Smog is a visible example of air pollution. You can look into the distance during the day to see how much smog there is in the air. In addition, most cities measure the concentrations of pollutants in the air and report the results to the public.

　　Environmental Protection Agency sets national standards for pollutants. Areas that fail to meet the standards for at least one air pollutant are called “nonattainment (不达标) areas”. New measures are being taken by local governments across the country to reduce air pollution in nonattainment areas. These include: banning charcoal barbecues and wood burning in stoves or fireplaces when pollution levels are high; developing programs to encourage carpooling and voluntary “ozone actions”； limiting traffic in overcrowded areas; expanding or improving public transportation systems; requiring employers to contribute to employee public transportation costs; assessing “smog fees” on cars according to the number of miles driven and vehicle emissions (排放) produced; and even buying and breaking up older “super­dirty” cars.

　　语篇解读：本文是一篇说明文。文章主要谈论了烟雾的形成原因、危害以及地方政府针对这一现象所采取的应对措施。

　　8．According to the passage, ground­level ozone can______.

　　A．damage the environment

　　B．benefit human health

　　C．protect crops and forest

【2017届高考英语一轮复习必备单词素材：Unit 9 Wheels（北师大版）】相关文章：

★ 2017年高考英语二轮复习精品资料：专题15 完形填空（教学案）（原卷版）

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修3 unit4《Astronomy》

★ 2015-2016高考英语二轮复习常见的七大误区

★ 2017届高考英语二轮复习课时训练：11（含解析）

★ 【人教版】2014届高考英语一轮复习指导考点针对练：选修8 unit5《Meeting your ancestors》

★ 【浙江专用】2014届高考英语一轮复习课时作业(二十二)必修5Unit 2《The United Kingdom》

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (39)

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：模式2 多一词（含解析）

★ 【三维设计】2017届高考英语（江苏专用）二轮复习阅读理解解题技法示范课件：9

★ 2016年高考英语第一轮复习要知己知彼