Or do newborns simply prefer more to fewer？The same experiment，but with three spots shown before two，shows the same return of interest when the number of spots changes.Perhaps it is just the newness？When slightly older babies were shown cards with pictures of objects (a comb，a key，an orange and so on)，changing the number of objects had an effect separate from changing the objects themselves.Could it be the pattern that two things make，as opposed to three？No again.Babies paid more attention to squares moving randomly on a screen when their number changed from two to three，or three to two.The effect even crosses between senses.Babies who were repeatedly shown two spots became more excited when they then heard three drumbeats than when they heard just two；likewise(同样地) when the researchers started with drumbeats and moved to spots.

　　【语篇导读】　本文围绕婴儿视觉实验而展开研究，研究人员用有不同数量黑点的纸板来测试孩子的视觉反应，接下来加入鼓声作为背景，进一步研究婴儿对数字的视觉及听觉反应。

　　★1.The experiment described in Paragraph 1 is related to the babys________．

　　A．sense of hearing

　　B．sense of sight

　　C．sense of touch

　　D．sense of smell

　　答案　B　[推理判断题。根据文章第一段可知，刚刚出生的孩子对于两个和三个斑点的卡片反应不同，可知是对孩子视觉的测验。]

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