①Professor Matsuno noticed that rescue teams were having difficulty finding survivors after the earthquake. ②He wished he could help.Then on idea came to him. ③He realized perhaps he could make Motohiro's dream come ture. ④So he started developing rescue robots. ⑤Later,many other researchers around the world also took up the callenge. ⑥The work continued for some years. ⑦In 2001,rescue robots were used in a real disaster for first time. ⑧It was when the World Trade Center in New York was attacked. ⑨The robots crawled through the rubble seaching for missing people. ⑩Although no survives were discovered,the robots found about ten dead bodies. ⑪They could enter spaces too small or too dangerous for humans or search dogs. ⑫Moreover,they had special sensors which enabled them to gather more information than humans could.
