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(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21.Our hiking last week was unusual and exciting experience and the terrible storm
made it real adventure．
A. the；a B．／；the C．an；the D. an；a
22.“Darwin teaches us that life continually to keeping up with a changing
Earth，”the expert explained．
A. is；adapting B．has；adapted C．will；adapt D. does：adapt
