About 90 percent of the equipment presented by the administration，as well as the facilities of our own，       made good use of in teaching．

    A．have    B．has    C．have been    D．has been

D


解析:

本句的主語是About 90 percent of the equipment，所以謂語動詞應該用單數(shù)形式。又因為謂語動詞和主語之間是動賓關系，所要用被動語態(tài)。

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