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

A．producing                             B．having been produced

C．to be produced                         D．produced

 

【答案】

D

【解析】

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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