上颌磨牙桩冠修复时最常利用的根管是（）。 A.近中舌根管 B.以上都是 C.腭根管

阅读理解。

     At midnight at New Year's Eve. people in Rome (罗马) and Italy (意大利) throw (扔) all the things

they no longer want. The streets are filled with old chairs, beds, clothes and dishes .... In Madrid

(马德里), Spain (西班牙), new year comes in more quietly (安静地). People go to the main square

(广场), each holding a bag of grapes. As the clock strikes (敲) twelve, the people eat grapes.

     In Tokyo people eat noodles at New Year's Eve. This food is said to bring long life. Early the next

morning, some Japanese families climb Mount Fuji (富士山). There they watch the first sunrise (日出)

of the new year.

     In China , New Year's food include (包括) a whole fish and a chicken . The chicken must be

presented (呈现) with a head, a tail and two feet to symbolize (象征) completeness (完美).

1. This story is about New Year's Eve in _____.

A. Italy and Spain              

B. England

C. Japan and China              

D. Both A and C

2. From the story we know that people in some countries bring in New Year By _____.

A. throwing everything            

B. playing games

C. eating some special food        

D. drinking coke

3. People climb Mount Fuji to _____.

A. ee the sun come up          

B. look at the stars

C. search for New Year's flowers  

D. watch the sun go down

4. The people who hope to have long life from their New Year's food _____.

A. are Spanish    

B. are Japanese    

C. are Chinese  

D. are Italians

5. People in China eat _____ at New Year's Eve because they symbolize completeness.

A. grapes      

B. noodles      

C. fish and chicken    

D. whole fish and chicken

患者，女，25岁。支气管哮喘发作3天，现大汗，紫绀，端坐呼吸，有奇脉。下列皮质激素的使用，哪一项是正确的（）

A.小剂量逐渐递增

B.小剂量长疗程

C.大剂量静脉用

D.大剂量吸入

E.大剂量口服

利用计算机帮助学员进行学习，将教学内容加以组织使学生通过人机交互自如地学习，这属于计算机应用的哪一个领域

A．CAD

B．CAI

C．CAM

D．CAT

简述利润最大化原则。

城市生活垃圾随意堆放产生的（）对土壤环境的危害很大。

A.煤烟

B.噪音

C.渗出液

D.霉臭味