Question

18．Apparently，we are safe neither at home nor in the business office．We use water in both places，but the research shows that chemicals added to our local water supply to kill harmful bacteria can have unwanted side effects．These chemicals can cause potential harm through drinking and in seemingly harmless activities as cleaning one's house．They are released（set free）from water by daily actions like water running out of tap，spraying from garden pipes，or splashing in dishwashers and washing machines．As the water is moving．these chemicals are released into the air and then breathed in．Once inside our bodies，they start to affect our health．
         Does this mean we should stop bathing？No，say the scientists，but we should put all pollution into perspective．Activities at home such as the burning of coal，cooking oil，or even candles release carbon monoxide and particulates such as cigarette ashes which have been proven as harmful to health as working or living near heavy traffic．New tugs，bedding，and even clothing give off that"new smell，"which is a sure sign of chemicals．In the office，newly applied paint，newly purchased telephones and other telecommunications equipment，and computers release polluting chemicals，too．As offices and homes often have inadequate ventilation （通风），these chemicals can build up to become health problems．Their poisonous effects are only now being slowly recognized．
         These facts suggest that，at a minimum，proper airing of newly purchased goods with an obvious chemical smell is a wise warning．Home and office windows should be opened during good weather．Even one's car needs to be ventilated as well while in the garage．
         We need further research to understand better other potential health dangers，too．For example，the effects of overcrowding of schools （carbon dioxide build-up ），the factory work environment （ an endless list of potentially dangerous substances ），and even home heating and cooling （the air conditioner may be our enemies，not our friends） have only recently started to come to light．Until we understand the effects of our new technological environment better，we can only hope that"there is no place like home．"
64．What is the main idea of the first paragraph？B
A．The air we breathe in is harmful．
B．The water in everyday use is unsafe．
C．Chemicals are added to the drinking water．
D．Chemicals are released in the running water．
65．In Paragraph 2，the underlined sentence means thatC．
A．bathing should be done with caution
B．homes and offices should be aired often
C．any pollution should be taken into consideration
D．we should prevent any pollution from doing harm to us
66．What is the purpose of the passage？C
A．To call on us to guard our water．
B．To show us that no place is like home．
C．To make us aware of the pollution around us．
D．To argue that neither homes nor offices are safe．

Answer 1

分析 本文为环保类说明文，文中主要分析了我们生活中存在的各种污染；文中首先说明家和办公室都不安全，因为这两个地方都有水；而水中含有的化学物质最终会进入人体对健康造成危害；此外，在家里和办公室里还有很多其它的污染，因为通风不足，对健康危害很大；所以作者提出建议，要多通风，并且进一步研究以便能够理解其它的对健康的危害．

解答 64．答案是B．段落大意题；第一段的第一句说明"we are safe neither at home nor in the business office．We use water in both places我们在家里或办公室内都不安全．我们在这两个地方都会水"推断"水"使得这两个地方不安全；然后下文讲述水中的化学物质如何对健康造成威胁．最后得出结论：一旦进入体内，这些化学物质便开始对我们的健康产生不利的影响．由此判断B正确．
65．答案是C．句意理解题；上文提到了水可能对健康造成危害，但这并不意味着停止用水，按照常理推断，应该是对任何污染"加以关注"，故与C项意义相符．
66．答案是C．主旨大意题；文章第一段说明在家里和办公室，日常生活中的水中的化学物质可能对我们的健康造成威胁；第二段告诉我们，在家里和办公室里其它可能的污染；在第三段作者建议在家里多通风；第四段说明人们还需要进一步研究健康的潜在危害；由此看处本文主要分析了我们周围对健康产生危害的各种污染，故选C．

点评 本文介绍我们生活周围的污染并提出建议．阅读要在整体理解文章的基础上，依据原文的信息合理推断，必要的时候要进行推理，透过句子表面看作者的真正意图．如果是主旨大意的判断要把握文章整体，避免以偏概全．