轨道由哪几部分组成？

某猪场育肥猪发病，体温达40℃以上，皮肤发黄，生长缓慢，出栏延迟。剖检病变有贫血；全身皮肤、黏膜、脂肪和脏器显著黄染；肝脏肿大、质脆，呈土黄色；胆囊肿大，含有浓稠的胶冻样胆汁。从病猪耳静脉采血后进行鲜血压片镜检，显微镜下可见红细胞的形态发生了变化，呈菠萝状、锯齿状、星状等不规则形态。该病例诱因是（）

A.痛风

B.维生素A缺乏

C.附红细胞体感染

D.病毒感染

E.大肠杆菌感染

下列哪一种激素是升高血糖浓度最重要的激素（）.

A.胰高血糖素

B.胰岛素

C.肾上腺素

D.肾上腺皮质激素

E.生长激素

第二节（共5小题，每小题2分，共1 0分）

根据短文内容，从下框的A～F选项中选出能概括每一段主题的最佳选项，并在答题卡上将该项涂黑。选项中有一项为多余选项。

A．The introduction of Paris

B．The culture of Paris

C．The population growth in Paris

D．The production of ParisE．The education in Paris

F．The industries in Paris

51．____________

Paris, the capital and the largest city of the country, is in north central France．The Paris metropolitan  area contains nearly 20% of the nation’s population and is the economic, cultural, and political center of France．The French government have historically favored the city as the site for all decision making, thus powerfully attracting nearly all of the nation’s activities．

52．___________

Paris has grown steadily since it was chosen as the national capital in the late 10^th century．With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19^th century．The migration was especially stimulated by the construction of railroads, which provided easy access to the capital．After World War II, more and more immigrants arrived．

53．____________

The city is the centralized control point of most national radio and television broadcasting．It is a place of publication of the most important newspapers and magazines and an international book publishing center．With more than 100 museums, Paris has truly one of the greatest concentrations of art treasures in the world．The Louvre, opened as a museum in 1793, is one of the largest museums in the world．

54．___________

In the late 1980s about 4.1 million pupils annually attended about 47,000 elementary schools．In addition, about 5.4 million students attended some 11,200 secondary schools．Approximately 1.2 million students were enrolled annually at universities and colleges in France in the late 1980s．French centers of learning have served as academic models throughout the world．

55．___________

Paris is the leading industrial center of France, with about one quarter of the nation’s manufacturing  concentrated in the metropolitan area．Industries of consumers goods have always been drawn to Paris by the enormous market of the big population; and modern, high-technology industries also have become numerous since World War II．Chief manufactures are machinery, automobiles, chemicals and electrical equipment．

麦格雷戈在《企业的人性方面》中把Y理论叫做（）.

歼-15飞机研制现场总指挥罗阳，因突发急性心梗殉职。他将自己的全部精力和智慧都奉献给祖国的航空事业，用行动践行了航空报国的伟大宗旨。为此，中航工业集团授予罗阳“航空报国英模”称号。这告诉我们（）

①人生的价值在于得到社会的承认

②投身实践是实现人生价值的根本途径

③正确的社会意识促进社会的发展

④在个人与社会的统一中实现人生价值

A.①②

B.①③

C.②④

D.③④