首页
登录
职称英语
The record of the past half century has established, I think, the two genera
The record of the past half century has established, I think, the two genera
游客
2025-03-19
26
管理
问题
The record of the past half century has established, I think, the two general principles about human disease. First, it is necessary to know a great deal about underlying mechanisms before one can really act effectively; one had to know that the pneumococcus (肺炎球菌) causes lobar pneumonia (球形肺炎) before one could begin thinking about antibiotics.
Second, for every disease there is a single key mechanism that dominates all the others. If one can find it, and think one’s way around it, one can control the disorder. This generalization is harder to prove and arguable—it is more like a strong hunch (直觉) than a scientific assertion— but I believe that the record thus far tends to support it. The most complicated, multicell, multi-tissue, and multiorgan diseases I know are tertiary syphilis, chronic tuberculosis, and pernicious anemia. In each, there are at least five major organs and tissues involved, and each appears to be affected by a variety of environmental influences. Before they came under scientific appraisal, each was what we now call a "multifactorial disease. " And yet, When all the necessary facts were in it was clear that by simply switching off one thing—the spirochete, the tubercle bacillus, or a single vitamin deficiency—the whole array of disordered and seemingly unrelated pathological mechanisms could be switched off, at once. [br] The author uses the example of lobar pneumonia to show that________.
选项
A、understanding the cause of a disease precedes curing it
B、the record of the past half century is one of medical progress
C、antibiotics let to an understanding of underlying disease mechanisms
D、many diseases are now called multifactorial
答案
A
解析
文中第一段第二句是个并列句,两个分句都含有“before”一词。第一个分句阐明第一条普遍原则,第二个分句进行了进一步的举例说明,即“人们在考虑使用抗生素之前,必须弄清肺炎球菌是引起球形肺炎的原因”。因此正确答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/4003311.html
相关试题推荐
Seventeenth-centuryhousesincolonialNorthAmericaweresimplestructures
Seventeenth-centuryhousesincolonialNorthAmericaweresimplestructures
GenerationsofAmericanshavebeenbroughtuptobelievethatagoodbreakfa
GenerationsofAmericanshavebeenbroughtuptobelievethatagoodbreakfa
Therecordofthepasthalfcenturyhasestablished,Ithink,thetwogenera
Therecordofthepasthalfcenturyhasestablished,Ithink,thetwogenera
Theagriculturalrevolutioninthenineteenthcenturyinvolvedtwothings:t
Theagriculturalrevolutioninthenineteenthcenturyinvolvedtwothings:t
Theagriculturalrevolutioninthenineteenthcenturyinvolvedtwothings:t
Videorecordersandphotocopiers,eventicketmachinesontherailways,ofte
随机试题
Themajorityofsuccessfulseniormanagersdonotcloselyfollowtheclassic
Talkischeapwhenitcomestosolvingtheproblemoftoo-big-to-failbanks.
[originaltext]W:Hello,Dr.Christianson.M:Hello,Cathy,whatcanIdoforyo
某软件项目的活动图如下图所示,其中顶点表示项目里程碑,连接顶点的边表示活动,边上
基金管理公司内部控制制度的组成部分不包括()。A.内部控制大纲 B.基本管理
药材阳春砂的主产地是A.广东B.安徽C.山东D.江西、四川、湖北等E.印度尼西亚
设备构架接地引下线有一根断裂,被盗属于()(A)一般缺陷(B)重大缺陷
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
根据《最高人民法院关于适用〈中华人民共和国保险法〉若干问题的解释(四)》(以下简
肾不纳气喘证可见下列哪些症状A.喘促日久 B.动则喘甚 C.呼多吸少 D.
最新回复
(
0
)