健康的青春期男孩或女孩喜欢做生活中真实的事情，做重要的事情。
The healthy adolescent boy or girl likes to do the real things in life, to do the things that matter.
他们还询问孩子们，对于男孩或女孩是否不该演奏这四种乐器中的某一种，他们怎么看。
They also asked the children for their views on whether boys or girls should not play any of the four instruments.
当然，不同学生的学习能力差异很大，但研究确实表明这种差异在男孩或女孩群体中要比在两性群体中大得多。
Of course, learning does vary a lot between individual students, but research reliably shows that this variance is far greater within populations of boys or girls than between the two sexes.
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