| 用方框中所给单词的适当形式填空。每词限用一次。 | |
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 took pictures of rocks and soil, which helped scientists understand 3______ our own planet works. Scientists even used a robot to make a map of a volcano. So robots are very 4______ machines. They play a very important 5______ in our life. They help people understand the world we live in. |