We give our school loom all installed best antivirus for PC, feel particularly good, before each class was always that the reaction speed of the machine is particularly slow and often like some viruses, it may be because we are together with usually do not pay attention, so the machine all day out a variety of small problems, the results since installed this best antivirus for PC those small problems, there have not been, and sometimes even some of the more naughty students will loom above download some games or other things and has never appeared in a virus such problems, as we usually save a lot of time to learn it.