重庆市2017高考英语阅读理解选编（12）附答案解析
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C．Outdated maps.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 GPS
B．you need to have new competencies to use GPS well
C．GPS is proper for drivers with little sense of direction
D．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。