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
10
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、precautious
B、skeptical
C、approving
D、indifferent
答案
A
解析
正确识别某些重要表达后面蕴涵的意义。
转载请注明原文地址:https://tihaiku.com/zcyy/3303055.html
相关试题推荐
Thescientistcontestedtheassumptionofpreviousscientiststhatthefateofh
Eventomanyscientists,theproblemsresultedfromtheconflictbetweeneconomi
Theanswerstotheproblem,thescientistssay,istobuilduptheimmunesystem
Accordingtosomescientists,humanbeingsdopossesssomesuper-naturalpower.A
Tomostscientists,sciencesnevergenerateartsdirectlyoutofthemselves.A、gi
Itissaidthatalmostallvegetableshavingabitter______aregoodtohealth.A、
SARSisstilljeopardizingpeople’slivesbeforescientistscomeupwithaneffe
Followingthenewdiscovery,thescientistshadfinallyprecludedthedoubtson
Nateconcernshisgirlfriendsomuchthathewouldjumpoverthehoopsforher.A
Themayorclaimedthatheresignedbecauseofahealthcrisis,butsomebodylear
随机试题
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_100[/audioFiles]Global
[originaltext]M:What’shappeningwithyouressay?W:Well,I’vemadeastarto
D
在施工路面的标线时应在撒布( )。 A、水泥 B、荧光粉 C、玻璃珠
A.苯丙酸诺龙 B.炔诺酮 C.丙酸睾酮 D.醋酸氢化可的松 E.醋酸地
根据变电一次设备标准缺陷库,集合式电力电容器本体三相电容不平衡,缺陷的分类依据有
房地产投资决策问题可以转换为实物期权定价问题,是因为在不确定性条件下,房地产投资
根据《建筑抗震设计规范》(GB50011—2010)饱和的砂土或粉土(不含黄
外币国债也是以本币为面值发行。 ()
单利的计算始终以最初的本金为计算收益的基数,而复利则以本金和利息为基数计息,从而
最新回复
(
0
)