第二部分 英语知识运用 （共两节，满分35分）
第一节：语法和词汇知识（共15小题，每题1分，满分15分）
21. Taking a boat trip along the Yellow River is really exciting experience.
A. a B. \ C. the D. an
22. Hurry up! The train ______. You know it _____ at 8:30 am.
A. leaves, leaves B. is leaving, leaves
C. leaves, is leaving D. is leaving, is leaving
