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.
【C18】

选项 A、applicable
B、affordable
C、available
D、reliable

答案C

解析 此句说到,一有车位空出,传感器就会通过无线把信息传到电脑上,再由电脑传给用户,手机应用程序的使用者们就会得到这些信息,可知答案为C项available“可得到的,可利用的”。电脑只是把传感器收集到的信息迅速传送给用户,至于这些信息合不合适或者可不可靠不得而知。由此A项applicable“适合的”、D项reliable“可靠的”不选。B项affordable“付得起的”,连接to后一般接商品。本句to后面是users是人,明显不对。
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