首页
登录
职称英语
Recent research had claimed that an excess of positive ions in the air could
Recent research had claimed that an excess of positive ions in the air could
游客
2024-03-05
21
管理
问题
Recent research had claimed that an excess of positive ions in the air could 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. If the balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds such as the Mistral, Foehn, 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 found to be 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 US 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 m 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 that 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 or positive in 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.
选项
A、They think they are mad.
B、They feel very tired.
C、They become violently sick.
D、They are too tired to do anything.
答案
B
解析
文章第二段第一句谈到了大量的正离子会使人感到疲惫不堪,甚至出现恶心和精神错乱等症状,所以B“使人感到疲惫不堪”是正确答案。sensitive people可能会精神错乱,但A“他们觉得自己疯了”夸大了事实。他们可能会生病,但C中violently一词显然过于严重。D“累得什么也干不了”在文中找不到根据。
转载请注明原文地址:https://tihaiku.com/zcyy/3507314.html
相关试题推荐
[originaltext]Accordingtolatestpsychologicalresearch,appearancedoesa
[originaltext]Accordingtolatestpsychologicalresearch,appearancedoesa
[originaltext]Accordingtolatestpsychologicalresearch,appearancedoesa
Since1975,Dr.Griffinhasbeenresearchingtheideaofanimalthinkingand
Since1975,Dr.Griffinhasbeenresearchingtheideaofanimalthinkingand
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]Anewstudyhasfoundapositivecorrelationbetweenhowmuch
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]Anewstudyhasfoundapositivecorrelationbetweenhowmuch
[originaltext]Anewstudyhasfoundapositivecorrelationbetweenhowmuch
随机试题
Awell-documentedbodyofinformationexists.Itshowsthatnoisecan【C1】___
GlobalDevelopmentsSociologiststellusthereisalink
[A]energetically[I]indignant[B]sharpens[J]expansion[C]exposition[K
Fromthispassage,welearnthatanebook______.[br]Whichofthefollowingsta
【S1】[br]【S8】K这里根据构词法需要一个形容词,形容地下通道表面的形状,只有rough表示“粗糙的”,符合要求。
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
(2017年真题)金融企业在批量转让不良资产时,应对资产管理公司的买方尽职调查提
根据《基础地理信息城市数据库建设规范》,下列数据中,不属于三维建筑模型数据组成部
住房公积金汇缴年度为()。A:上年10月1日至当年9月30日 B:上年9月1日
关于项目监理机构中管理层次与管理跨度的说法,正确的是()。A.管理层次是指
最新回复
(
0
)