男孩，8岁，12月份发病，因发热2天、伴头痛及呕吐1天、抽搐1次入院。查体：昏睡状态，面色苍白，躯干皮肤见散在瘀点及瘀斑，颈强直（+），克氏征及布氏征（+）。血象：WBC20×10／L，中性粒细胞0．95，脑脊液化验：外观混浊，WBC1200×10／L，多核0．90，糖1．96mmol／L，蛋白（+），氯化物115mmol／L。

首选抗生素是（）

A.氯霉素

B.青霉素

C.磺胺甲噁唑

D.头孢曲松

E.氨苄西林

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 the 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 Knickerbocker 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 modern 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.

Which of the following was NOT a predecessor of baseball

A．Rounders.

B．Town ball.

C．Cricket.

D．One old cat.