14．Technologyhas seen （see） some amazing developments in the last few decades．

分析 在過去的幾十年中技術(shù)見證一些令人驚奇的發(fā)展．

解答 答案是has seen．本題考查動詞時態(tài)；題干中in the last few decades表示"在過去的幾十年中"，是與現(xiàn)在相聯(lián)系的一段時間，與現(xiàn)在完成時連用，technology為抽象不可數(shù)名詞，做主語謂語動詞用單數(shù)；故答案是has seen．

點評 本題是要求用所給動詞的適當(dāng)時態(tài)填空，解題時要尋找題干中所提供的時態(tài)依據(jù)，同時關(guān)注特殊的時態(tài)結(jié)構(gòu)．

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