D．both urban and rural areas have larger GDP

　　Which atatement is NOT true according to the passage?

　　A.The developing countries develop faster than the developed countries.

　　B. Cities contribute more to the GDP than the villagers.

　　C. Some problems are more easily solved in cities than in the country.

　　D. It’s impossible to solve urban problems by getting people out of cities.

　　7.The last paragraph implies that ____________.

　　A．ublic services are ineffective.

　　B．ities are increasing too fast.

　　C．opulation is not linked with development.

　　D．overnment should be responsible for the problems in the cities.

　　C

　　It’s illegal for the police to attach a GPS unit to your car without your permission, as the U.S. Supreme Court settled in 2017. But if the police are in hot pursuit of a bank robber or other escaping criminals that threaten public safety, a GPS tracker is acceptable. But exactly how can the police GPS track a car that is moving fast?

　　The answer to that question comes from Star Chase, a new police technology being used by a small-but growing number of law enforcement agencies. It allows the police to fire 4.5-inch glue-covered GPS bullet-like projectiles (发射体) from an air gun fixed in their police cars. If the GPS tracker makes contact with the escaping robber’s car, it’ll stick no matter how fast the vehicle is going. That way, the police will have a constant read on the car’s location and heading.

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