Polluted air contains fine particles created by cars,factories and natural dust.Fine particles of this kind are tiny,about 2.5 micrometers in diameter,or about one-thirtieth the width of a human hair.These particles can go deep into lungs and other organs.

　　The concentration of this particulate material to which they exposed mice is equal to the concentration at which people can be exposed in some polluted urban areas.

　　After a period of 10 months,the researchers got the animals to have a series of behavioral tests.Both the behavior of mice and the results of neurological(神经的) tests done to them show that those within the polluted air had more problems in learning and memory,and higher levels of anxiety.

　　The results suggest that long-time exposure to polluted air can have measurable negative effects on the human brain and can cause a variety of mental health problems.This could have important consequences for those living and working in polluted urban areas.

　　6.The results of new research on mice first suggest that polluted air mainly does harm to 　. 

　　A.normal organs B.lungs and heart

　　C.mental health D.blood pressure

　　解析:细节理解题。根据第一段内容可知,最新研究表明,长期暴露在污染的空气中会伤害大脑,造成学习、记忆方面的问题,甚至引发焦虑,因此新研究首次提出空气污染对人们的精神健康有害。故选C项。

【2016届高考英语二轮复习专项练习：Book4 4.2 （新人教版）】相关文章：

★ 四川省2016届高考英语一轮复习课时作业（30） Module 6 Animals in Danger 外研版必修5

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（10）及答案

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（18）及答案

★ 【三维设计】2017届高考英语（江苏专用）二轮复习素材：高考单词5.高中英语常见词组

★ 2014届高考英语一轮复习课时作业(十六)必修3Module 4《Sandstorms in Asia》（外研版）

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（21）附答案

★ 2014届高考英语一轮复习课时作业(三十六)选修6Module 6《War and Peace》（外研版）

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修3 unit1《Festivals around the world》

★ 2017届高考英语二轮复习课时训练：9（含解析）

★ 2017届高考英语二轮复习课时训练：23（含解析）