3.A　推理判断题。根据文章最后附加的包裹延误报告单可以推知,John Jackson已经提交了包裹延误报告,故选A项。

　　4.D　目的意图题。本文主要介绍了顾客如何通过航空公司的包裹延误处理中心取回自己被延误的包裹,故选D项。

　　B

　　The United States officials are close to approving new requirements for enabling vehicles to communicate with each other.Officials hope the new technology will reduce the number of traffic accidents.Automobile manufactures may be required to equip all new cars with what are being called ‘vehicle-to-vehicle’ communication devices within the next 3 years.

　　Vehicle-to-vehicle,or V2V,is a communication technology.It enables vehicles to share information about their speed and movement at a rate of 10 times a second.Cars will be able to identify possible dangers within about 300 meters.The cars will then warn their drivers or even take action to avoid an accident.

　　The drivers will be able to see,hear and even feel the warning signals through shaking of the seat.The U.S.National Highway Traffic Safety Administration expects the new system to reduce the number of car accidents by as much as 80 percent.

　　Greg Winfree is with the US Department of Transportation.He says the new technology will change the way people deal with traffic accidents.“The way to look at it is the first 50 years of transportation safety were focused on surviving crashes.We see the future as technology that avoids crashes overall,” said Winfree.

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