2018年6月英语四级选词填空原文及答案

2019-05-02 06:08 来源:未知

  Air quality

  26 pollutants

  33 collaborating

  答案:

  Without wind and other weather to move them on, these data show, indoor levels of many nasties can be between two and five times those outside。 The Googleplex is in Silicon Valley—a relatively clean part of the state。 If such ratios also apply on a smoggy day in LA, watch out。

  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。

  Aclima has already, at Google’s expense, mapped 20,000km (12,000 miles) of roads in the Bay Area this way。 It plans to produce a detailed map of the air quality of California’s most populous regions—those around Los Angeles, San Francisco and the Central Valley—before the year is out。 It will then move on to the rest of America and (Ms Herzl hopes) beyond。 For such outdoor work, most of its customers are likely to be charitable foundations or governments。 But Aclima hopes to make money from the private sector as well, by measuring pollution levels indoors。

  32 outdoor

  To this end, Aclima has been 33 collaborating with Google’s Street View system, resulting in maps such as the one below。 Davida Herzl, Aclima’s boss, says they have, as expected, revealed pollution highs on days when San Francisco’s transit workers went on strike and the city’s 34 inhabitants were forced to take to their cars。 Conversely, “cycle to work” days have done their job by 35 creating pollution lows。

  2018年上半年全国大学英语四六级考试于6月16日进行,新浪教育24小时全程关注,为你带来第一手四六级考试资讯。以下为英语四级选词填空解析:

  30 detail

  31 intended

  Print edition | Science and technology

  作者:兰州学校新东方李逸飞老师

  Something in the air tonight

  G) domestic O) sum

  34 inhabitants

  D) consumers L) outdoor

  Print edition | Science and technology

  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。

  35 creating

  B) collaborating J) innovation

  The stations in Aclima’s arrays are triangular and measure 20cm along a side。 Each contains 12 off-the-shelf sensors that detect pollutants such as ozone, carbon monoxide and methane, as well as the small particles of which smog is composed。 They also monitor basic data such as temperature and humidity, which affect how pollution forms and lingers。 The elements of an array may be fixed and spaced according to what exactly they are trying to measure。 Or they can be attached to vehicles, so that entire roads can be sampled routinely。

  H) frequently

  32 outdoor

  E) creating M) pollutants

  SINCE the 1940s, southern California has had a reputation for smog。 Things are not as bad as once they were but, according to the American Lung Association, a health group, Los Angeles is still the worst city in the United States for levels of 26 ozone, nitrogen oxides, hydrocarbons and carbon monoxide。 Gazing down on the city from the Getty Centre, an art museum in the Santa Monica Mountains, haze can blot out the view of the Pacific Ocean。 Nor is the state’s bad air 27 restricted to its south。 Fresno, in the central valley, comes top of the list in America for year-round particulate pollution。 Residents’ hearts and lungs are strained as a 28 consequence。

  29 innovation

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