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 （通風(fēng)），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．a(chǎn)ny 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 本文為環(huán)保類說明文，文中主要分析了我們生活中存在的各種污染；文中首先說明家和辦公室都不安全，因?yàn)檫@兩個(gè)地方都有水；而水中含有的化學(xué)物質(zhì)最終會(huì)進(jìn)入人體對(duì)健康造成危害；此外，在家里和辦公室里還有很多其它的污染，因?yàn)橥�風(fēng)不足，對(duì)健康危害很大；所以作者提出建議，要多通風(fēng)，并且進(jìn)一步研究以便能夠理解其它的對(duì)健康的危害．

解答 64．答案是B．段落大意題；第一段的第一句說明"we are safe neither at home nor in the business office．We use water in both places我們在家里或辦公室內(nèi)都不安全．我們在這兩個(gè)地方都會(huì)水"推斷"水"使得這兩個(gè)地方不安全；然后下文講述水中的化學(xué)物質(zhì)如何對(duì)健康造成威脅．最后得出結(jié)論：一旦進(jìn)入體內(nèi)，這些化學(xué)物質(zhì)便開始對(duì)我們的健康產(chǎn)生不利的影響．由此判斷B正確．
65．答案是C．句意理解題；上文提到了水可能對(duì)健康造成危害，但這并不意味著停止用水，按照常理推斷，應(yīng)該是對(duì)任何污染"加以關(guān)注"，故與C項(xiàng)意義相符．
66．答案是C．主旨大意題；文章第一段說明在家里和辦公室，日常生活中的水中的化學(xué)物質(zhì)可能對(duì)我們的健康造成威脅；第二段告訴我們，在家里和辦公室里其它可能的污染；在第三段作者建議在家里多通風(fēng)；第四段說明人們還需要進(jìn)一步研究健康的潛在危害；由此看處本文主要分析了我們周圍對(duì)健康產(chǎn)生危害的各種污染，故選C．

點(diǎn)評(píng) 本文介紹我們生活周圍的污染并提出建議．閱讀要在整體理解文章的基礎(chǔ)上，依據(jù)原文的信息合理推斷，必要的時(shí)候要進(jìn)行推理，透過句子表面看作者的真正意圖．如果是主旨大意的判斷要把握文章整體，避免以偏概全．