23. - When shall we go planting trees in the hill?

-______ it begins to rain, so they don’t need watering.

　 A. Not until　　　　　 B. While　　　　　　　　 C. Till　　　　　　　　　 D. Unless

22. World Expo 2010 Shanghai China, a grand-scale global event, has ______ the significant theme “Better City, Better Life.”

A. abandoned　 　　 B. adopted　 　　　　　 C. advocated　 　　 D. adapted

第一节　 单项选择(共20小题，每小题0.5分，满分10分)

21. ______ man may usually be known by the books he reads as well as by ______ company he keeps.

A. The; a 　　　　　　 　B. A; a　 　　　　　　 C. The; the　 　　　　 D. A; the