问题
名词解释
平均查找长度（ASL）
答案
参考答案：
在查找的过程中，一次查找的长度指需要比较的关键字次数，而平均查找长度则是所有查找过程中进行关键字的比较次数的平均值。
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平均查找长度（ASL）
参考答案：
在查找的过程中，一次查找的长度指需要比较的关键字次数，而平均查找长度则是所有查找过程中进行关键字的比较次数的平均值。
| 任务型阅读。根据短文内容，埴写表格。 | ||||
| Here are some accidents which often happen to children: ◆ Scald (烫伤)-Small children don't understand that hot water and hot drinks can be dangerous. Adults often forget the danger, too. It only takes a cup of tea or coffee, or a bath that's too hot to scald a child badly. ◆Falls-Children of all ages fall and hurt themselves from time to time. For babies, the danger is rolling off the edge of something, like beds, chairs or tables. For babies of two to four, climbing on furniture doesn't seem dangerous. It's just fun. But it's very easy for them to fall off a piece of furniture, down the stairs, out of a window or off a balcony (阳台). ◆Burns-Many children die in house fires and more are badly burnt. A cigarette (香烟) can easily start a fire. A child can also be burnt by a hot iron or matches. ◆Cuts-Class causes the most serious cuts. So do broken bottles, doors or windows. | ||||
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