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
2016-04-03
25
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/fbG7777K
0
大学英语六级
相关试题推荐
Ifyouintendusinghumourinyourtalktomakepeoplesmile,youmustknowhowto【C1】______sharedexperiencesandproblems.You
Islanguage,likefood,abasichumanneedwithoutwhichachildatacriticalperiodoflifecanbestarvedanddamaged?Judgin
A、Acarpenter.B、Amasterofhis.C、Abusinessman.D、Ablackdrummer.A短文中提到,Northup结识了一个加拿大木匠,他帮助Northup送信给纽约的朋友,故答案为A)。
A、Inaparkinglot.B、Atagrocery.C、Atafastfoodrestaurant.D、Inacarshowroom.C对话中女店员拿给男士一块蛋糕以及一小杯咖啡,告知总共是35元钱,并询问男士是要在店
Forthispart,youareallowed30minutestowriteanessaybasedonthepicturebelowYoushouldstartyouressaywithabrief
GettingintotheIvies[A]Askjustaboutanyhighschoolseniororjunior—ortheirparents—andthey’lltellyouthatgettin
A、Thewayforwomentoquitsmoking.B、Thedefectsofsmokingtowomen.C、Themeritsofsmokinginmakingprogress.D、Themerits
A、Avacationandartcollection.B、Atripandanewcar.C、Cashandacar.D、Moneyandatrip.D短文说,大奖是3万美元现金和6天费用全包的中国行。故答案是D。四
A、Itisaslovelyasherchild.B、Itisassweetasflowers.C、Itisaseagerasalover.D、Itisascomfortableashome.C短文说,对
A、Aprofessionalwindowcleaner.B、Automotivesalesperson.C、Servicestationattendant.D、Grocerystoremanager.C预读选项可判断,本题是身份关
随机试题
IfIfoundthebook,I______ittoyou.
男性,18岁,右手背部深Ⅱ度烧伤10天,近一天出现乏力、头痛及张口困难,恰当的诊治措施是
胰高血糖素对糖代谢作用的靶器官是
A.>X+2SB.X+SC.X-S~X+SD.<X-SE.<X-2S用离差法评价生长发育时,发育水平下等所指范围是
患者,男性,8岁,居住于农村。因发热、头痛3天,加重2天住院。3天前患儿突然发热,体温最高38.6℃,伴头痛,大便每日2~3次,稀便。近两天来体温持续在39℃以上,头痛加重,并且出现恶心、呕吐,时有烦躁、抽搐。病前10天当地下暴雨,患者曾赤脚在水中玩耍。体
患者,女,36岁。双侧乳房肿块,大小不一,形态不规则,肿块与周围组织分界不清,不与皮肤粘连推之移动,经前3~4天乳房胀痛加重,经后疼痛减轻。初步诊断为
咨询单位在其业务领域的某环节或整体过程中的强项和领先地位称为()
商品化会计核算软件开发经销单位在售出软件后应承担售后服务工作,在下列工作中.()不是软件开发销售商必须提供的。
Howlongwillthecustomer’scourselast?Whatotherlanguagescanthecustomerspeak?
【B1】【B11】
最新回复
(
0
)