C. Argentina is not important before it wins the World Cup.

　　D. Argentina is world-famous for its football because of its obvious position on the map.

　　67. The word “irrational” in the third paragraph means _____.

　　.

　　A. passionate

　　B. happy

　　C. angry

　　D. unreasonable

　　D

　　If English means endless new words and difficult grammar, you are wrong. Haven’t you noticed that you have become more smarter since you started to learn a language?

　　According to a new study by a British university, learning a second language can

　　lead to

　　an increase in your brain power.

　　Researchers found that learning other languages changes grey matter (中枢神经系统的灰质).

　　This is the area of the brain which processes information.

　　It is similar to

　　the way that exercise builds muscles. The study also found the earlier people learn a second language, the greater the effect.

　　A team of experts from London took a group of Britons who only spoke English.

　　They were compared with a group of “early bilinguals” (能说两种语言的人) who had learnt a second language before the age of five, as well as a number of later learners.

　　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.

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