Question

【题目】Now that the problem ________, appropriate action can be taken, and final success will be seen.

A. is identified B. was identified

C. has been identified D. had been identified

Answer 1

【答案】C

【解析】句意：既然问题已经被鉴别，就应该采取合适的行动，也会看到最后的结果。根据语境和句意，这里用现在完成时的被动语态，故选C。