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  3. Without electronic computers , much of today’s advanced technology ______.

Without electronic computers , much of today’s advanced technology ______.

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问题 Without electronic computers , much of today’s advanced technology ______.
选项 A、will not have been achieved
B、have not been achieved
C、would not have been achieved
D、had not been achieved
答案C
解析 介词型虚拟语气。后半句的模式套用“if非真实条件句中的主句模板”。句意为：若没有电脑，很多当今的先进技术当时都无法实现。所以套用的是“与过去事实相反”的那种主句模板。
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