题目内容：

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

When you think of robots, what is the first thing that comes to your mind? Do you think of science fiction movies like Star Wars, 1. robots of all shapes and sizes are part of daily life? Robots were once just a product of fiction. The word itself comes from the play Rossum’s Universal Robots, 2.(write) in 1920 by Karel Capek.

Today most robots don’t look human. They appear in many forms and 3. (program) to perform a wide variety of things, from working in factories 4. exploring the surface of Mars. But there is a surprising problem in the world of robots: What humans find easy is 5.(extreme) complicated for a robot. For example, picking up clothes in a messy room is simple for humans, 6. it is difficult for robots to do that. 7. problem is programming a robot to pick up some objects of different shapes and sizes without damaging them.

It turns out that one of 8.(difficult) things to improve in robots is their flexibility. Exciting 9.(develop) in making human-like hands and legs are underway. But the biggest advancements are to teach robots to guess what they can do and 10. they help us with daily tasks.