A state medical examiner said an initial autopsy of the gunman, Cho Seung-hui, found no brain abnormalities that would explain his rampage.

国家验尸员说赵承熙的初步解剖报告显示，他的大脑并没有出现任何异常迹象可以来解释他的狂暴。

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We faced the same decision when Virginia Tech shooter Seung-hui Cho released a videotape in which he said, "You forced me into a corner."

当维吉尼亚理工大学枪击犯赵承熙发布一段视频并称“是你们把我逼进角落”时，我们面对同样的决择。

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Apart from the evident fact that Cho Seung-hui should have been institutionalised long before he committed his crimes, not one of your suggested changes to America's gun laws would have prevented him from obtaining high-capacity, semi-automatic handguns.

ECONOMIST: The OECD

The largest single school shooting in U.S. history, which occurred at Virginia Tech in 2007, was perpetrated by Seung-Hui Cho.

CNN: Rejection, bullying are risk factors among shooters

"The heinous crimes committed by Seung-Hui Cho were an unprecedented act of violence that no one could have foreseen, " Mr. Owczarski said.

WSJ: Virginia Tech Is Liable in Shootings