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问题 填空题

金属在生产和生活中有广泛的应用。  

（1）下列金属制品中，利用金属导电性的是_________（填字母序号）。

                                    

 A．黄金饰品            B．铝蒸锅          C．钢导线  

（2）铁制品在沙漠地区不易锈蚀的原因是___________。  

（3）工业上用一氧化碳和赤铁矿炼铁反应的化学方程式为________________。  

（4）某厂排放的废水中含有硫酸铜，将废水处理可得到铜和铁红（氧化铁）两种产品。过程如下图所示（废水中的其他物质不参与反应）

过程①中发生反应的化学方程式为______________。        A-G七种物质中含铁元素的有________。（填字母代号）。

答案

(1)C;

(2)没有水分;  

(3);

(4);A、B、C、E、G

单项选择题

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.
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单项选择题

刘女士小孩感冒咳嗽不止，为了不影响上学，打开家中"自备药"的抽屉，翻找出以前小孩曾服用过的中成药，有大丸的、小粒的，还有咳嗽糖浆，却发现很多都已经发霉。 常见中成药中必须阴凉密封保存的药物剂型是（）

A.片剂

B.颗粒剂

C.胶囊剂

D.水丸剂

E.栓剂
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