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(dòng)詞時(shí)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(shí)間，與現(xiàn)在完成時(shí)連用，technology為抽象不可數(shù)名詞，做主語謂語動(dòng)詞用單數(shù)；故答案是has seen．

點(diǎn)評(píng) 本題是要求用所給動(dòng)詞的適當(dāng)時(shí)態(tài)填空，解題時(shí)要尋找題干中所提供的時(shí)態(tài)依據(jù)，同時(shí)關(guān)注特殊的時(shí)態(tài)結(jié)構(gòu)．

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