The tracks of high-speed train must have a _______________________.
举一反三
- The tracks of high-speed train must have a ________ A: longer curve radius B: shorter curve radius C: thinner curve radius D: wider curve radius
- The speed of high-speed train is over ( ).
- The less expensive option of constructing special tracks for high-speed train is utilizing _____________ .
- 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.
- According to the passage, the speeds at which a train must travel to qualify as “high-speed”______________.