首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution also ca
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution also ca
admin
2016-04-02
29
问题
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution also can cause【B1】______health effects. U.S. Environmental Protection Agency studies of human exposure to air pollutants indicate that indoor levels of pollutants may be 2 to 5 times, and【B2】______more than 100 times, higher than outdoor levels. These levels of indoor air pollutants may be of particular concern 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【B3】______soon after exposure or, possibly, years later. Immediate effects may【B4】______after a single exposure or repeated exposures. These include headaches, dizziness,【B5】______, and irritation(疼痛)of the eyes, nose, and throat. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply【B6】______the person’s exposure to the source of the pollution, if it can be identified. The likelihood of immediate reactions to indoor air pollutants【B7】______several factors. Age and preexisting medical conditions are two important【B8】______.
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 For this reason, it is important to【B9】______the time and place symptoms occur. If the symptoms【B10】______ or go away when a person is away from home, for example, an effort should be made to identify indoor air pollutant sources that may be possible causes.
【B4】
选项
答案
show up
解析
根据空格前的情态动词may判断这里应填入原形动词。show up的意思是“出现”。
转载请注明原文地址:https://kaotiyun.com/show/auL7777K
0
大学英语六级
相关试题推荐
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionaryeffectonthelivesofthepeoplewhooperatethene
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoiceweshouldprefertoliveinthecountryawayfromt
ObtainingLinguisticDataA)Manyproceduresareavailableforobtainingdataaboutalanguage.Theyrangefromacarefullyplann
ObtainingLinguisticDataA)Manyproceduresareavailableforobtainingdataaboutalanguage.Theyrangefromacarefullyplann
A、Akindofexchange.B、Akindofbusiness.C、Acommercializedexchange.D、Aninternationalfriendshipassociation.C
中国服饰不仅是随着时间演变,还经常随着朝代的更替或者新统治者的圣旨(theimperialdecree)而发生巨大变化。在古代的封建社会(feudalsociety),人们的等级和地位,可以轻松地通过日常衣物区分开来,对普通人和上层社会的人而言,尤其如
A、Senseofduty.B、Self-confidence.C、Workefficiency.D、Passionforwork.B短文中提到,寻求建议者需要向其他人寻求建议才能在工作中获得安全感,也就是说他们在工作中缺乏自信心;而单独
中国将环境保护列为基本国策。根据环境保护法,继续污染水、空气环境等将受到经济的制裁及法律的严惩。非法猎杀、贩卖、走私野生动物及濒危物种将受到法律严惩。中国坚持环境保护与经济建设并重。植树造林工程被列入了“中国21世纪议程”,其为联合国环境规划署资助的重要项
A、Mostofthemaresatisfied.B、Mostofthemareveryhappy.C、Mostofthemareunhappy.D、Mostofthemarenotsatisfied.A细节题。
A、CalltheTVstation.B、Lookforcatswiththeman.C、Meetthemanatthecatexhibit.D、WatchtheprogramonTV.D推理题。四个选项以动词开
随机试题
对正在哺乳自己婴儿的妇女依法可以实行监外执行措施,哺乳自己婴儿的妇女的哺乳期为
下列不属于公共关系工具的是()
最可能对类风湿关节炎滑膜切除术的结果造成不利影响的因素是
当通货膨胀在一定的可容忍范围内持续时,股价将()。
当年中国工农红军赢得两万五千里长征的胜利,震惊世界,“震惊”不是歼敌之多,而主要是红军过雪山草地时那种在极度寒冷、饥饿、疲惫、缺氧和污浊的条件下的生存能力。许多国家都在缺路、缺水、缺食、缺火、缺光、缺氧等极度艰苦的条件下,训练士兵的生存能力。这段话直接支持
高度发达的工业化是现代化的重要标志,走什么样的工业化的道路,是我们面临的重大课题,我国要实现生产力的跨越式发展必须()。
下表为我国2005年至2009年的国际收支平衡表。请根据表格内容分析这段时期内我国的国际收支状况,分析原因并提出政策建议。来源:国家外汇管理局(SAFE)
在考生文件夹下分别建立REPORT1和REPORT2两个文件夹。
WhydoesthewomancallMr.Johnson?
MTBAUTOSALES,LTD.OFFICEMEMODearallemployees,Presentationskillsandpublicspeakingskillsareveryusefulinmanyaspe
最新回复
(
0
)