题目

阅读理解Self-drivingcars have been backed by the hope that they will save lives by getting involvedin fewer crashes with fewer injuries and deaths than human-driven cars. But sofar, most comparisons between human drivers and automated vehicles have beenunfair.Crashstatistics for human-driven cars are gathered from all sorts of drivingsituations, and on all types of roads. However, most of the data onself-driving cars' safety have been recorded often in good weather and onhighways, where the most important tasks are staying in the car's own lane andnot getting too close to the vehicle-ahead9．如图所示的是光斜射到两种透明物质界面时发生反射和折射的现象．由图可知：AD是界面，GO是入射光线（用字母表示），折射角为60度．