据反映,去年某地的一所子弟小学,几日内有一百七十余人出现了头痛、头晕、抽搐等症状。经查明是该市绿化队为学校树木治虫喷洒氧化乐果污染了教室地面和空气,致使部分学生农药中毒。通过一年多治疗,虽然大部分学生已康复,但中毒较严重的二十余名7～13 It is reported that a child primary school in a certain place last year showed symptoms of headache, dizziness and convulsions in more than one hundred seventy days in a few days. It was ascertained that the greening team in the city polluted the classroom ground and the air for the trees and insects sprayed on school trees, causing some students to be poisoned by pesticides. After more than one year of treatment, although most of the students have recovered, more than 20 of them have been poisoned 7 to 13