首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Scientists who believe cell phones are dangerous have been throwing out hypotheses to explain away the negative results. Maybe s
Scientists who believe cell phones are dangerous have been throwing out hypotheses to explain away the negative results. Maybe s
admin
2012-05-04
48
问题
Scientists who believe cell phones are dangerous have been throwing out hypotheses to explain away the negative results. Maybe something about the【C1】______animals raised their rates of cancer or sperm problems, so【C2】______the exposed animals didn’t seem to be harmed. Maybe the studies should have used pulsed,【C3】______radiation rather than a continuous beam, the better to【C4】______the way we actually use mobile phones. Maybe it matters【C5】______the lab animals are zapped【C6】______in a device like a Ferris wheel or while【C7】______around in cages. On the other hand, if these details do【C8】______, maybe that in itself is significant.
Scientists who【C9】______claims that cell-phone radiation is causing an epidemic of brain cancer【C10】______that there isn’t any mechanism.【C11】______textbook biophysics, only radiation that has enough energy to ionize molecules—that is, knock off electrons—can【C12】______cancer. Cell phones don’t【C13】______energy great enough to ionize molecules in living cells. Their【C14】______is "far below the cancer energy threshold,"【C15】______physicist Robert Park of the University of Maryland, who often【C16】______junk science. But whenever he makes that【C17】______in his What’s New e-newsletter, he gets【C18】______with angry responses insisting there are other ways low-energy radiation can【C19】______. "I don’t like cell phones and I don’t like writing about cell phones," says Park, "【C20】______the damned issue just won’t go away. "
【C14】
选项
A、communication
B、distribution
C、permission
D、radiation
答案
D
解析
上下文题和词义辨析题。“这些放射线远低于致癌能源的最低限量”。communication交流;distribution分配;permission允许;radiation放射。
转载请注明原文地址:https://kaotiyun.com/show/9UmK777K
0
专业英语四级
相关试题推荐
TheRoleofReligioninKoreanHigherEducationItiswidelybelievedthatreligioustraditions,suchasBuddhism,Confucia
TheRoleofReligioninKoreanHigherEducationItiswidelybelievedthatreligioustraditions,suchasBuddhism,Confucia
TheRoleofReligioninKoreanHigherEducationItiswidelybelievedthatreligioustraditions,suchasBuddhism,Confucia
KoehlersaidinaninterviewwithaGermannewspaperthathedidn’tbelieve
KoehlersaidinaninterviewwithaGermannewspaperthathedidn’tbelieve
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
AgeismAmericansocietyhasbeendescribedasmaintainingastereotypicandoftennegativeperceptionofolderadults.This
随机试题
Shespentmostoflastweek______backwardsandforwardsbetweenherhomeandthehospital.
关于酶的叙述正确的是
在空气中易潮解,并吸收空气中的二氧化碳,而后在干燥的空气中又会风化的固体是
A.甲硝唑B.吡喹酮C.乙胺嗪D.甲苯达唑E.氯硝柳胺抗血吸虫病药
幻觉是精神分裂症患者最常见的感知觉障碍,其中最常见的幻觉是()。
用未漂白纱线与浅蓝色纱涤织成的机织物,涤纶短纤50%,醋酸短纤25%,粘胶短纤25%,170克/平方米
一般来说,家庭建立现金储备包括()。
欧债危机在2012年继续恶化,_______了世界其他国家的经济增长。美国虽然没有像欧洲那样陷入第二轮的经济衰退,但美国的经济增长仍然非常_______,只有2%左右。欧债危机、美国的“财政悬崖”及由于钓鱼岛问题导致的日趋恶化的中日经贸关系,有可能____
计算积分其中∑为球面x2+y2+z2=4.
Thereisnodoubtthatadults,andevenhighlyeducatedadults,varygreatlyinthespeedandefficiencyoftheirreading.Some
最新回复
(
0
)