题目

    According to a recent survey, violence did   61  (existence) in schools. Students showed their fear and parents and teachers also expressed their great concern about it.   62  (obvious), it’s time for the whole society to pay more attention to the mental health of adolescents (青少年).     Nowadays, school violence is   63   hot issue. I think this is a phenomenon (现象)   64   calls for our great concern. We should try every effort to prevent violence from   65  (happen) at school, for more and more students would drop out of school   66   their personal safety could not be ensured. In fact, violence can   67  (learn). Children learn violent behavior from adults or from   68   they see on television or on the Internet.     If I meet with school violence, I will not answer violence   69   violence, for it will result in more fighting. I will tell my teachers or parents about it. I think they will help me deal with it well and they will protect me from the bad guys.     All in all, every student   70   behave himself and keep away from violence. 答案：61. exist  62. Obviously  63. a  64. which/that  65. happening  66. if    67. be learnt/learned   68. what      69. with  70. should/ought to/ must

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