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
Recent research has claimed that an excess of positive ions in the air can have an ill effect on people’s physical or psychologi
Recent research has claimed that an excess of positive ions in the air can have an ill effect on people’s physical or psychologi
admin
2014-01-13
39
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.
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://kaotiyun.com/show/x2QO777K
0
考博英语
相关试题推荐
Itdidn’thappenovernightTheproblemofpollutedairhasbeenfesteringforcenturies.Suddenlytheproblemofairpolluti
Itdidn’thappenovernightTheproblemofpollutedairhasbeenfesteringforcenturies.Suddenlytheproblemofairpolluti
Areyoualwayssureyouknowwhatpeoplemeanwhentheytrytodescribetheirfeelingstoyou?Weusebothwordsandgesturesto
Areyoualwayssureyouknowwhatpeoplemeanwhentheytrytodescribetheirfeelingstoyou?Weusebothwordsandgesturesto
The______ofsuchI.Q.testsfullofquestionsonAmericanculturewasnotquestionedatthattime.
WhydoesfreshmanEnglishremaintheonlycommoncourseofAmericancollegestudents?Whilewithinrecentmemory,requirementss
Researchershavestudiedthepoorasindividuals,asfamiliesandhouseholds,asmembersofpoorcommunities,neighborhoodsand
TheGreek’sloftyattitudetowardscientificresearchandthescientists’contemptofutilitywasalongtimedying.Foramille
Eversincethisgovernment’stermbegan,theattitudetoteachershasbeenovershadowedbythemantrathatgoodteacherscannot
Eversincethisgovernment’stermbegan,theattitudetoteachershasbeenovershadowedbythemantrathatgoodteacherscannot
随机试题
车削过程中,工件每转一转,车刀沿进给方向移动的距离为()。
下列各句中,有名词用作动词的一句是【】
根据我国《刑事诉讼法》有关条文的规定,下列哪些可以属于附带民事诉讼的请求范围?()
关于财务内部收益率的说法,正确的是:
在供热管道安装工程中,壁厚为8mm的钢管对口错边量允许偏差为()。
采用限价委托方式要求经纪商必须帮助客户以( )。
下列各项中,不能在现金预算中反映的是()。
接到作者自投稿件进行审稿时,除审查其内容和形式外,还要()。
《物权法》第113条:“遗失物自发布招领公告之日起六个月内无人认领,归国家所有。”关于该条,下列判断正确的是()。
A、shouldremaineffectiveB、shouldbeabolishedC、shouldbediscussedagainD、shouldbesupplementedC
最新回复
(
0
)