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
In malaria-infested areas, many children tend to suffer several bouts of malaria before becoming immune to the disease. Clearly,
In malaria-infested areas, many children tend to suffer several bouts of malaria before becoming immune to the disease. Clearly,
admin
2014-10-21
78
问题
In malaria-infested areas, many children tend to suffer several bouts of malaria before becoming immune to the disease. Clearly, what must be happening is that those children’s immune systems are only weakly stimulated by any single exposure to the malaria parasite and need to be challenged several times to produce an effective immune response. Which of the following, if true, most seriously undermines the explanatory hypothesis?
选项
A、Immediately after a child has suffered a bout of malaria, the child’ s caregivers tend to go to great lengths in taking precautions to prevent another infection, but this level of attention is not sustained.
B、Malaria is spread from person to person by mosquitoes, and mosquitoes have become increasingly resistant to the pesticides used to control them.
C、A certain gene, if inherited by children from only one of their parents, can render those children largely immune to infection with malaria.
D、Antimalaria vaccines, of which several are in development, are all designed to work by stimulating the body’s immune system.
E、There are several distinct strains of malaria, and the body’s immune response to any one of them does not protect it against the others.
答案
E
解析
本题比较简单,我们重点是去反对段落里的解释性假说,即孩子们通过暴露于疟原虫下并与之抗争数次可产生有效免疫反应。如果疟疾种类不止一种,而人们对其中一种的免疫反应并不能保护人体抵抗其他几种,正如(E)所说,那么孩子对疟疾产生免疫力可能还要借助于其他途径,所以(E)Wealken了解释性假说,所以(E)正确;(C)易误选,但(C)讨论的仅仅是特定的一组孩子,而未说明一般的孩子,因此错误。
转载请注明原文地址:https://kaotiyun.com/show/CvtO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
Themind-successconnectionisstrong,andmanyobstaclestooursuccessarealsomental.Somepeoplerelymoreonfacts,while
Inleadingstoriesweanticipatewhatistocome______onourmemoryofwhathasgonebefore.
Tomakeupanobjectivetest,theteacherwritesaseriesofquestions,______hasonlyonecorrectanswer.
TheChinesehaveusedamethodcalledacupuncturetohelpperformoperationsforabout4,000yearswithoutputtingthepatient
Withthepossibleexceptionofequalrights,perhapsthemostcontroversialissueacrosstheUnitedStatestodayisthedeathpe
Perhapsthedaywillcome______peoplewillbeabletobreathecleanairincities.
Beforebuildingahouse,youwillhaveto______thegovernment’spermission.
Magnificentviewsoverthecountrysidehaveoften______peopletowritepoems.
Doyouknowinsurance(保险)?Buyinginsuranceisameansbywhichpeoplecanprotectthemselves【C1】______largelosses.Protection
SamplesfromthefloorofarockshelterinPennsylvaniaweredatedbyanalyzingthecarbontheycontained.Thedatesassignedt
随机试题
男,45岁,近两个月出现肝区疼痛,乏力,消瘦明显,消化不良,腹胀,食欲减退,无黄疸。查体:肝于有肋下可触及3.0cm,移动性浊音(-),诊断肝癌对诊断有重要意义的实验室检查是
某企业依法向法院申请破产,经法院审理发现破产申请受理时该企业尚欠债权人之一甲公司150万元货款,欠当地工商银行贷款1,200万元,贷款时曾提供该企业的l套房产作抵押,该房产现值800万元。该企业曾为乙公司向当地建设银行一笔300万元的贷款作为连带保证人,现
代理人根据人民法院或者指定机关的指定而进行的代理是()。
2004年某中外合资饭店中方单位出具土地使用权,外方出资500万元作为注册资本合作兴办。(1)2004年获利60万元,外商投资者将分得的税后利润20万元购买另一投资者的股权;(2)2005年获利50万元。外商投资者将分得的税后利润20万元增
某位教师对《定义与命题》一课设计如下:一、情境引入以生活情境引入,让学生感受生活中的命题有正确和不正确之分。教师组织播放课件并提出问题,学生独立思考并回答问题。二、探究新知1.教师组织每一位同学先写出一个数学命题,然
设有一个10阶的下三角矩阵A(包括对角线),按照从上到下、从左到右的顺序存储到连续的55个存储单元中,每个数组元素占1个字节的存储空间,则A[5][4]与A[0][0]的地址之差为()。
魏巍在《我的老师》一文中提道:“我们见了她(蔡老师)不由得就围了上去。即使在她写字的时候,我们也默默地看着她,连她握笔的姿势都急于模仿。”这一叙述体现了学生的()特点。
创造力测验的方法有哪些()
在考生文件夹下,打开公司销售数据库selldb,完成如下简单应用:使用一对多表单向导生成一个名为sdedit的表单。要求从父表dept中选择所有字段,从子表st表中选择所有字段,使用“部门号”建立两表之间的关系,样式为阴影式;按钮类型为图片按钮;排
MostpeoplewouldbeimpressedbythehighqualityofmedicineavailabletomostAmericans.Thereisalotofspecialization,a
最新回复
(
0
)