19（）
A: in order
B: on track
C: in line
D: on target
A: in order
B: on track
C: in line
D: on target
举一反三
- Choose the correct word for the definition:A track used exclusively for a high-speed train. A: existing line B: dedicated line C: special track
- A _______ line is a track used exclusively for a high-speed train. A: train B: track C: welded D: dedicated
- dedicated line A: a track for exclusive use B: a track already being used
- A．lineB．laneC．trackD．path A: line B: lane C: track D: path
- The high-speed train runs exclusively on a(n) _____________. A: dedicated line B: existing line C: special track D: continuous welded rail