用动词的适当开工填空。
1. He usually has rice for lunch. (就斜体部分提问)
_____ _____ he usually _____ for lunch?
2. They did exercises yesterday morning. (改为一般疑问句)
_____ they _____ eye exercises yesterday morning?
3. These stone weigh two tons. (就斜体部分提问)
_____ _____ _____ these stones weigh?
4. They didn't buy any computers last year. (改为肯定句)
They _____ _____ computers last year.
5. We will finish the work in two days . (就斜体部分提问)
_____ _____ _____ you will _____ _____
6. The temperature is too low to change liquids into gases. (改为同义句)
The temperature _____ _____ enough to turn liquids into gases．
7. Everybody knows that computer can store information. (改同义句)
It is _____ that information can _____ _____ in computers．
(2)创建带有SQL子查询的查询“查询1”，显示年龄大于平均年龄的学生信息，要求在子查询中实现查询平均年龄，结果显示学生表全部字段。查询结果如图所示。