It is the urban driver’s most agonizing everyday experience: the search for an empty parking place. Circling, narrowly missing a

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问题     It is the urban driver’s most agonizing everyday experience: the search for an empty parking place. Circling, narrowly missing a spot, cleverly defeating other motorists to finally【C1】________into a space only to discover that it is【C2】________limits during working hours.
    In San Francisco, it is also a worrying traffic problem. Drivers【C3】________for parking spots generate 30 percent of all【C4】________traffic jam, city officials estimate. Now San Francisco proclaims that they have found a【C5】________—a phone app for spot-seekers that【C6】________information about areas with available spaces. The system, introduced last month, relies on wireless sensors【C7】________in streets and city garages that can tell【C8】________seconds if a spot has opened up.【C9】________the system could come with serious consequences. Safety advocates say that drivers on the search for parking could【C10】________focusing on their phones, not the road.  "It could be really
    【C11】________," said Daniel Simons, a professor of psychology at the University of Illinois, where he studies the science of attention. And, he said, it could also be【C12】________: "Most people are looking for parking spaces in places that have a lot of traffic and a lot of【C13】________." City officials acknowledge the potential【C14】________. They are urging drivers to【C15】________before they pull up the city’s iPhone app, or to do so before they leave home. But the spots can disappear quickly,【C16】________any circling driver knows, and for plugged-in motorists in the habit of texting or glancing at the GPS, the urge to use the parking app is certain to【C17】________as the frustration does. San Francisco has put sensors into 7,000 metered parking spots and 12,250 spots in city garages. If spaces in an area open up, the sensors communicate wirelessly with computers that in turn make the information【C18】________to app users within a minute. On the app, a map shows which blocks have lots of places (blue) and which are【C19】________(red). San Francisco’s is by far the most widespread【C20】________that several cities, universities and private parking garages are experimenting with.
【C14】

选项 A、issue
B、phenomenon
C、problem
D、mess

答案C

解析 上文提到这个寻找车位的系统会带来严重后果,容易使司机分心、造成危险等一些问题。由此可推断,城市官员认识到这一潜在问题,所以敦促司机安全地使用手机应用程序,故选C项problem“问题”。A项issue是指特别重要或大众关注、议论的问题,开车时用手机程序造成危险,没有什么可争议、议论的。B项phenomenon“现象”一般指已经发生的情况,与potential“潜在的,有可能的”无法搭配。D项mess“混乱;困境”,本句说的只是一个潜在的问题,还没有出现,不知道是否会达到“混乱”的程度。
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