题目内容

Before the Columbine High School shooting last year, ______ of American schools were considered safe.

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Questions 11 to 18 are based on the conversation you have just heard.

A. She had missed the graduation party.
B. She would not attend.
C. She decided to attend it.
D. She was sorry for what she did.

Counseling programs have helped in preventing children from re sorting to violence.

In the United States many high school shooting, many American schools became equipped with security systems.

The problem of violence in the classroom is worse in the developed countries.