问题 问答题 简答题

简述胸腔积液

答案

参考答案:

多种疾病可累及胸膜产生胸腔积液,病因不同,液体的性质也可不同,可以是炎性渗出液,化脓性炎症则为脓液;肾脏疾病、心脏疾病导致充血性心衰或血浆蛋白过低,可发生漏出液;胸部外伤、肺或胸膜的恶性肿瘤可以发生血性积液;恶性肿瘤侵及胸导管及左锁骨下静脉,可产生乳糜性积液。X线检查能明确积液的存在,但难以区别液体的性质。胸腔积液因胸膜粘连而局限在胸腔某一处时,称为包裹性积液,多发生在侧胸壁或后胸壁。包裹性积液局限在叶间裂时,称为叶间积液。

阅读理解

The Healthy Habits Survey(调查)shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.

1.How many times did you brush your teeth yesterday?

·Finding:A full 33% of seniors brush their teeth only once a day.

·Step:Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.

2.How many times did you wash your hands or bathe yesterday?

·Finding:Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day—half of the number doctors recommend.

·Step:We touch our faces around 3,000 times a day-often inviting germs(病菌)to enter our mouth, nose, and eyes.Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.

3.How often do you think about fighting germs?

·Finding:Seniors are not fighting germs as well as they should.

·Step:Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海绵)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

小题1:What is found out about American seniors?

A.Most of them have good habits.

B.Nearly 30%of them bathe three days a week.

C.All of them are fighting germs better than expected.

D.About one third of them brush their teeth only once a day.小题2:Doctors suggest that people should wash their hands ________.

A.twice a day

B.three times a day

C.four times a day

D.eight times a day小题3:Which of the following is true according to the text?

A.We should keep from touching our faces.

B.There are less than 300 types of bacteria in the mouth.

C.A kitchen sponge can carry more germs than a toilet.

D.We should wash our hands before touching a door handle.小题4:The text probably comes from________.

A.a guide book

B.a popular magazine

C.a book review

D.an official document

单项选择题