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  3. Car Thieves Could Be Stopped Remotely Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in

Car Thieves Could Be Stopped Remotely Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in

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问题                 Car Thieves Could Be Stopped Remotely
    Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer, and a radio signal from a control center miles away will ensure that once the thief switches the engine【C1】______, he will not be able to start it again.
    For now, such devices【C2】______only available for fleets of trucks and specialist vehicles used on construction sites. But remote immobilization technology could soon start to trickle down to ordinary cars, and 【C3】______be available to ordinary cars in the UK 【C4】______two months.
    The idea goes like this. A control box fitted to the car incorporates【C5】______miniature cellphone, a microprocessor and memory, and a GPS satellite positioning receiver.
    【C6】______the car is stolen, a coded cellphone signal will tell the unit to block the vehicle’s engine management system and prevent the engine【C7】______restarted.
    There are even plans for immobilizers 【C8】______shut down vehicles on the move, though there are fears over the safety implications of such a system.
    In the UK, an array of technical fixes is already making 【C9】______harder for car thieves. "The pattern of vehicles crime has changed, " says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part【C10】______the motor insurance industry.
    He says it would only take him a few minutes to【C11】______a novice how to steal a car, using a bare minimum of tools. But only if the car is more than 10 years old.
    Modern cars are a far tougher proposition, as their engine management computer will not 【C12】______them to start unless they receive a unique ID code beamed out by the ignition key. In the UK, technologies like this【C13】______achieve a 31 percent drop in vehicle-related crime since 1997.
    But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner’s keys in a burglary. In 2000, 12 percent of vehicles stolen in the UK were taken by using the owner’s keys, which doubles the previous year’s figure.
    Remote-controlled immobilization system would【C14】______a major new obstacle in the criminal’s way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could go on the market sooner than the【C15】______expects.
【C8】
选项 A、whose
B、who
C、that
D、when
答案C
解析 从句子的结构来看，这里需要一个关系代词引导定语从句。关系代词的先行词immobilizers是物不是人，所以只能用that，不能用who。
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