在Java语言中提供了标准类库，为编程所需的低层模块提供了常用的_爱下问搜题

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问题填空题

在Java语言中提供了标准类库，为编程所需的低层模块提供了常用的方法和接口，并将它们分装成包，每个包又包括子包，形成【6】结构的类层次。

答案

参考答案：【6】树

解析：【命题目的】考查Java语言中提供的标准类库的层次结构。
【解题要点】知道Java语言中的类和继承的概念，树结构也就不难理解。
【考点链接】树结构中根结点是Object。

完形填空

Once, there was a beautiful girl who didn’t like herself, because she was blind, she couldn’t see anything.
In fact, the girl 1  nobody except her boyfriend, for he was always 4  to help her. She used to tell her boyfriend, “ 3  I could see the world, I would marry you.”
One day, someone donated a pair of 4  to the girl. When the bandages came off，she was able to see 5 ,including her boyfriend for the 6   time. He asked her, “Now that you can see the world, will you 7  me?” The girl looked at her boyfriend and was greatly surprised to see that he was blind, 8  . She had never expected that, and she would not like to be with a blind husband for the rest of her life, so she 9  to marry him.
Her boyfriend left in tears and a few days later wrote a 10  to her, saying, “My dear, take good care of your eyes. Before they are yours, they were 11 .”
So, this is how the human brain often works when our status changes. Only a very few remember 12  life was like before. And we often ask for more than we need. Life is a gift. Today, before you complain about the 13  of your food，think of those who have nothing to 14 . Before you complain about life，think of some ones who went to heaven too early. Before you complain about your old 15 , think of the people who are living in the streets. And when you are tired and complain about your job, think of those who have no jobs.
In a word, enjoy the things you have and don’t forget your past.

单项选择题

数据库表中有一长字段名“期末考试分数”，当该数据库表转为自由表之后，长字段名显示为( )。

A．期末考试分数

B．期末考试分

C．期末考试分**

D．系统出错