19．A great amount of information have been used．

分析 大量的信息已經(jīng)被應(yīng)用．

解答 1．have改成has；考查主謂一致，information是不可數(shù)名詞，謂語(yǔ)動(dòng)詞要用單數(shù)形式．

點(diǎn)評(píng) 本題考查基本知識(shí)，平時(shí)學(xué)習(xí)中考生應(yīng)加強(qiáng)基礎(chǔ)知識(shí)的應(yīng)用和積累．

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