Part I Directions: Fill the blanks according to what you hear.( 每空1 0 分 ) Self-Driving Car Kills Pedestrian A self-driving Uber car that was part of a 1 project hit and killed a pedestrian in Arizona this week. Neither the car nor the human safety driver 2 for the woman who was pushing her bike on the 3 . This is the first known fatality 4 by a self-driving car in the US. Experts believe the sensors did not 5 that the 6 was a person, since the woman was 7 a bike that was carrying bags. Uber and a few other companies have 8 their driverless fleet as investigators 9 who or what is at 10 .