Research has shown that ______. A: dropouts are substantially below Ph.D. s in financial attainment B: the incentive factor is a minor one in regard to pursuing Ph.D. studies C: the Ph. D: candidate is likely to change his field of specialization if he drops outD. about one-third of those who start Ph. D．work do not complete the work to earn the degree

This problem is too hard for me to ______. A: work at B: work on C: work out D: work in

Which of the following is NOT a common job requirement A: work at home B: work in an office C: work in a store D: work on the phone E: work in a closet

Work like a dog means ( ). A: work as you like B: work for making money C: work hard D: work without making money

She couldn’t the meaning of the poem. A: work out B: work C: work off D: work out of

The girl ______ was the best in the class was given a prize. A: which work B: whose work C: what work D: that work

The factors that affect the management range of entrepreneurial activities are ( ) A: Work ability B: Work conditions C: Work content D: Work nature E: Work environment

SQL中，用于提交和回滚事务的语句分别是（）。 A: END WORK和ROLLBACK WORK B: COMMIT WORK和ROLLBACK WORK C: SAVE WORK和ROLLUP WORK D: COMMIT WORK和ROLLUP WORK

13. Students should be encouraged to ________ different approaches to problems. A: work in B: work up C: work out D: work for

Without your help, I couldn"t ______the problem ______. A: work…at B: work…out C: work …on D: work…up