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

 

B

look back在這里是“回顧”的意思,turn back有“轉(zhuǎn)身”的意思,因此B為最佳答案。C沒有相關(guān)表達(dá);move back表示“搬回”的意思,不符合句子的意思。

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科目:高中英語 來源: 題型:054

There have been many great inventions, which have changed the way we live. The first great invention was    1     that is still very important today—the wheel(輪子). This made it easier to    2     heavy things and to travel long distances.

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2. A. carry           B. bring      C. find       D. put

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