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英语四级真题阅读理解分享 英语四六级报名

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2019年09月13日 12:01:25
下面小编跟大家一起了解英语四级真题阅读理解分享,希望对大家的学习有所帮助。
Since the 1940, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the United States for levels of 26 .Gazing down on the city from the Getty Center, an art museum in the Santa Monica Mountains, one would find the view of the Pacific Ocean blurred by the haze. Nor is the state`s bad air 27 to its south. Fresno, in the central valley, comes top of the list in America for year-round pollution. Residents` hearts and lungs are affected as a 28 .

All of which, combined with California`s reputation as the home of technological 29 , makes the place ideal for developing and testing systems designed to monitor pollution in 30 .And that is just what Aclima, a new firm in San Francisco, has been doing over the past few months. Ithas been trying out monitoring stations that are 31 to yield minute-to-minute maps of 32air pollution. Such stations will also be able to keep an eye on what is happening inside buildings, including offices.
Tothisend,Aclimahasbeen 33 withGoogle'sStreetViewsystem. DavidaHerzl, Aclima's boss, saystheyhaverevealedpollutionhighsondayswhenSanFrancisco'stransitworkerswent onstrikeandthecity`s 34 wereforcedtousetheircars. Conversely, "cycletowork" dayshave donetheirjobby 35 pollutionlows.

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