题目内容
（请给出正确答案）
A、hydralazine; losartan; sodium nitroprusside; amlodipine
B、captopril; hydralazine; losartan; sodium nitroprusside
C、captopril; losartan; sodium nitroprusside; amlodipine
D、propranolol; losartan; sodium nitroprusside; amlodipine
E、propranolol; hydralazine; losartan; sodium nitroprusside
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更多“Drugs that produce vasodilation by acting directly on vascular smooth muscle include”相关的问题
A、Potency
B、Efficacy
C、Median effective dose
D、Therapeutic index
MDMA differs from the classic drugs in that ______.
A．it doesn't produce physical withdrawal symptoms
B．it is an addictive substance
C．its effect upon the body increases quickly
D．it fails to excite the mind of the users
A．The athletes using the drugs will be caught by the proper authorities and ejected from the race.
B．The athletes using the drugs will have a better chance of winning the race.
C．The athletes using the drugs will use steroid precursors that produce effects similar to those of androgenic drugs but are not technically steroids.
D．The athletes using the drugs are more likely to be professionals in their sport than the athletes who do not use such drugs.
E．The athletes using the drugs will be more likely to use any means possible to win the race, including intentional sabotage of the other racers' equipment.
According to the passage, it may soon be possible
A．to make something as good as human skin.
B．to produce drugs without side effects.
C．to transplant human organs.
D．to make artificial hearts and eyes.
A. find more curative rays
B. produce more curative drugs
C. develop more powerful diagnostic instruments
D. see through five inches of living flesh as least
According to Paragraph 3, which of the following statements is true？
A．Antigens are entities produced by a person's immune system after vaccination.
B．Antigens will directly kill any flu virus invading a vaccinated person.
C．A flu vaccine contains the same components of prescribed drugs curing flu.
D．Antigens can help prevent flu by stimulating human bodies to produce antibodies.
Drug Abuse
1 The term "drug abuse" most often refers to the use of a drug with such frequency that it causes physical or mental harm to the user or impairs social functioning. Although the term seems to imply that users abuse the drugs they take, in fact, it is themselves or others they abuse by using drugs.
2 Pharmacologists, who study the effects of drugs, classify psychoactive drugs according to what they do to those who take them. Drugs that speed up signals passing through the nervous system, which is made up of the brain and spinal cord, and produce alertness and arousal and, in higher doses, excitability, and inhibit fatigue and sleep, are called stimulants. Drugs that retard, slow down, or depress signals passing through the central nervous system and produce relaxation, a lowering of anxiety, and, at higher doses, drowsiness and sleep, are called depressants. One distinct kind of depressants are those which dull the mind's perception of pain and in medicine are used as painkillers, or analgesics. These drugs called narcotics.
3 It is not always easy to determine exactly when simple drug use becomes abuse. Thus it is far easier to study who uses illegal psychoactive drugs than it is to study who abuses them. When re searchers describe patterns of drug abuse, then, they usually describe the more general phenomenon of drug use, whether it leads to abuse or not.
4 Drinking on the job is a social and economic problem with a long history. With the growing popularity of illegal drugs in the 1960s and 1970s, it was to be expected that their use in the workplace would emerge as a major issue by the 1980s. Estimates of employee drug use vary greatly, ranging from 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job. The safe performance of some occupations among them is done by airline pilots in air traffic.
5 From the 1920s until the 1960s, treatment of drug abuse in the United States was practically nonexistent. During this period many officials did not believe that treatment was effective or necessary. Drug abusers and sellers were simply arrested and imprisoned, thereby discouraging use. The dramatic explosion in the use and abuse of a wide range of different drugs during the 1960s demonstrated the weakness of this theory. As a result, two treatment programs were developed during the 1960s.
A. Patterns of drug abuse
B. Treatment
C. Drug testing in the workplace
D. Classification of psychoactive drugs
E. Definition of drug abuse
Paragraph 1 ______.
How will the present-day science develop in the near future, i.e. the next decade or so？
To【36】with, we can expect【37】science to produce a vast increase in entirely new products of all【38】.These will range from light-weight, high-strength materials for【39】in the many specialized branches of engineering,【40】drugs and chemicals with a greatly-increased selectivity 【41】can be used in medicine and agriculture. However, in this【42】case in particular, it may be predicted【43】the wide-spread application and combination of new and more complex products will give【44】to unexpected inter-reactions or side-effects. For this reason, greatly intensified programs of research will be required in【45】to discover and eliminate the harmful results of such combination.
(36)
A．talk
B．begin
C．introduce
D．research
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