问题描述：
求讲解,剑桥雅思3,test3,阅读第三篇的第30题,
serotonin is an essential cause of human aggression是对,错还是没告
文章最后一段倒数第16行写道：high levels of sertonin in certain areas of the nervous system make people more active and reactive and,possibly,more aggresive.
写的很明显了啊,会引起aggression,可是为什么选F呢?
serotonin is an essential cause of human aggression是对,错还是没告
文章最后一段倒数第16行写道：high levels of sertonin in certain areas of the nervous system make people more active and reactive and,possibly,more aggresive.
写的很明显了啊,会引起aggression,可是为什么选F呢?
问题解答：
我来补答展开全文阅读