2. 外语
  3. If you happen to be shopping in the Ginza district of Tokyo, you might get a message on your mobile phone telling you which of t

If you happen to be shopping in the Ginza district of Tokyo, you might get a message on your mobile phone telling you which of t

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问题     If you happen to be shopping in the Ginza district of Tokyo, you might get a message on your mobile phone telling you which of the shops you’ re near has a sale on at the【C1】mo________. But do the shops know how to contact you? How do they know where you are?

    The answer is RFID—radio freguency identification. RFID is in many ways a great idea. How does it work?Tiny computer chips ( or  " tags " ) are【C2】________(attach) to objects, clothes or packaging. These chips can be read by a central computer network. If you want to find your lost dog or to research the movements of ants, RFID is very【C3】  ________(help). This is what researchers at Bristol University【C4】 ________in 2009. Just put the tag on the animal and watch from a safe 【C5】dis________. RFID has commercial uses too. Delta Airlines uses it to track luggage and the US Department of Defense uses it to count its weapons and vehicles.
    So how can RFID be used in【C6】adv________? Well, imagine your clothes have an RFID tag. Every time you enter the shopping mall a scanner "reads" your name, age and buying habits. It knows which shampoo you buy, which bread you prefer. The scanner then uses this information to target you【C7】________special offers. Just a few years ago, this sounded like science fiction, but it’ s becoming more and more common.
    So, what is the problem? The problem is that great technology is often used for less great【C8】pur________. RFID could easily be used to track people instead of products. The boss may decide to track his workers—to see【C9】________spends their time smoking outside or taking long lunch breaks.     The government may want to see which books you are reading or which political gatherings you are attending. As all shoppers know, everything costs something. The cost of RFID may be your【C10】________(private).
【C3】
选项
答案helpful
解析 该句的意思是“如果你想找到你丢失的狗或者研究蚂蚁的移动路径，RFID是非常有帮助的”。此处考查系表结构，应填入所给词的形容词形式。故填入helpful。
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