首页
登录
职称英语
[originaltext] Recent research has claimed that an excess of positive ions i
[originaltext] Recent research has claimed that an excess of positive ions i
游客
2023-09-12
87
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 charges. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds 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, 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.
选项
A、In a mountainous area.
B、Close to a calm lake.
C、High up in the sky.
D、Where a lot of water is sprayed.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3008386.html
相关试题推荐
[originaltext]EnglandwasthefirstcountrytocompetewithSpainforclaims
[originaltext]Sothecounselingservicesweofferdealwithanyproblemsari
[originaltext]Sothecounselingservicesweofferdealwithanyproblemsari
[originaltext]Sothecounselingservicesweofferdealwithanyproblemsari
[originaltext]W:Interestedinthisbook?Thisisourbestsellerthisweek.M:
[originaltext]W:Interestedinthisbook?Thisisourbestsellerthisweek.M:
【B1】[br]【B10】[originaltext]Takingyourdogonvacationmayhavebeenunth
【B1】[br]【B9】[originaltext]Takingyourdogonvacationmayhavebeenunthi
【B1】[br]【B6】[originaltext]Takingyourdogonvacationmayhavebeenunthi
【B1】[br]【B5】[originaltext]Takingyourdogonvacationmayhavebeenunthi
随机试题
[img]2018m9s/ct_etoefz_etoeflistz_201808_0020[/img][br]Whatistheprofessor’s
[originaltext]M:MathDepartment,DoctorWebsterspeaking.W:Hello,Prof.Webs
Shouldwecareifover150knownspeciesofanimalshave【C1】______fromthee
Accordingtothepassage,destructioncausedbyhighwavesoccurs______.[br]F
DespitethegreatachievementsmadebyChinaoverthepastdecade,______(还有许多问
疾病保险的特点包括()A.疾病保险金的给付条件与疾病治疗行为的发生相关 B.
某施工企业投标报价时确定企业管理费率以人工费为基础计算,据统计资料,该施工企
患者女性,30岁。主诉有渐进性乏力,体重减轻,食欲减退,体检:消瘦,皮肤青铜色。
在市场调查方法中,()的优点在于被调查者的切动作均很自然,所收集的资料准确性较高
四逆散的功能为A.透解郁热,疏肝理脾 B.泻火,疏肝,和胃,止痛 C.疏肝理
最新回复
(
0
)