题目内容：
回答题：Car Thieves Could Be Stopped Remotely (遥远地)
Speeding off (超速行驶) 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 (使车辆不能调动的装置), and a radio signal from a control center miles away will ensure that once the thief switches the engine ____(51), he will not be able to start it again.
For now, such devices _____ (52) only available for fleets of trucks4 and specialist vehicles used on construction sites．But remote immobilization (使车辆不能调动) technology could soon start to trickle (慢慢地移动) down to ordinary cars, and ______(53) be available to ordinary cars in the UK____(54) two months.
The idea goes like this．A control box fitted to the car incorporates ____(55) miniature cellphone (移动电话，手机), a microprocessor and memory, and a GPS satellite positioning receiver．____ (56) the car is stolen, a coded cellphone signal will tell the unit to block the vehicle’s engine management system and prevent the engine _____ (57) restarted.
There are even plans for immobilizers ____ (58) 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 _____ (59) 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 _____ (60) the motor insurance industry.
He says it would only take him a few minutes to _____(61) a novice (新手, 初学者) 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 (艰苦的) proposition (任务), as their engine management computer will not _____(62) them to start unless they receive a unique ID code beamed out by the ignition (点火) key．In the UK, technologies like this _______(63) achieve a 31 per cent drop in vehicle-related crime 15 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 (夜窃行为;盗窃)．In 2000, 12 per cent of vehicles stolen in the UK were taken using the owner’s keys double the previous year’s figure.
Remote-controlled immobilization system would _____(64) 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 ____(65) expects.
A．off
B．on
C．at
D．of
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