第二部分英语知识运用（共两节，满分45分）
第一节 单项填空，从A、B、C、D四个选项中选出可以填入空白处的最佳选项（共15小题，每小题1分，满分15分）
21. Everything to do with ______ nature can have______ important part to play in the development of man.
A. the ; / B. a ; an. C. / ; an. D. the ; an
22. In big cities, some workers from the countryside have been tired of moving around and wish for a more ______ life.
A. settled. B. fluent C. calm D. fond
