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  3. Nowadays, amateur photography has become a troubling issue. Citizens of rich countries have got used to being watched by closed-

Nowadays, amateur photography has become a troubling issue. Citizens of rich countries have got used to being watched by closed-

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问题     Nowadays, amateur photography has become a troubling issue. Citizens of rich countries have got used to being watched by closed-circuit cameras that【C1】________ roads and cities. But as cameras【C2】________and the cost of storing data decreases rapidly, it is individuals who are taking the pictures.
    Some 10,000 people are already testing a【C3】________of Google Glass. It aims to reproduce all the functions of a smartphone in a device placed on a person’s nose. Its flexible frame holds both a camera and a【C4】________screen, and makes it easy for users to take photos, send【C5】________ and search for things online.
    Glass may fail, but a wider revolution is under way. In Russia, where insurance【C6】________is common, at least 1 million cars already have cameras with them that film the road ahead. Police forces in America are starting to【C7】________officers with video cameras, pinned to their uniforms, which record their interactions with the public.
    Widespread recording can already do a lot of good. Car-cams can help resolve insurance claims and encourage people to drive better. Police-cams can discourage criminals from making groundless complaints【C8】________police officers and officers from【C9】________ the suspects.
    Optimists see broader benefits【C10】________Plenty of people carry activity trackers to【C11】________their exercise or sleep patterns; cameras could do the job more effectively, perhaps also【C12】________their wearers’ diets. "Personal black boxes" might be able to transmit pictures【C13】________their owner falls victim to an accident or crime.
    Not everybody will be【C14】________by these prospects. A perfect digital memory would probably be a pain, preserving unhappy events as well as【C15】________ones. Suspicious spouses and employers might feel【C16】________review it.
    The bigger worry is for those in front of the cameras, not【C17】________them. The web is filled with sneaky photos of women,【C18】________in public places. Wearable cameras will make such furtive photography easier. The combination of cameras everywhere—in bars, on streets, in offices, on people’s heads—is a powerful and【C19】________one. We may not be far from a world【C20】________which your movements could be tracked all the time.
【C3】
选项 A、model
B、function
C、equipment
D、prototype
答案D
解析 从testing推断出，使用的这款眼镜(Google Glass)在试验当中。D项prototype意为“样机”，符合语义逻辑。A项model意为“模型”，模型不具备使用功能。B项function意为“功能”，下一句的It指代空格处所填单词，function代入后意思为“功能试图把智能手机上的所有功能都……，语义不通顺。C项equipment意为“设备”。通常指大型设备。
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