小东是六年级学生。一个星期天上午,爸爸妈妈到外婆家,只留下他与七岁的妹妹在家里。当时正值冬季,天气特别冷,爸爸妈妈临走前嘱咐他与妹妹用煤炉取暖时注意通风。下午三点多钟,小东和妹妹看电视中的动画片。看着看着,妹妹说自己有些头晕,小东也没有在意。又过了十多分钟,妹妹说头疼得厉害。小东正打算给妹妹找点止痛药,突然感觉自己也有些头晕。小东无意中看了炉子 Little East is a sixth grader. One Sunday morning, Mom and Dad to grandmother, leaving only his seven-year-old sister at home. At that time, it was winter and the weather was especially cold. Mom and Dad asked him and her sister to pay attention to ventilation when heating with a coal stove. More than three o’clock in the afternoon, Little East and sister watching TV animation. Looked at, my sister said he was dizzy, Little East did not care. After another ten minutes, my sister said he had a bad headache. Little East is going to find some painkillers sister, I suddenly felt some dizziness. Little East inadvertently saw the stove