标准差、方差和变异系数主要用来反映（）. A.计量资料的集中趋势 B.计数资料的集中

关于一个国家或地区的城市化水平与其社会经济发展水平关系的叙述，不正确的是（   ）

A．城市化水平体现其社会经济发展水平

B．社会经济发展水平体现其城市化水平

C．城市化带动区域经济发展

D．区域经济发展促进城市化进程

患者男，71岁，因“反复腹胀、纳差6个月，加重伴尿色加重1周余”入院。患者6月前开始肝中上腹胀，进食后加重伴纳差，就诊后予保护胃黏膜治疗症状无缓解。近一月来患者腹胀、纳差较前加重，门诊行胃镜及活检检查示慢性中度萎缩性胃炎伴肠化生，呼气试验示Hp（+），予三联方案（兰索拉唑、左氧氟沙星、克拉霉素）进行Hp根除治疗（该患者青霉素皮试+），停药4周后复查呼气试验示仍（+），调整抗生素后予四联疗法（奥美拉唑、左氧氟沙星、果胶铋、克拉霉素）继续根除治疗，但服药疗程未结束时患者腹胀、纳差加重，伴恶心、呕吐，尿色如浓茶样，伴皮肤黄染，于门诊查肝功能示总胆红素113.7μmol／L，结合胆红素64.5μmol/L，ALT110U/L，AST72U/L，尿常规：胆红素（++）。近2个月体重减轻7.5kg。患者既往于2年前有“肺大疱手术”史，有高血压史6月余，血压最高150/90mmHg，未规律服药。查体：神清，精神尚可，体型消瘦，皮肤巩膜明显黄染，未见肝掌、蜘蛛痣，腹软，无压痛，未及包块，双下肢无水肿。腹部B超未见异常。

根据目前的病史资料，患者黄疸的类型及其可能的初步病因为（）。

A.溶血性黄疸，血液系统疾病可能

B.肝细胞性黄疸，药物性肝炎可能

C.肝内胆汁淤积性黄疸，药物性肝炎可能

D.肝外梗阻性黄疸，胆系结石可能

E.肝内胆汁淤积性黄疸，自身免疫性肝病可能

F.肝外梗阻性黄疸，消化系统肿瘤可能

搞好自己的本职工作，不需要学习与自己生活工作有关的基本法律知识。

An ancient philosopher’s wisdom can be compared in value to gold. Now “The Art of War” by the great thinker Sun Tzu has actually been printed on pure gold. There are 5,000 of these bookstores across China, costing 19,600 yuan each.

Known as the world’s oldest book on military strategy(军事策略), it was originally written on bamboo strips(竹简). Sun Tzu lived in about 500 BC in the late Spring and Autumn Period. There is little information about Sun Tzu’s real life.

But according to one story, the king asked Sun Tzu to gibe a demonstration of his way of training the army. Two groups of the king’s concubines(妃子) played the soldiers and two of the king’s favourites acted as commanders. Sun Tzu gave them orders, but they thought it was just a game and couldn’t stop laughing. Sun Tzu said, “if the order is not clear it’s my fault, but if the order is and soldiers don’t obey, it’s the commanders’ fault.” He then killed the two commanders, despite the king’s protest. When Sun Tzu gave new orders, the concubines performed perfectly.

Sun Tzu’s book became popular with leaders in Asia and later in the West. In 1782 a Frenchman named Amiot took the book to Europe. It is said that Napoleon used its principles while conquering Europe.

“The Art of War” is today used in business, sport, diplomacy(外交) and even relationships. Sun Tzu is possibly the most quoted(引用) Chinese in the world. One saying is, “If you know the enemy and know yourself, you need not fear the result of a hundred battles.”

46. From this passage we know the book “The Art of War” by the great thinker Sun Tzu _________.

A. has been compared to gold             B. has been written on bamboo strips again

C. cost 19,000 yuan                     D. has been printed on pure gold

47. Sun Tzu is _____________.

A. known all over the world                       B. a person living in 1000 BC

C. a great thinker but we knew little about his life      D. a good writer

48. In the story of Sun Tzu’s way of training the army, Sun Tzu killed ___________.

A. two of the king’s favorite concubines      B. two of the king’s favorite soldiers

C. two groups of the king’s concubines       D. two famous commanders

49. Sun Tzu’s book became popular ____________.

A. in Asia    B. in the west   C. in Europe    D. both A and B

50. The best title of this article is _____________.

A. Sun Tzu’s wisdom can be compared in value to gold

B. The book “The Art of War” has been printed on pure gold

C. Sun Tzu’s wise words turn to gold

D. The great ancient philosopher—Sun Tzu

在某工程单代号搭接网络计划中，关键线路是指（）的线路。

A．相邻两项工作之间的时距之和最大

B．相邻两项工作之间的时间间隔全部为零

C．工作的持续时间总和最大

D．相邻两项工作之间的时距全部为零