We should protect the environment, everyone will lose homes.

A. or B. and C. but D. so

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Hey girls, if the boys in your class are acting silly, you might as well leave them alone. You are far more sensible than them, aren’t you?

There is science to back up this theory. Scientists from Newcastle University, UK, and Seoul University, South Korea, found that the brain matures (成熟) earlier in girls than in boys. This is partly because of the way children’s brains are “pruned.”

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In order to learn more about this process, scientists scanned the brains of 121 people aged between 4 and 40. They found that pruning began much earlier in girls. Between the ages of 10 and 12, a girl’s brain will start to see a lot of activities as the pruning process starts. But for boys, this doesn’t start until the age of 15 to 20.

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“The loss of connectivity during brain development can help to improve brain function,” scientist Sol Lim told the Daily Telegraph.

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