2017年6月大学英语四级听力文本

【News Report 1】 One of Google's self-driving cars crashed into a bus in California last month. There were no injuries. It is not the first time one of Google's famed self-driving cars has been involved in a crash, but it may be the first time it has caused one. On February 14th the self-driving car, travelling at 2mph (3km/h), pulled out in front of a public bus going 15mph (24km/h). The man in the Google vehicle reported that he assumed the bus would slow down to let the car out, and so he did