Mr. Brown says, “One of the things that struck us, perhaps the most important thing was that you have to know what you’re doing when you use a GPS. There are these new skills that people have developed. There are these new competencies（资格） that you need to have to be able to use a GPS because they sometimes go wrong. This goes against a common belief that GPS systems are for passive drivers who lack navigational skills.”

　　Barry Brown says to make GPS systems better we need a better understanding of how drivers, passengers and GPS systems work together.

　　文章大意：全球定位系统(简称GPS)现在已经成为许多国家日常驾驶的一部分。这些基于卫星的系统为人们提供转弯导向以帮助其到达目的地，然而它们也会导致许多问题。

　　41. According to Barry Brow, in most cases, ________ are blame for the problems.A. human errors

　　B. GPS errors

　　C. errors caused by both drivers and GPS

　　D. errors caused by putting in a wrong address

　　【答案】【解析】Many times, the driver is to blame. Sometimes a GPS error is responsible. Most often, says Barry Brown, it is a combination of the two.是司机和GPS两方面的原因，故选C。

　　42. The example of Barry Brown’s friend is used to show that _________ .

　　A. GPS is nothing but garbage

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