In the opening paragraph, the author introduces his topic by ______. When a traveler is in an unfamiliar place, ______.

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问题 In the opening paragraph, the author introduces his topic by ______.
When a traveler is in an unfamiliar place, ______.

选项 A、mobile roaming will meet his needs.
B、he wants to know something about it.
C、Location-based services play a key role in his traveling.
D、he must understand the roles of Location-based services.

答案B

解析 文章倒数第二句:But aiming such services at tourists makes sense-since people are more likely to want information when in an unfamiliar place.由此句可知当一个人在陌生的地方时,他更想得到关于此地的信息。因此B正确。其实由于旅行者身处陌生之地,所以才更有可能需要"定位服务"信息,而需要这些信息的目的是了解这个地方,C是达到B的手段,因此C不如B准确。任何事情的产生都会满足另外一个事物的需求,因此应慎选"…满足…"的选项,故A也错误。选择D选项的同学应该是没有弄懂make sense这个词组的含义,make sense"有意义";而 make sense of...才是指"搞清…的意思",与understand同义。
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