But what happened when these babies accustomed to English heard Spanish? The 12­month­olds studied the mouth longer, just like younger babies. They needed the extra information to recognize the unfamiliar sounds. That fits with research into bilingualism (双语) that shows babies' brains adjust themselves to distinguishing the sounds of their native language over other languages in the first year of life.

　　The continued lip­reading shows the 1­year­olds clearly still are fit for learning. Babies are so hard to study that this is “a fairly heroic data set”， says Duke University cognitive neuroscientist Greg Appelbaum, who found the research so fascinating that he wants to know more.

　　语篇解读：本文是一篇说明文。主要介绍了一项科学发现：婴儿不仅仅通过听声音来学习说话，他们还会通过观察说话者的口型来学习讲话。

　　1．According to the first paragraph, babies________.

　　A．might get its voice “mama” by lip­reading

　　B．learn to talk just from hearing the sounds

　　C．like to figure out how to shape their lips

　　D．communicate with parents through gestures

　　解析：选A　细节理解题。根据第一段第二、三句可知，婴儿可能会通过读唇的方式发出“mama”的声音。故答案选A。

　　2．What is necessary in developing babies' speech according to Lewkowicz?

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