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
The record of the past half century has established, I think, the two general principles about human disease. First, it is neces
The record of the past half century has established, I think, the two general principles about human disease. First, it is neces
admin
2012-07-17
20
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.
What is the main idea of the passage?
选项
A、Scientific appraisal shows that multifactorial diseases are often due in part to environmental conditions.
B、In the past half century, scientists have been able to find only a few principles that apply to all diseases.
C、Each disease has single underlying mechanism that must be understood before the disease can be cured.
D、Many diseases that were once life-threatening can now be cured by antibiotics.
答案
B
解析
文中第一句为主题句,开门见山地点明了文章的主题:“我认为,过去的半个世纪的记录已经确立了两条有关人类疾病的普遍原则。”此后的内容均是对这两条原则的进一步阐述,所以选项B正确。A“科学的评价说明,多重因素造成的疾病的病因通常是部分由于环境条件的影响”。这句话只是对第二条原则的阐发,并不是文章的主题。C“每种疾病都有单独的内在机理,因此在治疗疾病之前必须先弄清这种机理”。这只是文中提到的第一条原则,也不是文章的主题。D“曾经对生命构成威胁的许多疾病现在都能用抗生素治愈”,文中并未提及。
转载请注明原文地址:https://kaotiyun.com/show/poXO777K
0
在职攻硕英语联考
相关试题推荐
Threeweeksafterthesuicidebombing,thepolicewerestillhuntingforbombersfortheybelievemorewere______.
Thedaywasbreakingandpeoplebegantogotoworksothemurdererwasunableto______ofthebody.
IntheUnitedStatesandinmanyothercountriesaroundtheworld,therearefourmainwaysforpeopletobe【C1】______aboutdeve
IntheUnitedStatesandinmanyothercountriesaroundtheworld,therearefourmainwaysforpeopletobe【C1】______aboutdeve
AnIndiananthropologist,ChandraThapar,madeastudyofforeigncultures,whichhadcustomssimilarto【C1】______ofhisnative
AnIndiananthropologist,ChandraThapar,madeastudyofforeigncultures,whichhadcustomssimilarto【C1】______ofhisnative
Ingeneral,matterswhichlieentirelywithinstatebordersarethe______concernofstategovernments.
Iampreparedtomakesome______onminordetails,butIcannotcompromiseonfundamentals.
AIDSisaglobalproblemthatdemandsaunified,worldwidesolution,whichisnotonlytheresponsibilityofnationinwhichAID
Smog-chokedSouthernCaliforniaAdemandsthem.It’sacarforpeoplewhoneverwanttogotoBagasstationagain.Butthefact
随机试题
公募基金定期披露的报告包括()。Ⅰ.月度报告Ⅱ.季度报告Ⅲ.半年度报告Ⅳ.年度报告
WhichofthefollowingdescriptionsofThomasHardyiswrong?()
男孩,15岁。急起畏寒、发热2天,伴精神萎靡、烦躁不安。查体:全身皮肤黏膜有广泛的瘀点、瘀斑,脑膜刺激征阴性。血象:WBC20.0×109/L,NO.90,LO.10。为快速诊断提供依据,应做哪项检查
施工资源管理任务中,“确定资源的选择”不包括( )工作。
( )使得每项工程都要根据实际情况制定健康安全与环境管理计划。
个人银行储蓄账户既可以办理现金存取业务,也可以办理转账结算业务。()
旅游团北戴河时,一游客提出希望单独划船出海,导游员应()
“蜗居”、“蚁族”这两个词非常__________地反映出以“80后”为主的中国年轻一代既有目标又充满困惑、既努力奋斗又充满__________地“混”在大城市的实况。他们心中更大的信仰,应该是对未来成功和幸福的强烈渴望吧。填入划横线部分最恰当的一项是(
Withoutcomputers,muchoftheadvancedtechnology______.
MediaSelectionforAdvertisementsA)Afterdeterminingthetargetaudienceforaproductorservice,advertisingagenciesmusts
最新回复
(
0
)