__________(要不是有计算机), there would not have been man-made satellites or rockets.Bu

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问题 __________(要不是有计算机), there would not have been man-made satellites or rockets.

选项

答案 But that there were computers

解析考查点：虚拟语气中“要不是”的表达方式是but that；此处条件状语从句表示的是和现在相反的虚拟，故用一般过去时。

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