问题 单项选择题 B型题

经体内代谢才有活性的糖皮质激素是()

A.呋塞米

B.氟氢可的松

C.氢化可的松

D.地塞米松

E.泼尼松

答案

参考答案:E

解析:地塞米松为长效类药,抗炎及其他GC作用很强,适用于降低颅内压,缓解肿瘤等所致脑水肿,几无钠潴留作用;氟氢可的松为盐皮质激素,用于抗过敏性皮炎、接触性皮炎、湿疹等症,抗炎作用强,水钠潴留作用也强,主要用于皮肤;呋塞米为强效利尿药,主要用于水肿等;氟氢可的松为盐皮质激素,用于抗过敏性皮炎、接触性皮炎、湿疹等症,抗炎作用强,水钠潴留作用也强,可引起低血钾;泼尼松是一种需经体内代谢后才有活性的糖皮质激素。

阅读理解

阅读理解

    Coffee experts are willing to pay large sums of money for high-quality coffee beans. The high-end

beans, such as Kona or Blue Mountain, are known to cost extraordinary sums of money. Then there

is Kopi Lowak (translated as "Civet Coffee"), the world's most expensive coffee, which sells for as

much as US $50 per quarter-pound.

     This isn't particularly surprising, because approximately 500 pounds a year of Kopi Lowak make

up the entire world supply. What is surprising is why this particular coffee is so rare. In fact, it's not the

plants that are rare. It's the civet droppings. That's right, the civet droppings-the body waste of the palm

civet. Coffee beans aren't Kopi Lowak until they've been digested(消化) and come out in the body

waste of the palm civet.

      Palm civets are tree-dwelling, raccoon-like little animals, native to Southeast Asia and the Indonesian

islands. They also have a love for coffee cherries. According to Kopi Lowak suppliers, palm civets eat

the fruit whole, but only digest the outer fruit, leaving the beans intact(完好无损). While the beans are

not destroyed, they undergo a transformation in the animal's body. A chemical substance in the digestive

system of the palm civet causes some changes to the beans to give them a unique flavor(味道). However,

this is not the only explanation why coffee beans retrieved from civet droppings have a special flavor all

their own. Another possible reason is that palm civets have an unfailing instinct for picking the coffee

cherries at the peak of their ripeness.

      Kopi Lowak is reported to have a character in taste unlike any other coffee, complex with caramel

undertones and an earthy flavor. Currently, most of the world's supply of Kopi Lowak is sold in Japan,

though a few US markets are also starting to stock up on Kopi Lowak.

1.What does "This" in the second paragraph refer to?

A. Civet Coffee.

B. Blue Mountain coffee.

C. The high price of Kopi Lowak.

D. The unique taste of Kona.

2.Why is Kopi Lowak expensive?

A. There is a very limited supply of the beans.

B. The coffee trees that grow the beans are scarce.

C. It takes a long time for the coffee beans to ripen.

D. Only a few experts know how to produce the beans.

3.What is the main point discussed in the third paragraph?

A. Why palm civets like the coffee beans.

B. Where Kopi Lowak is mainly harvested.

C. What chemicals are found in the civet's digestive system.

D. How palm civets change coffee fruit to Kopi Lowak beans.

4.Which of the following statements is true, according to the passage?

A. Little palm civets eat only the outer layer of the coffee cherries.

B. Palm civets somehow know the right time when the coffee fruit ripens.

C. Kopi Lowak is most popular in Southeast Asia and the Indonesian islands.

D. Kona and Blue Mountain are the most expensive coffees but only of average quality.

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