Drones(无人机) can do a lot of things for us, taking photos, delivering things frompackages to pizzas to beer and following wild animals. But they have other usesnow.
Can you believe it? Drones can serve people coffee.US company IBM has made this kind of drone. It can deliver coffee to sleepy people.The drone can know when to bring a cup of coffee by studying a person's data. Then,the drone will fly to the person. There is a special device(设备) under thedrone. It helps the drone to give people coffee. The drone can also learn aboutsomeone's coffee--drinking habits andpredictwhen someone needs their nextcup of coffee.
Drones can also save lives. One company in Africause drones to deliver medicine and blood fast and save many people's lives. Thedrones are able to fly at speeds of up to 60 mph and when they are within a minuteof the destination(目的地), the doctorsreceive a text and wait nearby. The drones drops off the package and then returnsto its home.
A 92--year--old hunter in Virginia was lost andhad to spend a night in the woods. The police searched for him all night but failedto find him. Luckily, the drone tracked him down in 20 minutes. Also, drones helpedthe firefighters know about the fire in the wildfire fight.
