问题 单项选择题

突发呼吸困难伴窒息感且一侧呼吸音消失最常见于()

A.大量胸腔积液

B.肺水肿

C.大叶性肺炎

D.支气管哮喘

E.自发性气胸

答案

参考答案:E

解析:本题属理解题。考核知识点为临床表现。错误率较高。常见错误:①错选"A",是最常见的错误,大量胸腔积液较少突发呼吸困难,多为渐进性;②题目注明为"最常见于",故在A和E之间选择E更准确;③错选"B"、"C"、"D",3种疾病较少出现突发的窒息感且多为呼吸音减弱。

单项选择题
阅读理解

阅读理解。

     For all the dinner table, a glass of milk seems to be a constant, at least it was when I was growing up.

It was widely believed that milk was integral in building strong bones and teeth. There's no doubt that

dairy products (乳制品), and milk in particular, are high in protein and calcium, and most milk products

are supplemented with Vitamin D and A.

     While it's well known that our bones need calcium, some studies suggest that high calcium intake

doesn't necessarily lower a person's risk for fractures (骨折). A Harvard study found that people who

drank two or more glasses of milk had no greater protection from breaking a bone than those who drank

a glass or less a week.

     There's no doubt that we need calcium. Some anti-dairy supporters claim that dairy can lead to heart

disease. Much of this claim is based on high fat and high dairy products, like cheeses and creams, which

may indeed contribute to cardiovascular problems. Some studies have linked high milk intakes with a risk

of prostate cancer; this seems to be caused by high-fat dairy products, not dairy in general.

     Although milk was always regarded as one of the most important thing we need for our bones, yet

least promoted, factors involved in strengthening bones. Perhaps we should think of dairy as less like a

nutrient and more like a food. If you like it, eat it. If not, find some others. Because some claims may not

be completely true, when I eat a cream, I'm not thinking about calcium, protein, or any such thing I'm

thinking delicious.

1. Which of the following is TRUE on the milk?

A. The more milk you drink, the more risk for fractures you might be.

B. The more milk you drink, the less risk for fractures you might be.

C. The less milk you drink, the less risk for fractures you might be.

D. There is no link between them.

2. Some anti-dairy supporters claim that dairy can lead to except _________.

A. cardiovascular problems

B. heart disease

C. prostate cancer

D. stomach cancer

3. The underlined words "some others" in the last paragraph refer to _________.

A. dairy products      

B. milk

C. food

D. cream

4. What's the author's attitude towards milk?

A. He doesn't like milk any more.  

B. He used to drink milk as a child.

C. He regards milk as a nutrient.      

D. He always cares about calcium, protein when he eats something.

5. We can learn from the text that _________.

A. All the claims are not completely true.      

B. High milk intakes can lead to cancer.

C. It's necessary for you to reduce milk intakes.    

D. Give up milk for your health.