根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
The effect of bullying(欺凌) can be serious and even lead to tragedy. Unfortunately, it is still a mostly unresearched area.
16________That year, two students with shotguns, both of whom had been considered gifted and who had been bullied for years, killed 13 people, wounded 24 and then committed suicide. A year later, an analysis by the US government found that bullying played a major role in more than two- thirds of the campus violence.
17________Numerous invaders throughout history have tried to defend their bullying behavior by claiming that they themselves were bullied. 18________Although there is no justification for bullying, many of the worst humans in history have indeed been bullies and victims of bullying.
Since bullying is often ignored, it may provide an important clue in crowd behavior and passer-by behavior. 19________Many of them have suggested bullying as one of the reasons of this decline in emotional sensitivity and acceptance of violence as normal. When someone is bullied, it is not only the bully and the victim who are becoming less sensitive to violence. 20________In this sense, bullying affects not only the bullied but his friends and classmates and the whole society.
A. Research indicates that the victim often becomes the bully.
B. Psychologists have been puzzled by the inactivity of crowds and bystanders when crimes occur in very crowded places.
C. More attention should be paid to people's reaction to bullying when it happens.
D. Hitler, for example, is claimed to have been a victim of bullying in his childhood.
E.Campus bullying is becoming a serious problem in some high schools in big cities.
F. The friends and classmates of the bully and the victim also accept the violence as norm
G. The link between bullying and school violence has attracted increasing attention since 1999.
第二节 （共5小题；每小题2分，满分10分）
16-20．GADBF
The effect of bullying(欺凌) can be serious and even lead to tragedy. Unfortunately, it is still a mostly unresearched area.
16________That year, two students with shotguns, both of whom had been considered gifted and who had been bullied for years, killed 13 people, wounded 24 and then committed suicide. A year later, an analysis by the US government found that bullying played a major role in more than two- thirds of the campus violence.
17________Numerous invaders throughout history have tried to defend their bullying behavior by claiming that they themselves were bullied. 18________Although there is no justification for bullying, many of the worst humans in history have indeed been bullies and victims of bullying.
Since bullying is often ignored, it may provide an important clue in crowd behavior and passer-by behavior. 19________Many of them have suggested bullying as one of the reasons of this decline in emotional sensitivity and acceptance of violence as normal. When someone is bullied, it is not only the bully and the victim who are becoming less sensitive to violence. 20________In this sense, bullying affects not only the bullied but his friends and classmates and the whole society.
A. Research indicates that the victim often becomes the bully.
B. Psychologists have been puzzled by the inactivity of crowds and bystanders when crimes occur in very crowded places.
C. More attention should be paid to people's reaction to bullying when it happens.
D. Hitler, for example, is claimed to have been a victim of bullying in his childhood.
E.Campus bullying is becoming a serious problem in some high schools in big cities.
F. The friends and classmates of the bully and the victim also accept the violence as norm
G. The link between bullying and school violence has attracted increasing attention since 1999.
第二节 （共5小题；每小题2分，满分10分）
16-20．GADBF
