第二部分：英语知识应用(共两节，45分)
第一节：单项填空（共15小题，满分15分）
21. In face of _____ failure, it is the most important to keep_____ good state of mind.
A. / ; a B. a ; / C. the ; / D. / ; the
22. _____ our food ______, we had to walk to a village for help.
A .Since; runs out B. Because; run out
C. With; running out D. For; running out
