Carbon dioxide(CO2)_______ from burning fuels is the most common of the so-called greenhouse gases.


  1. A.
    producing
  2. B.
    having been produced
  3. C.
    to be produced
  4. D.
    produced
D
試題分析:句意:由于燃燒燃料而產(chǎn)生了的二氧化碳是最常見的被稱為溫室效應(yīng)氣體。整個句子的謂語動詞是is,所以空格處是非謂語動詞,carbon dioxide與produce之間是被動關(guān)系,故用過去分詞,這里不強調(diào)produce發(fā)生的動作的時間的先后,故選D。
考點:考查非謂語動詞的用法。
點評:本題難度適中。不容置疑,高考將繼續(xù)加強對非謂語動詞的考查,試題的特征將繼續(xù)呈現(xiàn)出“情景化”和“設(shè)問角度的多樣化”的趨勢,但試題的難度將會有所控制。
即學(xué)即練:_________ what would happen, none of them could find a way out.
A. Having left wondering                 B. Leaving to wonder
C. Having left to wonder                 D. Left wondering
解析:D。考查非謂語動詞的邏輯主語,由于none of them作leave的邏輯主語,它們之間形成被動關(guān)系,故選D項,其他幾項都是主動形式。
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