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2017年高考英语二轮专题复习命题预测69 单项填空 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 | 
