首页
登录
职称英语
Recent research has claimed that an excess of positive ions in the air can h
Recent research has claimed that an excess of positive ions in the air can h
游客
2025-04-14
43
管理
问题
Recent research has claimed that an excess of positive ions in the air can have an ill effect on people’s physical or psychological health. What are positive ions? Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charged. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorm, earthquakes when winds such as the Mistral, Hamsin or Sharav are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibers, or from TV sets, duplicators or computer display screens.
When a large number of positive ions are present, in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also affected, particularly before earthquakes, snakes have been observed to come out of hibernation, rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the U.S. Geographical Survey to fund a network, of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas such as California.
Conversely, when large numbers of negative ions are present, then people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.
To increase the supply of negative ions indoors, some scientists recommend the use of ionisers: small portable machines, which generate negative ions. They claim that ionisers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative / positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat. [br] What effect does exceeding positive ionization have on some people?
选项
A、They think they are insane.
B、They become rather bad-tempered.
C、They become violently sick.
D、They are too tired to do anything.
答案
B
解析
本题为细节题。根据原文第二段描述,阳离子过量会给人体造成不适,其中包括使人易怒,因此,B选项符合原文意思。此外,A、C和D选项夸大了原文的意义,故排除。因此,B选项正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4037450.html
相关试题推荐
Inrecentyears,therehasbeenasteadyassaultonsaltfromthedoctors:s
Manhaslongwishedtopredictearthquakes.Recentfindingsindicatethatr
Manhaslongwishedtopredictearthquakes.Recentfindingsindicatethatr
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlo
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlo
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlo
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlo
Whenconcernedparentsprotesttheexcessivesexorviolenceontelevision,
Whenconcernedparentsprotesttheexcessivesexorviolenceontelevision,
Whenconcernedparentsprotesttheexcessivesexorviolenceontelevision,
随机试题
Dina:Youlookrun-down,Brian.Brian:Yeah.I’vebeenfeelingundertheweatherr
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrol
金融商业交易所按正常电源断电后电源转换时间要求,可采用下列应急电源中的()。
多层公共建筑中,防火墙应采用()A.普通混凝土承重空心砌块(330mm×29
A.0.9~1mm B.约1mm C.2.5mm D.1~1.5mm E
男性,67岁。近两年来出现讲话时突然沉默不语,约两小时后转为正常,有时出现视幻觉
理解书本知识必须以感性知识为基础,并不是要求每节课都要从感知具体事物开始。(
下图是一位成年患者的血液检测报告,根据报告的显示内容,说法正确的是: A.单位
王某系某合同案件被告,法院判决其3个月内偿还原告货款50万元。后王某被强制执行
工程物资的采购模式对进度也有直接的影响,它属于()。A.组织措施 B.管理措
最新回复
(
0
)