分析 本文讲述了一种特殊的大脑感知现象:我们通常相信大脑所告诉我们的事,但有一些令人惊奇的事实表明,大脑会欺骗我们.这种现象叫做变化盲视现象:就是人们看到不存在的事物或是忽视存在的事物的大脑"欺骗"人的现象.然后讲述了著名的变化盲视实验.
解答 39.A.细节理解题.根据Scientists Daniel Simons andChristopher Chabris have researched this phenomenon.可知,他们是科学家.故选A.
40.D.推理判断题.根据In this experiment,the participants(参与者)were shown a video of two groups of people (one group in white T-shirts and one group in black T-shirts) who passed basketballs around in a hallway.Each group had three members.Simons and Chabris asked the participants to count how many times the white team passed the ball.While the two teams were passing their balls around,a person dressed up as a big bear walked through the group and stopped to look at the camera.可知实验需要两个组,每组三人,另一个穿成大熊的人.共七个,故选D.
41.B.细节理解题.根据短文最后一句:Simons and Chabris found that abouthalf of the research participants did not notice the big bear.可知他们发现大约一半的人没有注意到这只熊.故选B.
42.D.推理判断题.根据Their experiments show how we sometimes just do not see what is in front of our eyes because可知他们的实验显示有时因为我们注意着其它东西而没有看见我们眼前的东西.根据句意可以分析出本题选D.故选D.
点评 本篇是一篇科普知识类阅读短文.这篇短文文讲述了一种特殊的大脑感知现象--变化盲视现象.解答时首先通读全文掌握大意,然后带着问题去文中寻找答案,最后检查核对,确保答案的准确性.
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