A. helping to decrease the cost of controlling traffic

　　B. reducing the time for emergency workers to reach accident areas

　　C. making road signals and vehicles interact with each other

　　D. getting information from the technology company Google

　　59.By saying "visualization" , the writer means _____.

　　A. emergency workers can better understand software and applications

　　B. emergency workers can see what is happening on the scene

　　C. the gathered information is visible to whoever wants it

　　D. traffic flow is under constant observation

　　60. It can be seen from the passage that _____.

　　A. new road signals will be installed to ensure the system works properly

　　B. congestion on the freeway means more traffic accidents

　　C. the system is designed mainly for emergency workers

　　D. the system has already been put into use in America.

　　C

　　I love seeing Europeans line up in airports to applaud arriving refugees. But humanitarianism (人道主义) will not guide policy for long. We liberals need to argue from Europe’s self-interest: our continent has the need, the space and the ability to accept people.

　　Many European countries are gradually turning into old people’s homes. Germany, Italy, Spain and others have some of the lowest birth rates in human history. It is predicted that about one-third of their populations will be aged over 65 in 2050. Germany needs to import at least 350,000 people a year to keep its workforce stable. Suddenly, young ambitious workers are pouring into the country as if called by a genie (精灵) with a lamp. No wonder Angela Merkel, German Chancellor, has been more welcoming than David Cameron, British Prime Minister. But all over Europe, carers for old people are already in need. Norway found oil under the seabed but it would have been better off if it had discovered 50,000 nurses there instead.

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