下列关于小剂量糖皮质激素替代疗法的临床应用，正确的是（）。

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问题单项选择题 A1型题

A.垂体肿瘤

B.垂体前叶功能减退

C.肾上腺皮质癌

D.肾病综合征

E.肾上腺嗜铬细胞瘤

答案

参考答案：B

单项选择题

乙酰半胱氨酸祛痰的机制是

A．刺激胃粘膜，反射性增加呼吸道分泌

B．裂解粘蛋白，降低痰液粘度

C．裂解粘多糖纤维，降低痰液粘度

D．在支气管形成高渗，使痰液变稀

E．增加呼吸道粘膜上皮纤毛运动

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填空题

The United States counts its population every ten years, and each census reveals that the racial and ethnic mix is changing dramatically, so by the year 2050, the "average" American will not be descended from (1) , but the majority of U. S. residents will trace (2) ancestry to Africa, Asia, the Hispanic world, the Pacific Islands, or the Middle East. Once the United States was a microcosm of European nationalities, (3) the United States is a microcosm of the world. The United States is (4) considered a "melting pot" society by many of its residents. (5) , many people prefer the term "salad bowl." They use this (6) to describe American society. American society will soon be (7) nonwhite. "Melting pot" implies that the different ethnic groups blend together (8) one homogeneous (9) , "salad bowl" (10) that nationalities, like the ingredients in a mixed green salad, retain their cultural (11) . Earlier generations of (12) believed they had to learn English quickly not only to survive but also for (13) .
Now, many immigrant groups do not (14) the same need. Because there are many places in America (15) you can work, shop, get medical care, marry, divorce and die without knowing English. (16) , Chinatown in San Francisco and New York. Also, Los Angeles has many Vietnamese immigrants and immigrants from Mexico. (17) , many immigrant groups want their children to know their (18) culture. Many Hispanics, for instance, want their children to learn (19) English and Spanish and study the Spanish language in school. They are fighting for the (20) to bilingual education in many communities. In many communities they are in the majority.

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