阅读短文，选词填空。 jobs   map   look   useful   took   how   part What do you know about a robot? Robots are machines that can be made to do certain things. They are in all shapes. For example, puppy (a young dog) robots 1 like real ones. They jump and bark (吠). Robots can do many 2 people can't do. Robots can go where people can't go and bring back important information. In 1997, scientists sent a robot to Mars. It 3 pictures of rocks and soil, which helped scientists understand 4 our own planet works. Scientists even used a robot to make a 5 of a volcano. So robots are very 6 machines. They play a very important 7 in our life. They help people understand the world we live in.