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
Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistakenly believ
Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistakenly believ
admin
2017-08-15
42
问题
Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistakenly believe the term drug refers only to some sort of medicine or an illegal chemical taken by drug addicts. They don’t realize that familiar substances such as alcohol and tobacco are also drugs. This is why the more neutral term substance is now used by many physicians and psychologists. The phrase "substance abuse" is often used instead of "drug abuse" to make clear that substances such as alcohol and tobacco can be just as harmfully misused as heroin and cocaine.
We live a society in which the medicinal and social use of substances (drugs) is pervasive: an aspirin to quiet a headache, some wine to be sociable, coffee to get going in the morning, a cigarette for the nerves. When do these socially acceptable and apparently constructive uses of a substance become misuses? First of all, most substances taken in excess will produce negative effects such as poisoning or intense perceptual distortions. Repeated use of a substance can also lead to physical addiction or substance dependence. Dependence is marked first by an increased tolerance, with more and more of the substance required to produce the desired effect, and then by the appearance of unpleasant withdrawal symptoms when the substance is discontinued.
Drugs (substances) that affect the central nervous system and alter perception, mood, and behavior are known as psychoactive substances. Psychoactive substances are commonly grouped according to whether they are stimulants, depressants, or hallucinogens. Stimulants initially speed up or activate the central nervous system, whereas depressants slow it down. Hallucinogens have their primary effect on perception, distorting and altering it in a variety of ways including producing hallucinations. These are the substances often called psychedelic (from the Greek word meaning "mind manifesting") because they seemed to radically alter one’s state of consciousness.
Physical dependence on certain substances results from ______.
选项
A、uncontrolled consumption of them over long periods of time
B、exclusive use of them for social purposes
C、quantitative application of them to the treatment of diseases
D、careless employment of them for unpleasant symptoms
答案
A
解析
本题可参照文章第2段的倒数两句。从中可知,反复使用一种物质也会导致对该物质的生理上瘾或对药物依赖;依赖性起初表现为耐受性不断增强,需要越来越多的药物才能获得所需的效果,一旦停用,就会产生不舒服的症状。据此可知,对某些物质的生理依赖,是由于人们长时间、大量使用这些物质所造成的。A项与文章的意思相符;B项不正确,文中是说“喝一点酒以增进友谊”,但并没有说这会导致对酒的生理依赖;C项和D项明显不是对某些物质生理依赖的原因。综上所述,只有A项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/wdFO777K
0
考博英语
相关试题推荐
Today’sworkerisnolongerwillingtoworkinanauthoritariananddehumanizingenvironment.Workerswantmeaningintheirwork
Everymorning,Alliewakesupandaccompaniesherfriendtothewashroom.Sheturnsonthelight,soapsupawashcloth,andbegi
Whenwelistentomusic,weareeasily_____ofeventsinthepast.
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
In____IwishIhadthoughtaboutalternativecoursesofaction.
ToproducetheupheavalintheUnitedStatesthatchangedandmodernizedthedomainofhighereducationfromthemid-1860’stot
Inrecentyears,therehasbeenasteadyassaultonsaltfromthedoctors:Saltisbadforyou—regardlessofyourhealth.Poli
Oneofthebiggest______totheeconomicreformofthisareahasbeenthelackofaccesstointernationalmarkets.
Thenuclearageinwhichthehumanraceisliving,andmaysoonbedying,beganforthegeneralpublicwiththedroppingofana
Theskipperwasnotwillingtorisk______hisshipthroughthestraitsuntilhecouldseewherehewasgoing.
随机试题
母子血型关系哪组可能发生新生儿溶血症,母子
与上颌窦关系最密切的是哪一组牙对面容影响最大的是哪一组牙
亚急性感染性心内膜炎风湿病皮肤病变
某公司2018年年初拟对M公司进行收购(采用购股方式),根据预测分析,得到并购重组前该公司2017年及并购后M公司2018年至2021年的相关数据,如下表所示:预计2022年及以后的自由现金流量将保持与2021年一致,测知M公司并购重组后的加权资本成本
进行可转换债券投资时,较好的投资时机不包括()。
明成祖登基后曾派郑和出使西洋以加强同海外的联系,下列关于郑和下西洋说法正确的是()。
釉质龋最早出现的病理变化是()。
Peoplewenttothesupermarketto______.Mrs.White’shusbandtriedto______.
下面的两个关系中,职工号和部门号分别为职工关系和部门关系的主键(或称主码)。职工(职工号,职工名,部门号,职务,工资)部门(部门号,部门名,部门人数,工资总额)在这两个关系的属性中,只有一个属性是外键,它是()。
AIDSthreatensnotonlylivesbutalso-inpoorcountries-economicdevelopment.By【C1】______mainlyatadults20to49yearsold
最新回复
(
0
)