第二部分 英语知识运用(共两节, 满分45分)
第一节 单项填空(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。
21.［2012沧州模拟］_______ back, dropping out of that college was one of the best decisions Steve Jobs had ever made.
A. Looking B. To look
C. Being looked D. Having looked
22. —How about _______ Christmas evening party?
—I should say it was _______ success.
A. a；a B. the；a C. a；/ D. the；/
23. ［2012厦门模拟］The research mainly deals with the difficulty the students have _______ their attention on their study all the time.
A. to focus B. to be focused
C. focusing D. focused
24. Not having a good _______ of English can be a serious barrier to achieving your
