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问题 单项选择题

患者女，57岁，三个有前发烧。CT扫描示右上肺胸膜下多房性空洞。部分空洞内可见小气液平面，病变周围散在小斑片状病灶，相邻胸膜增厚，最可能的诊断为：

A．结核性空洞

B．慢性肺脓疡

C．空洞型肺癌

D．肺大泡合并感染

E． 支气管扩张并感染

答案

参考答案：B

单项选择题

鉴别急性水肿性胰腺炎与坏死性胰腺炎有价值的实验室检查是（）.

A.血清淀粉酶

B.血清脂肪酶

C.尿淀粉酶

D.血清胆红素

E.血清正铁白蛋白
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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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