举一反三
- High-speed trains often require A: large distances B: advance reservation C: comfortable seats D: tickets
- 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
- High-speed trains are generally operated on dedicated lines__1__.
- There are three categories of China’s high speed trains, G, D, and C, and D travels at a speed of______. A: 416 kmph B: 350 kmph C: 250 kmph D: 200 kmph
- At 01:00, high-speed trains move into the service shop for "______"
内容
- 0
The speed of high-speed train is over ( ).
- 1
Which of the following is NOT the advantage of high-speed rail? A: It can travel at a higher rate of speed. B: It often uses a dedicated line, fewer stops are made along the line. C: The high-speed railtracks make travel smoother than on normal tracks. D: Building special tracks for high-speed trains cancost a lot of money.
- 2
What are the reasons for people to choose high-speed rail? A: convenient ticket purchasing B: fast running speed C: high punctuality rate D: effortless transfer
- 3
High-speed trains are generally operated on _____ lines. A: dedicated B: existing
- 4
The main factors which affect the pressure wave when two high-speed trains meet: A: The speed of the meeting trains B: The streamline degree of train C: Line spacing D: Train marshalling form E: Train power distribution form F: Train traction power supply mode