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
Do strong electric currents, by means of the electromagnetic fields that accompany them, cause cancer in people who live and wor
Do strong electric currents, by means of the electromagnetic fields that accompany them, cause cancer in people who live and wor
admin
2014-10-21
45
问题
Do strong electric currents, by means of the electromagnetic fields that accompany them, cause cancer in people who live and work nearby? Telephone line workers, who work near such currents every day, can provide a test case. They show elevated levels of brain cancer; therefore, the hypothesis of electromagnetic causation is supported. Which of the following, if true, most seriously weakens the argument?
选项
A、Burying power lines and other measures to protect the public from such electromagnetic fields would be prohibitively expensive.
B、Telephone line workers are exposed to levels of chemical solvents high enough to cause brain cancer.
C、High exposure to strong electromagnetic fields is correlated with a slightly higher-than-normal incidence of childhood leukemia, which is a form of cancer.
D、Public health officials who found that a group of different illnesses in people living near a power substation could not reliably be attributed to its electromagnetic field were accused of covering up the facts.
E、Telephone line workers, like most people have electrical appliances at home, and most electrical appliances, when turned on, are surrounded by an electromagnetic field of some measurable level.
答案
B
解析
本题属于典型的“B,A”类型的反对。反对思路是“除了A之外有其他原因导致B”。(B)说明电话线工人接触了过量的化学溶液,而这足以导致脑癌,表明“过量的化学溶液导致脑癌”,很好地用“有他因”来反对上面的结论。(A)只是提供了一种不可行的解决方案,不能起到反对的作用;(C)谈的是另外一个对象“白血症”与“脑癌”无关;(D)什么也说明不了;(E)起到了支持作用。
转载请注明原文地址:https://kaotiyun.com/show/WdtO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
Peoplewhoare______towoolshouldn’twearwoolenclothing.
Themulti-billion-dollarWesternpopmusicindustryisunderfire.ItisbeingblamedbytheUnitedNationsforthedramaticris
Sean’sstrongloveforhiscountryis______inhisrecentlypublishedpoems.
Thequestion______atthemeetingtomorrowisveryimportant.
Americansthisyearwillswallow15000tonsofaspirin,oneofthesafestandmosteffectivedrugsinventedbyman.Asthemost
IntheUnitedStates,30percentoftheadultpopulationhasa"weightproblem".Tomanypeople,thecauseisobvious:theyeat
Theteacherspokesofastthatitwashardforthestudentsto______whathewassaying.
Asanymiddle-classparentknows,unpaidworkexperiencecangiveyoungstersavaluableintroductiontoasecurejob.Thegovern
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?Thesearetwoimportantqu
Whenaconsumerfindsthatanitemsheorheboughtisfaultyorinsomeotherwaydoesnotliveuptothemanufacturer’sclaim
随机试题
可判定类风湿关节炎病人处于活动期的主要表现是
凉膈散治疗脾胃积热口疮的机理是
右心功能不全常见并发症不包括
某企业2000年产品A的投入产出情况如下表: 2002年计划3种产品的库存量保持不变,销售量分别比2000年增加30%、20%和40%。 问题1.叙述消费系数法的预测步骤。2.运用消费系数法预测2002年该企业产品A的总产出量(最后结果保留
下列不属于货币政策操作目标的是()
在一桩涉嫌贩卖冰毒的案件中,证人小康起了关键证明作用,下列表述错误的是()。
微博营销(兰州大学,2015;北京交通大学,2016)
喜欢甜味的习性曾经对人类有益,因为它使人在健康食品和非健康食品之间选择前者。例如,成熟的水果是甜的,不成熟的水果则不甜,喜欢甜味的习性促使人类选择成熟的水果。但是,现在的食糖是经过精制的。因此,喜欢甜味不再是一种对人有益的习性,因为精制食糖不是健康食品。
A是n阶矩阵,|A|=3.则|(A*)*|=()
A、Doinghomework.B、Fine,thankyou.C、Verygood.D、Writingabook.B问句为日常用语,询问他人近况。答语应为“Fine,thankyou.”(我很好,谢谢。)故选B。
最新回复
(
0
)