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If we , we can realize the progress we have made in space research. A. turn back

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If we , we can realize the progress we have made in space research. A. turn back

If we_________, we can realize the progress we have made in space research.

A. turn back         B. look back   C. answer back       D. move back

试题答案

B

解析:

look back在这里是“回顾”的意思,turn back有“转身”的意思,因此B为最佳答案。C没有相关表达;move back表示“搬回”的意思,不符合句子的意思。