Passage 1: Questions 21-30
The race by automakers and technology firms to develop self-driving cars __(21)__ fueled by
the belief that computers can operate a vehicle more safely than human drivers. But that view is
now __(22)__ after the revelation that the driver of a Tesla Model S electric sedan was killed in an
accident __(23)__ the car was in self-driving mode. Federal regulators, who are in the early stages
of setting guidelines for autonomous vehicles, have opened a formal investigation __(24)__ the
incident, which occurred __(25)__ 7 May 2016 in Williston, Florida. In a statement, the National
Highway Traffic Safety Administration said preliminary reports indicated that the crash occurred
when a tractor-trailer made a left turn in front of the Tesla, and the car failed to __(26)__ the brakes.
It is the first known fatal accident involving a vehicle __(27)__ by itself by means of
sophisticated computer software, __(28)__, cameras and radar. The crash also casts doubt on
whether autonomous vehicles in general can consistently make split-second, life-or-death driving
decisions on the highway. Karl Brauer, an analyst with the auto research firm Kelley Blue Book,
said the accident served as a signal that the technology __(29)__ not be as advanced and ready for
the market __(30)__ some proponents have suggested.