首页
登录
职称英语
[originaltext]Italian scientists have raised new health concerns about the safe
[originaltext]Italian scientists have raised new health concerns about the safe
游客
2023-12-25
37
管理
问题
Italian scientists have raised new health concerns about the safety of using mobile phones, with research showing radio waves from the handsets makes cancerous cells grow more aggressively. When Fiorenzo Marinelli and his colleagues at the National Research Council in Bologna exposed leukemia cells in the laboratory to 48 hours of continuous radio waves they initially killed the cancer cells but then made the surviving tumor cells replicate more rapidly.
We don’t know what the effects would be on healthy human cells, Marinelli told New Scientist magazine. In the Italian study, after 24 hours 20 percent more leukemia cells died than healthy cells but longer exposure to the radio waves triggered genes in the surviving cancer cells to divide aggressively.
The results of the study do not show any direct threat to human health but they support the belief of some scientists who say radiation can damage DNA and destroy the cell repair system, thus making tumors more deadly. But animal studies, including recent research by Australian scientists at the Institute of Medical and Veterinary Science in Adelaide, have shown that radiation from mobile phones does not trigger the growth of tumors.
The WHO (i.e., The World Health Organization) has called for more research into the potential health hazards of mobile phones and has urged people to limit their use of them. A British government inquiry, which concluded that there was no evidence that mobile phones are a danger to health, has advised parents to discourage their children, whose brains are still developing, from using them excessively.
选项
A、1.2 million.
B、1.4 million.
C、0.8 million.
D、2 million.
答案
C
解析
掌握数字信息,并能够作简单推算。
转载请注明原文地址:https://tihaiku.com/zcyy/3303053.html
相关试题推荐
Swedishscientistscenteredtheresearchon85peoplewhoownbordercolliesor
ManyAmericanshopingtostayhealthysetadailygoalof10,000steps,orabout
Scientistsarestillworkingtowardalong-soughtgoal—abloodtesttoidentify
Theresearchershopethattheirhealthcareprogramwillbepopularized.A、正确B、错
30%ofpatientsinhomehealthcarehavemalnutritionissues.A、正确B、错误B原文说:The
Goodnutritionmaybekeytogettingpatients’healthback.[originaltext]Wh
[originaltext]Thesearchforoneoflife’sgreatestgoals,happiness,iswh
[originaltext]Whichismorepopular—coffeeortea?IfyouareonTeamC
[originaltext]Areyouacatpersonoradogperson?Peoplearoundtheworld
Withtheadvancementofscience,scientistsareabletofindoutthepathsofst
随机试题
______(在某种程度上纽约本身就是一个世界)becausemanydifferentracesandethnicgroupsintermi
Teachingchildrentoreadwellfromthestartisthemostimportanttaskof
Ifthesportsmeet(putoff)______tilltomorrow,wewillgoontohaveourclas
IPv6的可聚合全球单播地址前缀为()。A.010 B.011 C.00
降低颅内高压最有效而易行的方法是A.施行人工冬眠低温 B.使用脱水剂或利尿剂
( )是指企业年金计划筹集的资金及其投资运营收益形成的企业补充养老保险基金。A
A.-50 B.0 C.10 D.50
商业银行当前的外汇敞口头寸如下:瑞士法郎空头20,日元多头50,欧元多头100,
枸杞子的性状鉴别特征是A.呈纺锤形或椭圆形 B.表面红色或暗红色 C.顶端有
下列关于率的标准误的叙述,错误的是A.样本率的标准差称率的标准误 B.率的标准
最新回复
(
0
)