导读：想要在四年级考试中考出高分，本篇为学生们收集了2018年6月英语四级选词填空真题，并有新东方老师专门为同学们做出的专题解析，希望能够在各位同学备考四级的过程中提供帮助!今年四级考试在阅读这个板块里，总体难度仍然呈较为平稳的发展态势。首先第一步分析选项词性。今年名词考7个，动词考5个，形容词考2个，副词1个。如此一来，我们很快把15选1缩小到了最多是7选1，最少的情况是1选1。另外，请注意，名词通过单复数，动词通过时态和非谓语动词还可以进一步缩小范围。

　　Since the 1940s, 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(霾).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. It has been trying out monitoring that are 31 to yield minute-to-minute maps of 32 air pollution. Such stations will also be able to keep an eye on what is happening inside buildings, including offices.

　　To this end, Aclima has been 33 with Google’s Street View system. Davida Herzl, Aclima’s boss, says they have revealed pollution highs on days when San Francisco’s transit workers went on strike and the city’s 34 were forced to use their cars. Conversely, “cycle to work” days have done their job by 35 pollution lows.

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