第二部分英语知识运用（共两节，满分45分）
第一节 语法和词汇知识运用（共15小题; 每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
11. The development of industry has been _______ gradual process throughout _______ human existence, from stone tools to modern technology.
A. 不填; the B. the; a C. a; 不填 D. a; a
12. Only _______ as an interpreter（口译者）______ how important it is to learn English well.
A. when did I work；I realized B. when I worked；I realized
C. when did I work；did I realize D. when I worked；did I realize
13. _______ to his research, the old professor has often to be reminded to have his dinner.
A. Having devoted B. Being devoted C. Devoting D. Devoted
14. There appeared a ________ look on her face on hearing the unexpected news.
A．worrying B．worried C．worry D．worries
