3.According to a news report,listening to loud music with mp3players ______ caused hearing loss in some teenagers.( 。
A.hasB.haveC.isD.are

分析 根據(jù)新報(bào)道,用MP3播放器聽喧鬧的音樂已經(jīng)對(duì)一些年輕人造成了聽覺損失.

解答 答案是A.考查主謂一致.句意是:根據(jù)新報(bào)道,用MP3播放器聽喧鬧的音樂已經(jīng)對(duì)一些年輕人造成了聽覺損失.句子主語是動(dòng)名詞短語listening to loud music with mp3players,謂語要用單數(shù)形式,排除B和D.根據(jù)空格后面的caused,可知句子是現(xiàn)在完成時(shí)態(tài),所以用單數(shù)形式的助動(dòng)詞has.故選A.

點(diǎn)評(píng) 解答此類題目首先掌握句意,然后分析句子主謂成分,根據(jù)相關(guān)語法選擇正確的答案.

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