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问题 单项选择题 A2型题

男性，20岁，右下肢局部皮肤红肿热痛，中央部缺血坏死流出脓液稀薄，粉红色，其致病菌是（）

A.金黄色葡萄球菌

B.β-溶血性链球菌

C.大肠杆菌

D.绿脓杆菌

E.变形杆菌

答案

参考答案：B

解析：特征性的要记住：金黄色葡萄球菌一脓液黄白色、有恶臭；大肠杆菌一脓液黏稠，有粪臭；绿脓杆菌-顾名思义，脓液绿色；β-溶血性链球菌一稀薄脓液，可有粉红色。故选B。考点：浅表软组织急性感染

选择题

有东方“十字路口”之称的是[ ]

A、东南亚

B、南亚

C、东亚

D、中亚
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单项选择题 案例分析题

Shopping habits in the United States have changed greatly in the last quarter of the 20th century. （1） in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was （2） on both sides with many （3） businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. （4）,some shops offered （5） .These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. （6） in the 1950s, a change began to （7） .Too many automobiles had crowded into Main Street （8） too few parking places were （9） shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces （10） the city limits. Open space is what their car-driving customers needed. And open space is what they got （11） the first shopping centre was built. Shopping centres, or rather malls, （12） as a collection of small new stores （13） crowded city centres. 14 by hundreds of free parking space, customers were drawn away from （14） areas to outlying malls. And the growing （16） of shopping centres led （17） to the building of bigger and betterstocked stores. （18） the late 1970s,many shopping malls had almost developed into small cities themselves. In addition to providing the （19） of one stop shopping, malls were transformed into landscaped parks, （20）benches, fountains, and outdoor entertainment.

请在3处填上正确答案（）

A.varied

B.various

C.sorted

D.mixed up
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