问题 单项选择题

38岁男性患者,因进行性消瘦伴体位性头晕,饭前经常心悸,手抖就诊,既往结核病史(-)。查体消瘦,皮肤色素沉着,BP78/50mmHg,血糖3.0mmol/L,抗。肾上腺抗体(-),皮质醇72mmol/L(正常165~441mmol/L)。为进一步鉴别原发性或继发性肾上腺皮质功能减退,下述检查最有意义的是()。

A.测血浆肾素、醛固酮

B.测24小时尿17-羟类固醇

C.测24小时尿游离皮质醇

D.测24小时尿17-酮类固醇

E.ACTH刺激试验

答案

参考答案:E

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.