地球的形状是一个稍扁，略鼓的不规则球体。

下列因素中，对骨折愈合影响最大的是（）

A.骨折的类型

B.骨折部位的血液供应情况

C.年龄

D.骨折移位情况

E.营养状况

下列各句中，加粗的成语使用恰当的一项是 [ ]

A．尽管在演艺界“上阵父子兵”早已不是新闻，但从早前谢霆锋、房祖名、曾宝仪等成名，到近期多位明星子女扎堆儿出击，肥水不留外人田的势头真让人另眼相看。

B．面对即将到来的春运客流高峰，山东滨州交通局在出现问题之前就未雨绸缪，针对春运安全工作进行了全面部署，采取多项措施确保道路运输安全畅通。

C．2011年1月12日晚，在印巴边境，巴基斯坦军队使用重炮和榴弹向印军前方阵地发动袭击，印度军队马上反戈一击，交火一直持续到次日凌晨。

D．抗战期间，国民党统治区的知识分子受尽了折磨和迫害，贫病交加者比比皆是；叶圣陶对于正直的爱国知识分子的不幸遭遇，寄予了深切的同情。

根据《中华人民共和国招标投标法》要求，属于必须以招标方式进行工程项目建设及与建设有关的设备、材料等采购总体范畴的是( )。

A．国家融资项目

B．省级重点项目

C．大型基础设施项目

D．公众安全项目

E．公用事业项目

不会游泳者落水后往下沉时，应拼命挣扎着往水面上划。

There has been much speculation about the origin of baseball. In 1907 a special commission decided that the modern game was invented by Abner Doubleday in 1839. One hundred years later the National Baseball Museum was opened to honor Doubleday. Historians, however, disagree about the origin of baseball. Some say that baseball comes from bat-and-ball games of ancient times. It is a matter of record that in the 1700s English boys played a game they called "baseball". Americans have played a kind of baseball since about 1800. At first tile American game had different rules and different names in various parts of the country — "town ball". "rounders", or "one old cat". Youngsters today still play some of these simplified forms of the game.
Baseball did not receive a standard set of rules until 1845, when Alexander Cartwright organized the Knicker-bocker Baseball Club of New York City. The rules Cartwright set up for his nine-player team were widely adopted by other clubs and formed the basis of modem baseball. The game was played on a "diamond" infield with the bases 90 feet apart. The first team to score 21 runs was declared the winner. By 1858 the National Association of Baseball Players was formed with 25 amateur teams. The Cincinnati Red Stockings began to pay players in 1869.

Who first gave baseball a standard set of rules’

A. Abner Doubleday.


B. Alexander Cartwfight.
C. Albert Spalding.


D. Babe Ruth.