第一部分：英语知识运用（共两节, 满分30分）
第一节：单项填空（共20小题，每小题0.5分，满分10分）
从每题所给A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. Most people prefer to travel by train，because you can have a comfortable journey，but make sure you get fast one．
A．the；a B．a；the C．不填；the D．不填；a
2. _____ I could express my thanks to the traveler, he had already disappeared in the rain.
A. Before B. When C. Until D. While
