第一部分 英语知识运用（共两节，满分50 分）
一、单项填空（共 20 小题：每小题1分，满分20分）
1. ------ He is twenty years younger than you .
-------_______________.
A. What for B. How come C. So what D. Why not
2. His wife gave _____ birth to a baby son yesterday , which gave him _________ great pleasure .
A. / ; a B. the ; the C. / ; / D. a ; a
