山莨菪碱 A．M受体激动药 B．α、β受体激动药 C．N2受体激动药 D．M受体阻断

Placing a human being behind the wheel of an automobile often has the same curious effect as cutting certain fibres in the brain.

The result in either case is more primitive behaviour. Hostile feelings are apt to be expressed in an aggressive way.

The same man who will step aside for a stranger at a doorway will, when behind the wheel, risk an accident trying to beat another motorist through an intersection. The importance of emotional factors in automobile accidents is gaining recognition. Doctors and other scientists have concluded that the highway death toll resembles an epidemic and should be investigated as such.

Dr. Ross A. McFarland, Associate Professor of Industrial Hygiene at the Harvard University School of Public Health, said that accidents “now constitute a greater threat to the safety of large segments of the population than diseases do. ”Accidents are the leading cause of death between the ages of 1 and 35. About one third of all accidental deaths and one seventh of all accidental injuries are caused by motor vehicles.

Based on the present rate of vehicle registration, unless the accident rate is cut in half, one of every 10 persons in the country will be killed or injured in a traffic accident in the next 15 years.

Research to find the underlying causes of accidents and to develop ways to detect drivers who are apt to cause them is being conducted at universities and medical centres. Here are some of their findings so far:A man drives as he lives. If he is often in trouble with collection agencies, the courts, and police, chances are he will have repeated automobile accidents. Accident repeaters usually are egocentric, exhibitionistic, resentful of authority, impulsive, and lacking in social responsibility. As group, they can be classified as borderline psychopathic personalities, according to Dr. McFarland.

The suspicion, however, that accident repeaters could be detected in advance by screening out persons with more hostile impulses is false. A study at the University of Colorado showed that there were just as many overly hostile persons among those who had no accidents as among those with repeated accidents.

Psychologists currently are studying Denver high school pupils to test the validity of this concept. They are making psychological evaluations of the pupils to see whether subsequent driving records will bear out their thesis.

Which of the following is true about the traffic accidents（）

A. They have threatened the safety of the population as diseases do

B. They will claim 10 percent lives in the next 15 years

C.One third of victims in them are dead in the end

D. The underlying causes of them are still being detected

下列各项中，属于会计行政法规的有（）。

A.《总会计师条例》

B.《会计从业资格管理办法》

C.《企业财务会计报告条例》

D.《企业会计准则——基本准则》

近年来，我国修改、废止了大量限制非公有制经济发展的政策，制定了一大批鼓励非公有制经济发展的法规。这有利于

①形成各种所有制经济平等竞争、相互促进的新格局 

②加强国家对非公有制经济的直接经营管理，促进生产力发展

③调动人们的创业积极性;增加就业 

④坚持和完善社会主义初级阶段的基本经济制度 

A．①②③

B．②③④

C．①③④

D．①②④

李某，男，15岁，数年来多处骨折伴有关节疼痛，肝肾功能正常，超声显示甲状腺下极背侧1.0cm×1.5cm，低回声结节，包膜完整，血流丰富，它最可能的诊断是（）。

A.甲状旁腺增生

B.甲状旁腺癌

C.低血钙症

D.肾结石

E.甲状旁腺腺瘤

波尔多液属于（）。

A、保护剂

B、有机杀菌剂

C、治疗剂

D、植物杀菌剂