21. The prisoner was ______ of his civil liberty for three years.
A) discharged
B) derived
C) deprived
D) dispatched
22. Small farms and the lack of modern technology have ______ agricultural production.
A) blundered
B) tangled
C) bewildered
D) hampered
23. The Japanese scientists have found that scents ______ efficiency and reduce stress among office workers.
A) enhance
B) amplilf
C) foster
D) magnify
24. All the students have to ______to the rules and regulations of the school.
A) confirm
B) confront
C) confine
D) conform
　25. He ______ his head, wondering how to solve the problem.
A) scrapped
B) screwed
C) scraped
D) scratched
　21. C 参考译文：那个罪犯被剥夺了三年的公民自由权。
A) discharge 释放
B) derive 派生
C) deprive 迷惑
D) dispatch 派遣
22. D 参考译文：农场规模小和现代技术的缺乏束缚了农业生产。
A) blunder 做错，办错
B) tangle 使陷入
C) bewilder 迷惑
D) hamper 阻碍
23. A 参考译文：日本科学家已经发现，香味能提高办公室工作人员的工作效率能减缓压力。
A) enhance 提高
B) amplify 扩大
C) foster 培养
D) magnify 放大
24. D 参考译文：所有学生都必须遵守校纪校规。
A) confirm 确定
B) confront 对抗
C) confine 限制
D) conform 遵循

25. D 参考译文：他挠着脑袋，思索着如何解决这个问题。
A) scrap 打斗
B) screw 旋，拧
C) scrap 刮擦
D) scratch 抓、擦