英语听力视频：美学校雇持枪警卫增强校园安保

英语自学网

        美国各地校区雇佣持枪警卫增强校园安保
        School districts hiring armed guards.
           In the wake of the Newtown shootings, school districtsacross the country are hiring armed guards to patrolthe hallways of their schools. Meanwhile in Harrold, Texas, teachers are encouragedto carry concealed handguns. NBC's Charles Hadlock reports.
        (编辑：何莹莹）