Java中用于提供Java语言、Java虚拟机的核心类和接口的包的是______。
A．javio包
B．javapplet包
C．javlang包
D．javnet包
参考答案：C
解析：[分析] java.lang包：封装编程要用的所有基本类，如Object、Class、System、Integer、 Thread等。对于任何一个Java程序来说，这些类几乎是必不可少的。java.1ang还包含了许多由Java虚拟机发出的异常和一些用于访问系统资源的类，如ClassLoader等。
| 阅读理解。 | ||||
| Birthdays are celebrated all over the world. Some ways to celebrate birthdays are rather similar from country to country: candles, cakes and birthday wishes. But there also different ways to celebrate birthdays. Here are a few:
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| 1. When someone is having a birthday in Denmark, you can see _____ outside the window. | ||||
| A. flowers B. presents C. a flag D. a chair | ||||
| 2. In _____ flowers are put on the chair of the birthday child. | ||||
| A. Japan B. Denmark C. India D. Holland | ||||
| 3. In _____, only birthday children wear colored clothes to school. | ||||
| A. India B. Holland C. Denmark D. Japan | ||||
| 4. In Japan, the birthday is more important for boys when they are _____. | ||||
| A. 15 B. 7 C. 5 D. 3 | ||||
| 5. The passage is mainly about _____. | ||||
| A. similar ways of celebrating birthdays in some countries B. different ways of celebrating birthdays in some countries C. children's birthdays in western countries D. the importance of children's birthdays |