19.With the help of computers,people will find it easier to keep the traffic            smoothly.(  )
A.to runB.runC.runningD.D、

分析 在計算機的幫助下,人們將發(fā)現(xiàn)保持交通順暢運行會更容易.

解答 答案:C
聯(lián)系語境,根據(jù)關(guān)鍵詞keep并結(jié)合選項,可知這里應該用keep的固定表達keep doing sth去完成,意為一直做某事,在本句中的意思為使交通一直保持順暢的運行中.所以此處應用run的動名詞形式為running.故選C.

點評 此題考查動名詞的用法.做此類題的關(guān)鍵是了解句子中涉及到的關(guān)鍵詞的固定用法.作為本題是了解keep doing sth的用法,這樣做起題來就簡單多了.平時一定要多積累,才能厚積薄發(fā).

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