19．Luong Van Inh is among the Asians threatened by an environmental risk rarely considered：Indoor air pollution caused by burning wood，coal or other cheap fuels in kitchens．It kills about 1.5million people worlwide each year．
Up to 3billion people around the world depend on solid fuels such as wood，coal，crop waste or animal waste for indoor cooking and heating．The resulting smoke ranks as the fourth-biggest health risk in the poorest countries，yet it's not paid more attention to．One article stressed that improved stoves with chimneys could reduce exposure （暴露） to indoor smoke by 30percent to 50percent．
Even World Health Organization （WHO） was surprised by the problem．Earlier this year，the WHO for the first time studied the effects of indoor air pollution on health around the world．In 2002，nearly two-thirds of all global deaths linked to burning solid fuels were in the Asia-Pacific region．Afghanistan，Pakistan and Bangladesh had the highest percentage of death and disease linked to indoor air pollution in Asia，followed by India and Laos．Women and children are the hardest-hit because they're at home the most．Mothers in many developing countries cook with their babies tied to their backs．This affects only the poorest so it's easy for the decision-makers who no longer live in this type of community not to even see it．
Using improved stoves and cleaner fuels are the good ways to solve the problem，but cost remains a barrier．China started the world's largest stove modern-izing effort in the 1980s，handing out up to 180million new stoves，all with chimneys，over 15years．The driving force （原動力） was not health，but fuel efficiency （效率），as farmers were running out of cooking fuel．However，in the long run，they need to move to cleaner fuel．
29．What is the main idea of the passage？B
A．Health is closely related to environment．
B．Indoor air pollution threatens people's health．
C．Asians are facing the most serious problem．
D．Farmers'living conditions are worse and worse．
30．Why did WHO study the effects of indoor air pollution on health？B
A．The pollution happened not only in Asian countries．
B．The indoor air pollution affects many lives．
C．The indoor air pollution is very serious in Asia．
D．The problem is difficult to solve．
31．Which of the following Asian countries is the least affected by the indoor air pollution？A
A．China．
B．Bangladesh．
C．Afghanistan．
D．Laos．
32．According to the passage，the best way to fight against the indoor air pollution is toD．
A．build  lot of chimneys  
B．choos the new stoves
C．improve the fuel efficiency 
D．turn to cleaner fuel．

分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了室內空氣污染威脅人們的健康，使用清潔燃料最好的方法來對抗室內空氣污染、

解答 29．B．推理判斷題．根據(jù)第一段Indoor air pollution caused by burning wood，coal or other cheap fuels in kitchens．It kills about 1.5million people worlwide each year可知這篇文章的主要思想是室內空氣污染威脅人們的健康；故選B．
30．B．推理判斷題．根據(jù)第一段Indoor air pollution caused by burning wood，coal or other cheap fuels in kitchens．It kills about 1.5million people worlwide each year可知研究室內空氣污染對健康的影響是因為室內空氣污染影響許多人的生活；故選B．
31．A．細節(jié)理解題．根據(jù)第三段nearly two-thirds of all global deaths linked to burning solid fuels were in the Asia-Pacific region．Afghanistan，Pakistan and Bangladesh had the highest percentage of death and disease linked to indoor air pollution in Asia，followed by India and Laos可知中國沒有在這個名單里，即它的室內空氣污染影響最小；故選A．
32．D．細節(jié)理解題．根據(jù)最后一段However，in the long run，they need to move to cleaner fuel可知最好的方法來對抗室內空氣污染是使用清潔燃料；故選D．

點評 考察學生的細節(jié)理解和推理判斷能力，做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．

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