Part I Directions:Fill the blanks according to what you hear.（每空10分）Self-Driving Car Kills PedestrianA self-driving Uber car that was part of a1 project hit and killed a pedestrian in Arizona this week. Neither the car nor the human safety driver2 for the woman who was pushing her bike on the3 . This is the first known fatality4 by a self-driving car in the US. Experts believe the sensors did not5 that the6 was a person, since the woman was 7 a bike that was carrying bags. Uber and a few other companies have8 their driverless fleet as investigators 9 who or what is at 10.