【单选题】
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
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 {{U}} (51) {{/U}}, he will not be able to start it again.
For now, such devices {{U}} (52) {{/U}}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 {{U}} (53) {{/U}} be available to ordinary cars in the UK {{U}} (54) {{/U}}two months.
The idea goes like this.A、control box fitted to the car incorporates {{U}} (55) {{/U}} miniature cellphone, a microprocessor and memory, and a GPS satellite positioning receiver. {{U}} (56) {{/U}}the car is stolen, a coded cellphone signal will tell the unit to block the vehicle’s engine management system and prevent the engine {{U}} (57) {{/U}}restarteD、
There are even plans for immobilizers {{U}} (58) {{/U}}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 {{U}} (59) {{/U}}harder for car thieves. "The pattern of vehicles crime has changed," says Martyn Randall of Thatcham, a security research organization based inBerkshire that is funded in part {{U}} (60) {{/U}}the motor insurance industry.
He says it would only take him a few minutes to {{U}} (61) {{/U}}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 {{U}} (62) {{/U}} them to start unless they receive a unique ID、code beamed out by the ignition key. In the UK, technologies like this {{U}} (63) {{/U}} achieve a 31 per cent 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 per cent 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{{U}} (64) {{/U}}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 {{U}} (65) {{/U}}expects.
B．was
C．were
D．are
网考网参考答案：D
网考网解析：
devices是复数形式，描述的也是目前的事情，所以应使用be的现在时复数形式are。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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