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
Another common type of reasoning is the search for causes and results. We want to know whether cigarettes really do cause lung c
Another common type of reasoning is the search for causes and results. We want to know whether cigarettes really do cause lung c
admin
2011-03-01
66
问题
Another common type of reasoning is the search for causes and results. We want to know whether cigarettes really do cause lung cancer, what causes malnutrition, the decay of cities, or the decay of teeth. We are equally interested in effects: what is the effect of sculpture or lead in the atmosphere, of oil spills and raw sewage in rivers and the sea, of staying up late on the night before an examination?
Causal reasoning may go from cause to effect or from effect to cause. Either way, we reason from what we know to what we want to find out. Sometimes we reason from an effect to a cause and then on to another effect. Thus, if we reason that because the lights have gone out, the refrigerator won’t work, we first relate the effect (lights out) to the cause (power off) and then relate that cause to another effect (refrigerator not working). This kind of reasoning is called, for short, effect to effect. It is quite common to reason through an extensive chain of causal relations. When the lights go out we might reason in the following causal chain: lights out — power off — refrigerator not working — temperature will rise — milk will sour. In other words, we diagnose a succession of effects from the power failure, each becoming the cause of the next.
Causes are classified as necessary, sufficient, or contributory. A necessary cause is one which must be present for the effect to occur, as combustion is necessary to drive a gasoline engine. A sufficient cause is one which can produce an effect unaided, though there may be more than one sufficient cause: a dead battery is enough to keep a car from starting, but faulty spark plugs, or an empty gas tank will have the same effect. A contributory cause is one which helps to produce an effect but cannot do so by itself, as running through a red light may help cause an accident, though other factors — pedestrians or other cars in the intersection — must also be present.
In establishing or refuting a causal relation it is usually necessary to show the process by which the alleged cause produces the effect. Such an explanation is called a causal process.
A necessary cause is ______.
选项
A、one without which it is impossible for the effect to occur
B、one of the causes that can produce the effect
C、one that is enough to make the effect occur
D、None of them.
答案
A
解析
见第三段第二句:A necessary cause is one which must be present for the effect to occur,…
转载请注明原文地址:https://kaotiyun.com/show/XOkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whenmostofusthinkaboutlanguage,wethink【C1】______aboutwords.Thus,thehardest【C2】______oflearningaforeignlanguagem
Whenmostofusthinkaboutlanguage,wethink【C1】______aboutwords.Thus,thehardest【C2】______oflearningaforeignlanguagem
Whenmostofusthinkaboutlanguage,wethink【C1】______aboutwords.Thus,thehardest【C2】______oflearningaforeignlanguagem
AspeciallabattheUniversityofChicagoisbusyonly【C1】______.Itisadream【C2】______whereresearchersareatwork【C3】___
AspeciallabattheUniversityofChicagoisbusyonly【C1】______.Itisadream【C2】______whereresearchersareatwork【C3】___
Aseverytravelersoonfindsout,itisimportanttoknowthelocaltime.【C1】______untilthelastcentury,everytownandvillag
Youarerequiredtowritealetterofinvitationofabout100wordstoMr.Wood—theauthorofAStudyofEnglishIntonation.You
HowlongdidittakeforalettertogettotheUSAsixyearsago?
OneofthemoststrikingthingsaboutAmericansisthattheyseemofexpectingeveryonetolikethem【C1】______.theygo.America
Jackson:Viewedfromascientist’sstandpoint,alloftheenergycontainedinfueleithernoworinthefuturebecomesheat.
随机试题
下列属于纪传体通史是()
牙周袋病理形成始于()
甲出资15万元,分别从乙、丙等处购买材料,并雇用丁建筑公司,盖成了一栋楼房,经登记取得房屋产权证。甲取得该房屋所有权的方式是哪种?()
下列关于220kV及以上的变电所所用变压器是否选择有载调压变压器的叙述中正确的有哪些?
赵某是丙有限合伙企业的有限合伙人,后因合伙企业经营不景气,赵某提出退伙,赵某退伙后对基于其退伙前的原因发生的企业债务,不再承担责任。()
_______________,万方多难此登临。(杜甫《登楼》)
下列的哪一项正确描述了流量控制?()
下面哪个学派的货币需求的决定因素包括了人的偏好因素?()
下面关于直线控件的叙述中正确的是
Americanthisyearwillswallow15,000tonsdrugsofaspirin,oneofsafestandmosteffectiveinventedbyman.【M1】______
最新回复
(
0
)