首页
登录
职称英语
Drugs can be divided into three main groups: those that a person can buy wit
Drugs can be divided into three main groups: those that a person can buy wit
游客
2023-07-25
26
管理
问题
Drugs can be divided into three main groups: those that a person can buy without a prescription. those that a person needs a doctor’s prescription for, and those that are illegal.
Two popular nonprescription drugs are caffeine (咖啡因) and alcohol. Caffeine is found in coffee, tea, chocolate, and cola drinks. It is a mental stimulant; it stimulates the central nervous system and makes people feel alert. Students, for example, often find they can study better if they have a cup of coffee. On the other hand, caffeine can also make people nervous and irritable. If people drink too much caffeine, they may have trouble sleeping.
Alcohol is a depressant; it depresses the central nervous system. When people drink, they have less control over their actions. They cannot walk in a straight line and they cannot drive as well as when they are alcohol-free in their blood. People who drink a great deal sometimes fall into a deep sleep. Later, they may wake up with a strong headache.
In addition to these nonprescription drugs, there are two major categories of prescription drugs : stimulants and depressants. The depressants include morphine(吗啡), which is used as a pain killer. The most common stimulants are amphetamines (苯丙胺). Doctors used to prescribe amphetamines as diet pills ; however, they found that amphetamines can have serious side effects. They can make a patient very nervous, and when the drug wears off, the patient may feel very depressed. Doctors still give amphetamines to people with narcolepsy, an illness that causes sudden, uncontrollable attacks of sleep.
The largest class of illegal drugs are hallucinogens, drugs that .change the way a person thinks and cause hallucinations, or visions. For some people, marijuana(大麻) is a mild hallucinogen. Marijuana generally brings a pleasant feeling. However, when people smoke marijuana, they sometimes can not concentrate very well on their activities, such as their work or driving. [br] Mention the different functions of caffeine and alcohol.
选项
答案
Caffeine stimulates nervous system while alcohol depresses it. 或One stimulates and the other depresses nervous system
解析
这句问题要求我们比较两者之间的不同。回答这类问题往往不是三言两语能说清楚的。我们要抓住最根本的来回答,千万别把原文整句整句地当答案抄。写得再好的答案如果过长,很可能会引起阅卷人的反感。在此,我们把nervous system作两个动词的宾语既省字数,也让人一看就明白。
转载请注明原文地址:https://tihaiku.com/zcyy/2867221.html
相关试题推荐
Thiswould____________(证明非常有益)toapersonwhomayhavelostabodyorgansucha
[originaltext]TherearethreegroupsofEnglishlearners:beginners,interm
[originaltext]TherearethreegroupsofEnglishlearners:beginners,interm
[originaltext]TherearethreegroupsofEnglishlearners:beginners,interm
[originaltext]TherearethreegroupsofEnglishlearners:beginners,interm
[originaltext]An"earlybird"usedtobeapersonwhowasawakeearlyandb
Learningdoesnothappenpassively.Itisanactivitywhichapersondoes.I
Learningdoesnothappenpassively.Itisanactivitywhichapersondoes.I
Learningdoesnothappenpassively.Itisanactivitywhichapersondoes.I
Learningdoesnothappenpassively.Itisanactivitywhichapersondoes.I
随机试题
Thecompletionin1925oftheHollandTunnel,linkingManhattanwithNewJersey’
1986年全国人大常委会副委员长班禅喇嘛在西康地区大法会上教诲信徒们,要爱惜民族团结,维护祖国统一。在中国,公民的信仰自由受到法律保护。目前全
It______aboutseveno’clockwhenTomreturnedhomeforitwasalreadydarkoutsi
WhydidBillgivethisadvice?BecauseTomalwaysdoes______ofwhatpeoplehav
中外双方拟组建不具备法人资格的中外合作经营企业,商定中方提供的合作条件是提供土地
1.事故经过某日上午6时左右,塔式起重机司机陆某和其他施工人员陆续进场开始施工
患者女,24岁,烤瓷全冠试戴后黏固时,患牙出现疼痛,以下原因不可能的是A.消毒药
A.B所受摩擦力始终不可能为零,摩擦力方向时而沿斜面向上时而沿斜面向下 B.B
萧某对李某作出承诺:只要李某把邻居家的小狗偷来,就付给酬金200元。该行为属于:
证券公司经营融资融券业务应当具备的条件有()。A:有完善的融资融券业务管理制度和
最新回复
(
0
)