Without appropriate software, a computer______merely an empty box.

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问题 Without appropriate software, a computer______merely an empty box.

选项 A、would become
B、will become
C、would have become
D、had not become

答案A

解析根据句意并分析句子结构可知，本句中Without引出表示虚拟条件的成分，相当于If there were no appropriate software。根据句意可知，本句是对现在情况的假设，所以谓语动词应用“would+动词原形”的形式。故选A。

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