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
32
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
ObtainingLinguisticDataA)Manyproceduresareavailableforobtainingdataaboutalanguage.Theyrangefromacarefullyplann
Exerciseisgoodforyou.Butmostpeoplereallyknowverylittleabouthowtoexercise.Lookatthefollowingtrue-falsetests.
Therewasatimewhenbig-leagueuniversitypresidentsreallymattered.TheNewYorkTimescoveredtheireverymove.Presidents,
ImaginethattheSpanish-speakingworldwasasinglecountrywhichiscalledHispanidad.Itcoversa【C1】______perhapsone-an
Nottoomanydecadesagoitseemed"obvious’1bothtothegeneralpublicandtosociologiststhatmodernsocietyhaschangedpeo
人们常说,如果你在北京,有两样事情是你一定要做的,一是爬长城,二是吃北京烤鸭(PekingDuck)。以前只有宫廷厨房才有,现在全北京,全世界的千万个餐馆都可以吃到传说中的北京烤鸭。北京烤鸭的起源可以追溯到大约600年前的明朝。那时候,来自中国各地的厨师前
BillStoneisnotanastronaut—heistheworld’smostfamouscaver.Leadinglargeinternationalteamsandbackedbysponsorsl
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
A、Toidentifykindsofhoney.B、Toidentifyrelatives.C、Tofindtheirwaybacktothenest.D、Tolocateplantfibers.B由男士提到I’m
A、Frank’stalentforteaching.B、Frank’sinterestingapproachtoresearch.C、ApresentFrankwillreceiveforgraduation.D、Aco
随机试题
10~17岁青少年IDA发病率为
尖锐湿疣的病原是
小儿厌食脾运失健证的用方是小儿厌食胃阴不足证的用方是
A.亲和力及内在活性都强B.具有一定亲和力但内在活性弱C.与亲和力和内在活性无关D.有亲和力、无内在活性,与受体不可逆性结合E.有亲和力、无内在活性,与激动剂竞争相同受体效价高、效能强的激动剂
管道工程施工应遵循()、水管让风管的配管原则。
甲公司有关业务如下:(1)2010年10月20日,甲公司自公开市场取得—项权益性投资,支付价款2000万元,作为交易性金融资产核算。2010年12月31日,该投资的市价为2200万元,2010年税前会计利润为1000万元。(2)2011年12月31日,
2014年,12358全国价格举报管理系统将实现()联网,进一步提升价格监管的信息化水平。
下列关于《矛盾论》表述正确的是()。
某超市以每千克7元的价格购入水果200千克,并以每千克10元的价格售出150千克,剩下可出售的水果按八折甩卖一空。经计算,销售本批水果共获利300元。那么,这批水果的折损率是多少?
以下叙述中,错误的是( )。
最新回复
(
0
)