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17.Research shows that humans ______ from selfish to unselfish behavior when they are watched.(  )
A.tellB.switchC.rangeD.distinguish

分析 研究表明,在被注视的过程中,人类从自私转向无私的行为.

解答 答案B.
考查动词词义辨析.tell"区别";switch"改变";range"排序";distinguish"辨别".根据句意:研究表明,在被注视的过程中,人类从自私转向无私的行为.所以答案选B.

点评 本题考查动词的词义.动词词义题一直都是高考考查的一个热点,它注重考查考生结合语境准确选用词语和正确时态语态的能力和.由于英语词汇丰富,且用法多变,考生掌握起来有较大难度,因此在平时应注意词汇的积累,理解词语的含义及其常见的习惯搭配,再联系句子所表述的意义和语境,选出正确的答案.

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