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    精英家教网 > 高中英语 > 题目详情
    When first ________ to the market, the computer software ． was not a success due to its complexity in operation.
    A．introducingB．being introducedC．introducedD．to be introduced
    C
    考查非谓语动词。Introduce与the computer software为为动宾关系故用过去分词作状语。句意：电脑软件初次引进市场是由于操作复杂没有成功。
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