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新编六级听力每日练习 第237期

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Test 2
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution also can cause (36) ______ health effects. U.S. Environmental Protection Agency studies of human exposure to air pollutants (37) ______ that indoor levels of pollutants may be 2 to 5 times, and (38) ______ more than 100 times, higher than outdoor levels. These levels of indoor air pollutants may be of particular (39) ______ because most people spend about 90% of their time indoors.
Many sources of indoor air pollution can be found in any home or office. Health effects from indoor air pollutants may be (40) ______ soon after exposure or, possibly, years later. Immediate effects may show up after a single exposure or (41) ______ exposures. These include headaches, dizziness, (42) ______ , and irritation (疼痛) of the eyes, nose, and throat. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply (43) ______ the person's exposure to the source of the pollution, if it can be identified. (44) ______________________________________________________ . Age and preexisting medical conditions are two important influences.
Certain immediate effects are similar to those from colds or other diseases, so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution. (45) ____________________________________________ . If the symptoms fade or go away when a person is away from home, (46) _________________________________________________ .

重点单词   查看全部解释    
determine [di'tə:min]

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v. 决定,决心,确定,测定

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identified

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adj. 被识别的;经鉴定的;被认同者 v. 鉴定(id

 
particular [pə'tikjulə]

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adj. 特殊的,特别的,特定的,挑剔的
n.

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irritation [.iri'teiʃən]

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n. 刺激,烦恼,刺激物

 
pollution [pə'lu:ʃən]

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n. 污染,污染物

 
source [sɔ:s]

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n. 发源地,来源,原始资料

 
certain ['sə:tn]

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adj. 确定的,必然的,特定的
pron.

 
identify [ai'dentifai]

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vt. 识别,认明,鉴定
vi. 认同,感同身

 
protection [prə'tekʃən]

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n. 保护,防卫

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occasionally [ə'keiʒənəli]

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adv. 偶尔地

 
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