61. It pays _____ to buy goods of high quality.

　　A. in the long run

　　B. in the short run

　　C. at a run

　　D. on the run

　　正确答案是

　　62. It seems oil _____ from this pipe for some time. We‘ll have to take the machine apart to put it right.

　　A. had leaked

　　B. is leaking

　　C. leaked

　　D. has been leaking

　　正确答案是

　　63. It was felt that he lacked the _____ to pursue a difficult task to the very end.

　　A. petition

　　B. engagement

　　C. commitment

　　D. qualification

　　正确答案是

　　64. It will be safer to walk the streets because people will not need to carry large amounts of cash； virtually all financial ______ will be conducted by computer.

　　A. transactions

　　B. transmissions

　　C. transitions

　　D. transformations

　　正确答案是

　　65. Jim is so _____ after injuring his leg that he has great difficulty in walking.

　　A. hurt

　　B. lame

　　C. wounded

　　D. uncomfortable

　　正确答案是

　　66. Jim isn‘t _____， but he did badly in the final exams last semester.

　　A. gloomy

　　B. dull

　　C. awkward

　　D. tedious

　　正确答案是

　　67. John D. Rockefeller， _______， owned 90 percent of all American oil refineries.

　　A. as still a young man

　　B. while still a young man

　　C. a young man however

　　D. in spite of a young man

　　正确答案是

　　68. John regretted ______ to the meeting last week.

　　A. not going

　　B. not to go

　　C. not having been going

　　D. not to be going

　　正确答案是

　　69. John seems a nice person. ______， I don‘t trust him.

　　A. Even though

　　B. Even so

　　C. Therefore

　　D. Though

　　正确答案是

　　70. Just as the builder skilled in the handling of his bricks， _____ the experienced writer is skilled in the handling of his words.

　　A. as

　　B. thus

　　C. so

　　D. like

　　正确答案是