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I think it _____ that she should be knowledgeable about computers for her present job.

A．urgent

B．normal

C．essential

D．temporary

試題分析：句意：我認為對于她目前的工作，她最基本的是，應該在電腦方面，具有淵博的知識。urgent緊急的 normal正常的 essential基本的 temporary暫時的，選C。

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