问题
填空题
文件的记录均存放在数据集中，数据集中的一个结点称为______，它是一个______操作的基本单位。
答案
参考答案：控制区间 I/0
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文件的记录均存放在数据集中，数据集中的一个结点称为______，它是一个______操作的基本单位。
参考答案：控制区间 I/0
| 阅读理解。 | ||
Here's a shopping receipt (收据) of Linda.
| ||
| 1. When did Linda go shopping? | ||
[ ] | ||
| A. In the afternoon. B. In the evening. C. In the morning. D. I don't know. | ||
| 2. How many kinds of things did Linda buy? | ||
[ ] | ||
| A. Four. B. Five. C. Three. D. One | ||
| 3. Where did Linda go shopping? | ||
[ ] | ||
| A. Times Supermarket B. Jiulong Great World C. the Department Store D. Star Shopping Mall | ||
| 4. How much money did Linda spend on them? | ||
[ ] | ||
| A. ￥150 B. ￥555 C. ￥375 D. ￥20 |