14．Driving with GPS Can Cause Difficulties
Global Positioning System （GPS） is now a part of everyday driving in many countries．It is a space-based system that provides position and time information in all weather conditions．GPS can help people get to where they want to go．（56）D When this happens，the driver is often to blame．Sometimes a GPS error is responsible．Most often，it is a combination of the two．
（57）A Barry Brown，a GPS technologist，took an incident as an example．His friend once flew to an airport in the eastern United States．There he borrowed a GPS-equipped car to use．He wrongly plugged in the home address in the west．It wasn't until he was driving for thirty minutes that he realized it．Mr．Brown says this is a common human error．But he says，"One problem is that GPS has a very small screen and it can just tell you the next turn．（58）B"
"The Normal and Natural Troubles of Driving with GPS"lists several areas where GPS can cause difficulties．They include maps that are outdated，incorrect or difficult to understand．（59）E GPS may fail due to these reasons and then lead to confusion for the drivers．
Although GPS sometimes causes difficulties when people are driving，the most attractive point of this system is its 100% coverage on the planet．It is important for you to have to know what you are doing when you use GPS．You need to have the"ability"to be able to use GPS because it sometimes goes wrong．（60）G
A．There are quite a few situations showing the problems of using GPS．
B．That means that it is not really telling you about going to the wrong place．
C．This space-based system is an important tool for civil and commercial users．
D．But sometimes it sends you to the wrong place or leaves you completely lost．
E．They also contain timing problems related to when GPS commands are given．
F．Advances in technology play an active role in modernizing GPS in many ways．
G．To make GPS well used，you need a good understanding of how drivers and GPS work．
分析 这是一篇说明文．讲述了开车使用GPS可能导致的问题，为了更好地使用GPS，你需要很好地驱动程序以及GPS是如何工作的．
解答 DABEG
56．D 考查事实细节．根据第一段"When this happens，the driver is often to blame．Sometimes a GPS error is responsible．"可知有时GPRS的错误也是有责任的，接下来应该讨论GPRS的错误了，D为正确答案．
57．A 考查事实细节．根据第二段"Barry Brown，a GPS technologist，took an incident as an example．His friend once flew to an airport in the eastern United States．There he borrowed a GPS-equipped car to use．He wrongly plugged in the home address in the west．It wasn't until he was driving for thirty minutes that he realized it．"可知后文用实例证明了GPRS错误导致出现的状况，A为正确答案．
58．B 考查事实细节．根据第二段"But he says，"One problem is that GPS has a very small screen and it can just tell you the next turn．"可知其中一个问题是GPRS的屏幕很小，它只能告诉你下一个拐弯处，B为正确答案．
59．E 考查推理判断．根据第三段""The Normal and Natural Troubles of Driving with GPS"lists several areas where GPS can cause difficulties．They include maps that are outdated，incorrect or difficult to understand．"可知GPRS出错的地方有：地图太旧或者不准确难以弄懂，E为正确答案．
60．G 考查事实细节．根据最后一段"It is important for you to have to know what you are doing when you use GPS．You need to have the"ability"to be able to use GPS because it sometimes goes wrong．"可知对于你使用GPRS来说，知道如何使用它是非常重要的，G为正确答案．
点评 做七选五题目时要注意以下规则：1．放进去通顺，这一点是基础．凡不通顺的必错无疑； 2、选项中有单词、词组、句子成分或与所选答案所在段内容重合；3、选项与其上句或下句之间有必然的逻辑关系； 4、选项全部内容都属于正确答案所在段．有时备选答案中可能含有甲乙两项内容，这时，只有当甲和乙都归属于本段时，答案才是正确的．
