20. The number 2008 is a special number, ________ I think, that will be remembered by the Chinese forever.

A. which　　　　　 B. what　　　　 C. one　　　　　 D. it

19. China needs to strike a balance between maintaining a ______ fast and stable development and economic structural adjustment.

A. relatively　　　 　 B. seemingly 　　 C. approximately　　 D. environmentally