One of my favorite things to do is hiking in mountainsBecausenobody likes the idea of get

One of my favorite things to do is hiking in mountains．Because
nobody likes the idea of getting lost，I always prepare before every
trip．But what’s the best navigation tool，a Global Positioning Sys-
tem(GPS)or a good old map and compass?
Five of my friends and I hiked through the mountains on a trail
(路线)I marked．One team of three carried a GPS，and the other[来源:Z+xx+k.Com]
team used a map and compass．
It took the GPS team 3 hours and 1 1 minutes to get through the
whole hike，however，it took the map and compass team only 2
hours and 49 minutes．The biggest problem the GPS team met was
that they lost the satellite signal(卫星信号)in some places．With
no map or compass，they had to walk around until they were in a
place where the signal was good．The map and compass team was
able to spot different landmarks，compare them to their maps and then use the compass to point them in the right direction．
When I head out on my future hikes，I’m bringing a map，a compass and a GPS to show me the way．
【小题1】The two teams ．
A．had the same navigation tool B．went along the same trail C．had the same problem
【小题2】The GPS team spent time than the map and compass team in the whole hike．
A．1ess B．more C．the same
【小题3】In the end，the writer found out ．
A．the map and compass were too old navigation tools to use any more
B．it wasn’t necessary to bring a map and a compass together with a GPS
C．the GPS had some disadvantages in hiking in mountainsB【小题2】B【小题3】C

(答案→)B【小题2】B【小题3】C 解析：【小题1】本文的第二段第一句是 Five of my friends and I hiked through the mountains on a trail(路线)I marked．意思是我和我5个朋友沿着我们所标的路线徒步通过山脉，从第一段的意思可知我和我的朋友分为两个对，使用不同的工具，一个队使用导航仪，一个队使用地图和指南针，故本题选B。【小题2】本文第三段提到使用GPS通过全程花费了3小时11分钟，而使用地图和指南针通过全程只花费了2小时49分钟，所以说使用GPS 所花费的时间要多，故本题选B。【小题3】本文第三段第三行是The biggest problem the GPS team met was that they lost the satellite signal(卫星信号)in some places．意思为GPS队遇到的最大问题是在某些地方会失去卫星信号，所以作者最后觉得GPS有一些缺点，故本题选C。

就是这个解释

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