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The price of vegetables flucuates according to the weather.
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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 nas-ty 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 trucks 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 cell- phone(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 organi- zation 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 minim um of tools. But only if the car is more than lo 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 ignitionc点火)key. In the UK, technologies like this ____________(63) 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(盗窃). In 2000,12 percent 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 devellped standards for a system that could go on the market sooner than the_________(65) expects.
Some doctors doubt the possibility of donor hearts being replaced by artificial ones
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