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可转换公司债券是一种可以在特定时间、按特定条件转换为普通股股票的特殊企业债券。( )
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阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。 Plugging into Electronic Databases If you are looking (36) information, library shelves are a good place (37) . But if you need up-to-the-minute data or have specialized needs, you may (38) a computerized database more useful, (39) expensive, and less time consuming. A database, a file of (40) on one subject or family of subjects, can be (41) and maintained in a computer’s memory. The speed of the computer then enables you (42) any item in this file almost instantly. The three main types of databases are statistics, bibliographies, and full text. Statistical databases store vast (43) of numerical data, such as wage and price indexes, census information, foreign exchange rates, and bond prices, bibliographic databases store references and (44) of articles (45) periodicals and newspapers. Full-text databases offer the complete texts of such materials (46) newspaper, magazine and journal articles. (47) databases exist today, and their numbers are (48) . Many companies have their (49) database, (50) is accessible (51) employees through computer terminals or microcomputers.(52) addition, several hundred commercial data bases are now available (53) the public, (54) literally millions of information readily retrievable. These databases cover specific fields, such as law and financial (55) , or general information, such as sports and weather data.
男婴，6个月。于生后接种卡介苗后引起全身反应。近3～4个月来，感染绵延不断，常患鹅口疮、上呼吸道感染及腹泻肠炎。各项免疫球蛋白测定均低，OT试验多次阴性，E花环试验低于正常。X线胸片：胸腺影缺如。
下列程序中，给出两个整数2和3，分别求2除以3和2乘以3的结果，要求调用类ex1_1的方法method()来输出相应的结果，请将程序补充完整。程序运行结果如下： 0.6666666666666666 6 public class ex1_1{ public static void main(String[]args) { int n1=2，n2=3； ex1_1 obj1_1=new ex1_1()； obj1_1. ______； } public void method(int x，int y){ System.out.println(______)； System.out.println(______)； } }
C It doesn’t matter when or how long a person sleeps, but everyone needs some rest to stay alive. That’s what all doctors’ thought, until they heard about Jercy Page. Jercy Page, it was said, never slept. Could this be true The doctors decided to see this strange man by themselves. Jercy Page was ninety years old when the doctors came to his home in New Jersey. They thought for sure that he got some sleep of some kind. So they stayed with him and watched every movement he made. But they were surprised. Though they watched him hour after hour and day after day, they never saw Jercy Page sleeping. Actually, he did not even own a bed. He never needed one. The only rest that Jercy Page got was sitting in a comfortable chair and reading newspapers. The doctors were puzzled by this strange continuous sleeplessness. They asked him many questions, hoping to find an answer. They found only one answer that might explain his condition. Page remembered some talk about his mother having been injured several days before he was born. But that was all. Was this the real reason No one could be sure. After watching him closely, the doctors came to believe that Jercy Page ______.
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