问题 单项选择题

患者,22岁。自幼因麻疹后咳喘迁延不愈。近年来发作趋于频繁,程度亦趋严重。1周前感冒后哮喘发作一直未能缓解而住院。体检:患者神志淡漠,呼吸困难,呈端坐位,吸氧下发绀不明显。两肺满布哮鸣音,心率126/min,律齐,有奇脉。该患者是否应用和如何应用抗生素,下列哪种意见比较合理

A.积极控制感染,应用第三代头孢菌素联合氨基糖苷类抗生素

B.不必应用抗生素,因为缺少细菌性感染的确切证据

C.选用新一代大环内酯类或第一、第二代头孢菌素

D.等待痰培养结果再作决策

E.作为应用激素的必要配合治疗,应当使用抗生素以预防感染

答案

参考答案:A

单项选择题 案例分析题
阅读理解

阅读理解。

     Science can't explain the power of pets, but many studies have shown that the company of pets can help

lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread

all-round good cheer.

     Any owner will tall you how much joy a pet brings. For some, an animal provides more comfort than a

husband/wife. A 2002 study by Karen Allen of the State University of New York measured stress (紧张) levels

and blood pressure in people-half of them pet owners -while they performed 5 minutes of mental arithmetic (算

术) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with

a pet. People with pets did it best. Those tested with their animal friends had smaller change in blood pressure

and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes

than when doing in front of other companions. It seems people feel more relaxed (放松) around pets, says Allen, who thinks it may be because pets don't judge.

     A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an

effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people

and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put

on a diet program. On average, people lost about I1 pounds, or 5% of their body weight. Their dogs did even

better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn't lose any more

weight than those without dogs but, say researchers, got more exercise overall-mostly with their dogs-and

found it worth doing.

1. What does the text mainly discuss? [ ]

A. What pets bring to their owners.

B. How pets help people calm down.

C. People's opinions of keeping pets.

D. Pet's value in medical research.

2. We learn from the text that a person with heart disease has a better chance of getting well if _____. [ ]

A. he has a pet companion

B. he has less stress of work

C. he often does mental arithmetic

D. he is taken care of by his family

3. According to Allen, why did the people do better with pets around when facing stressful tasks?[ ]

A. They have lower blood pressure.

B. They become more patient.

C. They are less nervous.

D. They are in higher spirits.

4. The research mentioned in the last paragraph reports that _____.[ ]

A. people with dogs did more exercise

B. dogs lost the same weight as people did

C. dogs liked exercise much more than people did

D. people without dogs found the program unhelpful