问题 填空题

按规律填数字,写阿拉伯数字即可。

1. one, two, three, four,        

2. one, three, five, seven,        

3. one, two, four, five, seven,        

4. ten, nine, eight,      

答案

1. five或5  2. nine或9  3. eight或8   4. seven或7

名词解释
单项选择题