Artificial Intelligence （人工智能）or AI has been used in many different fields to perform certain tasks， including education， heavy industry， toys and games and so on．
Education
There are a number of companies that create robots to teach subjects to children， ranging（范围）from biology to computer science． With the help of AI， MOOC， or Massive Open Online Course， allows students from around the world to take classes online． Though such tools have not become popular yet．
Heavy Industry
Robots have become common in many industries， and are often given jobs that are considered dangerous to humans． Repetitive （重复的）jobs may lead to mistakes or accidents while robots can be very helpful to avoid them．
Toys and Games
Companies like Mattel have been creating Al﹣enabled toys for young people， even for kids aged three．
Those toys are able to understand conversations， give smart answers and learn quickly． AI has also been used in video games， for example video game bots（视频游戏机器人），which are designed（设计） to fight against you in the game．
根据短文内容填空，每空不超过2个词．
| AI Is of Great Use |
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| Education |
• Companies create robots（2） subjects to children． • MOOC allows students from around the world to take classes online． |
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• Robots are often given jobs that are considered （3） to humans． • Robots can be very helpful to avoid mistakes or accidents． |
| Toys and Games |
★ Mattel has been creating Al﹣enabled toys for young people， even for（4） aged three． ★Those toys are able to understand conversations， give smart answers and learn（5） ． |
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