A-A+
found in homes and which occurs from the 10 co
问题详情
found in homes and which occurs from the 10 concentrations that occur for short periods of time.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：
【解析】选[H]。空后的名词表明此处应填一形容词。此句是说，在短时间接触高浓度的污染物后身体有哪种影响或反应，[H]higher符合语义。上句的average也对此处答案有提示作用。
