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
68
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. "
【C13】
选项
A、commit
B、emit
C、permit
D、transmit
答案
B
解析
词义辨析题。commit实施,通常搭配suicide(自杀)和crime(犯罪);emit放射;permit允许;transmit传播,广播。
转载请注明原文地址:https://kaotiyun.com/show/2UmK777K
0
专业英语四级
相关试题推荐
Scientistssaythatmanyfactors______greatchangesintheweather.
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereag
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythepotentialof
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythepotentialof
随机试题
复发性口腔溃疡较少发生的部位是
A.非处方药B.处方药C.非处方药、处方药D.乙类非处方药消费者可以自行判断购买的药品是()。
一批货物由甲公司运往中国天津港,运输合同适用《海牙规则》。运输途中因雷击烧毁部分货物,其余货物在目的港被乙公司以副本提单加保函提走。丙公司为该批货物正本提单持有人。根据《海牙规则》和我国相关法律规定,下列哪些选项是正确的?()
某分部工程双代号网络计划如下图所示,图中错误为()。
2017年,美国的B银行有资产2000万美元,负债5000万美元,均为浮动利率型,后因市场利率上升3个百分点,导致该银行资产收益增加60万美元(3%×2000),负债支付增加150万美元(3%×5000),从而银行利润减少了90万美元(60—150),此时
甲、乙、丙、丁按份共有一辆汽车跑长途运输,四人各占1/4的份额。2009年2月1日,丁拟将自己1/4的份额作价10万元转让给戊。丁将该事项通知了甲、乙、丙,三人均表示反对,但无人主张同等条件下的优先购买权,于是丁将自己的份额转让给戊。2009年
根据对电气主接线的基本要求,设计电气主接线时,首先要考虑()。
关于法律至上原则,下列说法能够成立的有
信息系统的概念结构如下图所示,正确的名称顺序是______。
Thephysiciansinahospitalformthecoreofthemedicalstaff.Buttheycouldn’tprovideeffectivemedicalcaretotheirpatie
最新回复
(
0
)