江苏省2014届高三英语（牛津版）一轮复习攻略训练：单项填空（17）
认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
21. Although he knew ________little about ______large amount of work done in the field, he succeeded where more well-informed experimenters failed.
A. a; the B. 不填；the C. a; 不填 D. the; a
22. --- I promise to go shopping with you if you help me with the housework.
--- ______ You are the last person to keep a promise.
A. That's great! B. How come? C. I don't agree. D. Come off it!
23. People hope to become more ______ in predicting earthquakes.
A. absolute B. steady C. ideal D. accurate
24. _________ you told me in secret, I had heard nothing about it.
A. While B. Until C. After D. Since
25. Student loan is supposed to provide financial support for people who would ______ not be able to go to college.
A. otherwise B. meanwhile C. therefore D. nevertheless
