23. We have taken all the ____ we can against the painting being stolen. A. precautions B. admissions C. concessions D. transactionsprecaution 预防措施，警...
24. The ____man would go his own way, in spite of all warnings. A. obedient B. obstinate C. digital D. elaborate obedient 顺从的，服从的obey 服从digital 数字的，爪...
25. Some flowers, like roses, are famous for their strong ______. A. fragrance B. flavor C. demon D. outline<fragrance>delirious 神志不清的delicious...
26. The amateur team was _____from the contest in the first round. A. detached B. excused C. eliminated D. distracted detach 派遣relic 遗弃物eliminate 排除，...
27. He is planning another tour abroad, yet his passport will_____ at the end of this month. A. expire B. exceed C. terminate D. ceaseexpire 过期，断气gen...
28. All the off __shore oil explorers were in high spirits as they read _____letters from their families. A. sentimental B. affectionate C. intimate D...
29. Please _____yourself from smoking and spitting in public places, since the law forbids them. A. restrain B. hinder C. restrict D. prohibit restrai...
30. The elderly Russians find it hard to live on their state____. A. pensions B. earnings C. salaries D. donations donation 捐款generous 慷慨的colony 侨民，殖...
UNIT 51. Important people don't often have much free time as their work____all her time. A. takes away B. takes over C. takes in D. takes up<t...
2. The braches could hardly_____ the weight of fruit. A. retain B. sustain C. maintain D. remain <sustain>contain 包含，包容detain 阻拦，拘留retain 保留，维持...