题目内容:
Research has shown that ____________.
A.dropouts ale substantially below Ps in financial attainment B.the incentive factor is a minor one in regard to pursuing Pstudies
C.the Pcandidate is likely to change his field of specialization if he drops out
D.about onthird of those who start Pwork do not complete the work to earn the degree
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答案解析: