首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Cell Phones: Hang Up or Keep Talking? Millions of people are using cell phon...
Cell Phones: Hang Up or Keep Talking? Millions of people are using cell phon...
admin
2020-12-24
52
问题
Cell Phones: Hang Up or Keep Talking?
Millions of people are using cell phones today. In many places it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication -- having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.
On the other hand, why do some medicalstudies show changes in the brain cells of some people who use mobile phones? Signs of change in the tissues of the brain and head can be detected with modern scanning (扫描) equipment. In one case, a traveling salesman had to retire at a young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.
As the discussion about their safetycontinues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.
On the safety issue of mobile phones, the manufacturing companies()
选项
A.deny the existence of mobile phone radiation.
B.develop new technology to reduce mobile phone radiation.
C.try to prove that mobile phones are not harmful to health.
D.hold that the amount of radiation is too small to worry about.
答案
D
解析
细节题。题干:关于手机的安全问题,生产商____。由关键词safety定位到第四段第四句“手机生产商承认手机有辐射,但是数量极少可以忽略”,很显然,D选项为正确答案。
转载请注明原文地址:https://ti.zuoweng.com/ti/fvMQKKKQ
相关试题推荐
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
WhyPeopleUsePseudonyms(假名字)? Youcan’tchoosethenameyouaregivenat...
ThreeWaystoBecomeMoreCreative Mostpeoplebelievetheydon’thavemuch...
ThreeWaystoBecomeMoreCreative Mostpeoplebelievetheydon’thavemuch...
ThreeWaystoBecomeMoreCreative Mostpeoplebelievetheydon’thavemuch...
Heinspiredmanyyoungpeopletotakeupthesport.AallowedBencouragedCcall
随机试题
患者外周血象:血红蛋白60g/L,白细胞2.0X10^9/L,血小板20X10^
(67-69题共用题干) 男性,32岁。近1年来出现尿频、尿不尽,肛周隐痛不适
人参皂苷B型的真正苷元是 A、20(S)原人参二醇 B、20(S)原人参三
故障树分析的基本程序包括()。
下列各项中,不属于免征房产税的是()。
在股权设置中,乡村集体企业实行股份合作制时,必须设置( )。
她总是喜欢________她的美丽。填入划横线处最恰当的一项是()。
5岁患儿,自幼青紫,有蹲踞现象,胸片示肺血少。 患儿的心电图改变是 A.不
()就是根据企业目前所有资产的变卖价值来确定企业价值。A.现金流折现法B.成本法C.清算价值法D.股利贴现模型
知识点:心梗 心肌梗死患者心脏破裂最常见部位是A.左房游离壁B.右房游离壁C.室间隔D.左室游离壁E.右室游离壁