Scans showed that grey matter density(密度) in the brain was greater in bilinguals than in people without a second language.But the longer a person waited before mastering a new language，the smaller the difference.

　　“Our findings suggest that the structure of the brain is changed by the experience of learning a second language，” said the scientists.

　　It means that the change itself increases the ability to learn.

　　Professor Dylan Vaughan Jones of the University of Wales has researched the link between bilingualism and maths skills.“Having two languages gives you two windows on the world and makes the brain more flexible，” he said.“You are actually going beyond language and have a better understanding of different ideas.”

　　The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of 2 and 34.Reading，writing，and comprehension were all tested.The results showed that the younger they started to learn，the better.“Studying a language means you get an entrance to another world，” explained the scientists.

　　【解题导语】　本文是一篇说明文，属于科普类短文阅读。学英语是一件很枯燥乏味的事情吗？英语不仅仅代表了单词。近日研究人员发现，学习外语可以帮助人们更聪明，就像锻炼会促进肌肉的生长一样。

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