阅读理解。 Secondhand smoke is a byproduct of cigarette, cigar or pipe smoking.

题文

阅读理解。 Secondhand smoke is a byproduct of cigarette, cigar or pipe smoking. Secondhand smoke occurs when tobacco burns or when smokers exhale, and it is inhaled (吸入)involuntarily by non-smokers. Secondhand smoke___________________. The first is called side stream smoke, which is the smoke relead from the burning end of a cigarette or cigar, or from tobacco burning in the bowl of a pipe. The cond is called mainstream smoke, which is exhaled by a smoker. When nonsmokers are expod to condhand smoke, they inhale many of the same cancer-causing chemicals that smokers inhale. According to the U.S. Surgeon General, cigarette smoke contains more than 4,000 chemical compounds, including more than 50 cancer-causing chemicals, and at least 250 chemicals that are either toxic or carcinogenic. Both side stream and mainstream smoke are dangerous to nonsmokers. Side stream smoke is generated at lower temperatures and under different conditions than mainstream smoke. As a result, it contains higher concentrations of many of the toxins found in cigarette smoke. Secondhand smoke has been designated as a known human carcinogen by the U.S. Environmental Protection Agency, the National Toxicology Program, and the International Agency for Rearch on Cancer. Secondhand smoke also is listed as an occupational carcinogen by the National Institute for Occupational Safety and Health. According to the 2006 report by the U.S. Surgeon General, there is no risk-free level of exposure to condhand smoke: even small amounts of condhand smoke exposure can be harmful to people's health. Separating smokers from nonsmokers, cleaning the air, and ventilating buildings can help. However, they cannot eliminate the exposure of nonsmokers to condhand smoke. 1.What is the main idea of the text? (no more than 10 words)     _________________________________________________________  2. Which ntence in the text is clost in meaning to the following one?In whatever way, people can’t get rid of the risk of nonsmokers to condhand smoke completely. _________________________________________________________3. Fill in the blank in Paragraph 2 with proper words. (no more than 8 words) _________________________________________________________4. Name at least three ways that will help reduce the harm of condhand smoke.  (no more than 12 words) _________________________________________________________5. Translate the underlined ntence in Paragraph 3 into Chine. _________________________________________________________ 题型：未知难度：其他题型

答案

1.Secondhand smoke and its effect on non-smokers’ health 2.However, they cannot eliminate the exposure of nonsmokers to condhand smoke. 3.is compod of /consists of/ is made up of two types of smoke4.Separating smokers from nonsmokers； Cleaning the air；Ventilating buildings5.当不吸烟的人吸二手烟时，他们吸入了很多和吸烟人一样的致癌物质。答案不唯一

解析

该题暂无解析

考点

据考高分专家说，试题“阅读理解。 Secondhan.....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。