重庆市2017高考英语阅读理解选编（12）阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
(2013·苏锡常镇四市二调，C)Global Positioning Systems are now a part of everyday driving in many countries. These satellitebased systems provide turnbyturn directions to help people get to where they want to go. But they can also cause a lot of problems, sending you to the wrong place or leave you completely lost. Many times, the driver is to blame. Sometimesa GPS error is responsible. Most often, says Barry Brown, it is a combination of the two.Barry Brown is with the Mobile Life Centre in Stockholm, Sweden. The center studies humancomputer interaction, or HCI, especially communications involving wireless devices. We spoke to Mr Brown by Skype. He told us about an incident involvinga friend who had flown to an airport in the eastern United States. There he borroweda GPSequipped car to use during his stay.Barry Brown：“And they just plugged in an address and then set off to their destination.” And, then it wasn't until they w ere driving for thirty minutes that they realized they had put in a destination back on the West Coast where they lived. They actually put their home address in. So again, the_GPS_is_kind_of_“garbage_in_garbage_out”．Mr Brown says this is a common human error. But, he says, what makes the problem worse has to do with some of the shortcomings, or failures, of GPS equipment.Barry Brown：“One problem with many GPS units is they have a very small screen and they just tell you the next turn. Because they just give you the next turn, sometimes that means that it is not really giving you the overview that you would need to know that it's going to the wrong place.”Barry Brown formerly served as a professor with the University of California, San Diego. While there, he worked on a project with Eric Laurier from the Universityof Edinburgh. The two men studied the effects of GPS devices on driving by placing cameras in people's cars. They wrote a paper based on their research. It is called “The Normal, Natural Troubles of Driving with GPS.”Barry Brown: “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 that you needto have to be able to use a GPS because they sometimes go wrong.”Barry Brown says this goes against a common belief that GPS systems are for passive drivers who lack navigational (导航) skills.“The Normal, Natural Troubles of Driving with GPS” lists several areas where GPS systems can cause confusion for drivers. These include maps that are outdated, incorrect or difficult to understand. They also include timing issues related to when GPS commands are given.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：本文是一篇说明文。
GPS全球定位系统可以帮助人们找到想去的地方，但GPS也会带来许多问题，所以使用GPS全球定位系统是否可靠变得不确定。
1．What is the best title for this passage?A．Is GPS system reliable to use?B．What is the use of GPS?C．How to make the most of GPS?D．Blame! GPS or Passengers?答案：A 标题概括题。
文章第一段是全文的主旨段。
根据第一段可知，GPS全球定位系统可以帮助人们找到想去的地方，但GPS也会导致许多问题，所以使用GPS全球定位系统是否可靠变得不确定。
所以A项最适合做文章的标题，故答案选A。
2．What is the implication of the underlined part?A．GPS is just a garbage device.B．GPS will not correct human errors.C．GPS adjusts your wrong destination.D．GPS is just as smart as human beings.答案：B 句意理解题。
根据画线句子后面一句“Mr Brown says this is a common human error.”并结合上下文可知，画线句子所包含的意思是：GPS不能纠正人类的错误。
故答案选B。
3．Which is NOT mentioned as a GPS shortcoming in the passage?A．Small screen.B．Timing of commands.C．Outdated maps.D．Dear cameras GPS uses.答案：D 细节理解题。
根据文章第五段第一句可知，A项是GPS的缺点；根据文章倒数第二段可知，B、C两项均是GPS的缺点。
所以只有D项不是GPS的缺点。
故答案选D。
4．According to the passage, people commonly believe that ________.A．you have to know where to go when using GPSB．you need to have new competencies to use GPS wellC．GPS is proper for drivers with little sense of directionD．GPS is fit for people having good understanding of maps答案：C 推理判断题。
通读全文可知，人们普遍认为，GPS全球定位系统适合方向感差的人。
C项符合文义，故答案选C。
【健康环保类—阅读理解】（2015模拟题）Norm Pethrick，a 36yearold man in Australia’s northern city Darwin，was praised on Thursday for jumping onto a c rocodile’s back to save his wife Wendy at Litchfield National Park，a popular tourist spot southwest of Darwin，a local newspaper reported. Mrs Pethrick was standing on a river bank Wednesday afternoon when the saltwater crocodile lunged (扑)，locking its jaws on both her legs as it tried to drag her underwater.Norm Pethrick，who with his wife had been collecting water，immediately went to help her.He jumped onto the back，poked (戳) the eyes of the crocodile and finally got his wife free.Mrs Pethrick was later taken to Royal Darwin Hospital for a medical treatment.The doctors said she was suffering eight puncture wounds (伤口) in her right leg，a puncturewound in her left leg and a serious cut to one of her fingers.“This could have been a fatal and tragic situation，” said the general manager of Royal Darwin Hospital (RDH)，Dr Len Notaras，according to a local report.He said Mrs Pethrick was saved by her husband’s “quick and diligent actions”. Dr Notaras also said she would remain in hospital for three to four days and have an operation to clean the wounds，which are easy to get infected because of bacteria (细菌) on the teeth of the crocodile.1.This passage is most likely to be found in .A.a travel guideB.a newspaperC.a textbookD.a novel答案 B解析文章出处题。