed”______________.
- High –speed rail is public transport by rail at speeds in excess of ________ km/h.
- According to the passage, “CIO” must refer to someone who has a high status in a company.
- Which of the following is a possible cause of the event "the high speed train is underdeveloped in the US"? A: Americans don't like the high speed train. B: Highway network is advanced. C: The geography is unsuitable for the high speed train. D: The high speed train damages environment.