High-speed trains are generally operated on dedicated lines__1__.
举一反三
- High-speed trains are generally operated on _____ lines. A: dedicated B: existing
- The less expensive option of constructing special tracks for high-speed train is utilizing __________ . A: dedicated lines B: existing lines C: specail lines D: continuous welded rails
- What do we learn about the first of the Chinese high-speed trains? A: It operated at the top speed of 200km/h. B: It rolled off the assembly line in 2007. C: It ran for the distance about 3,000km. D: It was designed for the mild winter.
- in japan the is the first network of high speed railway lines in the world
- High-speed trains travel at 300 kilometers an hour, which is about __________ normal trains. A: four times the speed as B: the speed four times of C: four times as the speed of D: four times the speed of