②There existed a close relationship between families and their milkmen.(2011·全国卷Ⅰ阅读A)
各家各户和他们的送奶人之间存在一种亲密的关系。
【对点练习】
介词填空
①They can't exist on the money he's earning.
②No one knows how this world came into existence.
③Even though he is a little boy, strange ideas always exist in his mind.
④The Imperial Palace in Beijing has been in existence for more than 500 years.
2.puzzle
n.谜;难题 vt.& vi.(使)迷惑;(使)为难
(1)be in a puzzle about sth. 对某事迷惑不解
(2)puzzle sb.
使某人为难
be puzzled by
被……迷惑
puzzle about/over sth.
苦苦思索;仔细琢磨
(3)puzzling
adj.
令人困惑的
puzzled
adj.
感到困惑的
What puzzles me is why he left the country without telling anyone.
令我百思不解的是他为什么悄悄地离开了这个国家。
②Her puzzled look on her face suggested she didn't understand what I said.
她脸上迷惑的表情表明她不明白我说的话。【对点练习】
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