The purpose in writing this text is______. A: to tell people how serious the damage caused by landslides is B: to tell people that sending workers to stabilize mountainsides is a risky job C: to introduce a product that can be used to stabilize mountainsides D: to show people how to use a new robot

The biggest advantage of this robot is that______. A: it will be faster and cheaper than manual labor B: it can climb mountainsides, drill holes, insert bars and cement C: it can collect data on the slope's stability D: it can drill without a human being on board

Each winter holidaymakers in the mountains come face to face with death because ________. A: they fail to realize how dangerous avalanches can be B: they are not expert enough at skiing on the fixed runs C: they are trying to avoid where avalanches happen D: they ski great distances down the mountainsides