问题 问答题 简答题

禽流感、鸡新城疫、鸡传染性喉气管炎和传染性支气管炎都有呼吸道症状,临床上如何对它们进行区别诊断?要从易感动物,发病日龄,临床症状和病理变化几个方面进行区别。

答案

参考答案:

禽流感:临床症状:头颈肿胀,鸡冠肉髯肿胀,出血,坏死,眼睑周围肿胀,呼吸困难,咳嗽,张口呼吸,板有神经症状,病鸡痉挛,头颈后折,运动失调;病理变化:头部面部水肿,肌胃腺胃出血,胰腺出血充血坏死,腿部鳞片出血。

鸡新城疫:经常张口呼吸,呼吸时候发出“咕噜”声,有甩头和吞咽动作,嗉囊积水,倒提时粘液或饲料从口中大量流出,拉绿色稀粪,剖检可见,喉头充血,气管粘液增多,粘膜增厚,全身出血性病变明显,腺胃 * * 出血。传染性喉气管炎:临床症状:呼吸困难,气喘,咳嗽及咳出带血的渗出物,气管干罗音;病理变化:喉头及气管上部充血出血,内有血性渗出物。。

传染性支气管炎:临床症状:咳嗽,喷嚏,流黏性浆液性鼻液;病理变化:喉头及气管下部充血出血,呼吸道黏膜形成假膜,有出血,溃疡。

阅读理解

阅读理解。

     Good health is the most valuable thing a person can have, but one cannot take good health for

granted. It is important to remember that the body needs proper care in order to be healthy. There

are three things that a person can do to help stay in good shape: eat right food ,get enough sleep,

and exercise regularly.

     Proper nutrition (营养) is important for good health. Your body cannot work well unless it

receives the proper kind of “fuel”(燃料).Don't eat too much food with lots of sugar and fat. Eat

plenty of foods high in protein (蛋白质) ,like meat, fish, eggs and nuts. Vegetables and fruits are

very important because they provide necessary vitamins (维他命) and minerals. However, don't

over eat. It is not helpful to be overweight.

     Getting the proper amount of sleep is also important. If you don't get enough sleep, you feel

tired and easily get angry. You have no energy. Over a long period of time a little a amount of

sleep may even result in a change of personality (人的个性).Be sure to allow yourself from seven

to nine hours of sleep each night. If you do, your body will feel strong and refreshed, and your

mind will be sharp.

     Finally, get plenty of exercise. Exercise firms the body, strengthens the muscles,and prevents

you from gaining weight. It also improves your heart and lungs. If you follow a regular exercise

program, you will probably increase your life-span (寿命).Any kind of exercise is good. Most s

ports are excellent for keeping the body in good shapes: basketball, swimming, bicycling, running

and so on are good examples. Sports are not only good for your body, but they are enjoyable and

interesting, too.

     If everybody, were to eat the right foods, get plenty of sleep and exercise regularly, the world

would be a happier and healthier place. We would all live to be much older and wiser.

1. According to the passage,_________.

A .we should eat right food, get enough sleep, and exercise regularly.

B. if we were healthy, we could spend our days in doing things with less sleep

C. one can eat a lot to stay in good shape

D. one needn't take any exercise if he is healthy

2.In order to keep good health, ___________ .

A.we should eat a lot of sweets              

B.one needs a large amount of fat

C.people should eat according to the foods nutrition    

D. we must try to sleep now and then

3. Eating more and sleeping less________.

A. can keep healthy                

B. is no good for you

C. gets you more energy          

D. will keep your personality

4.The writer explains ________in this passage.

A. how to eat                         B. the importance of doing exercise

C. how to keep healthy             D. what to eat

5.The title of the article should be___________ .

A. Eating and Exercising          

B. How Vitamins Work in Man's Body

C. Staying Healthy                  

D. Sleeping Well

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