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托福阅读词汇题：potent

2015-08-26 15:37:12来源：网络

　　【托福阅读题型：potent词汇题】托福阅读中词汇题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之词汇题

　　托福阅读词汇题：potent

　　【Paragraph 2】Such techniques, however, have limitations. First, the observation may be unreliable in that two　or more observers may not agree that the particular response occurred, or to what degree it occurred. Second,　responses are difficult to quantify. Often the rapid and diffuse movements of the infant make it difficult to get an　accurate record of the number of responses. The third, and most potent, limitation is that it is not possible to becertain that the infant's response was due to the stimulus presented or to a change from no stimulus to a stimulus.　The infant may be responding to aspects of the stimulus different than those identified by the investigator. Therefore,　when observational assessment is used as a technique for studying infant perceptual abilities, care must be taken　not to overgeneralize from the data or to rely on one or two studies as conclusive evidence of a particular　perceptual ability of the infant.(Methods of Studying Infant Perception)

　　The word potent in the passage is closest in meaning to

　　○artificial

　　○powerful

　　○common

　　○similar

　　答案见下一页：

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