时讯：2018年6月英语四级选词填空原文及答案

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年上半年全国大学英语四六级考试将于6月16日举行，澎湃教育将全天候关注，给你带来第一手四六级考试信息。 以下是部分英语四级选语空填写原文和回答。

四级选语填写空原文和回答

26 pollutants

27莱斯特

28 consequence

29 innovation

30详细信息

31国际标准

32 outdoor

33 collaborating

34 inhabitants

35 creating

air quality

something in the air tonight

tacklingatmosphericpollutionishard。 more data will help

打印版| scienceandtechnology

feb 13th | los angeles

since the 1940s，southerncaliforniahashadareputationforsmog。 thingsarenotasbadasoncetheywerebut、accordingtotheamericanlungassociation、a health group、 losangelesisstilltheworstcityintheunitedstatesforlevelsof 26 ozone，nitrogen oxides，hydrocarbons and carbon monoxide。 gazingdownonthecityfromthegettycentre、anartmuseuminthesantamonicamountains、hazecanblotouttheviewofthepacificocean。 noris the state’sb adair 27 restrictedtoitssouth。 fresno，in the central valley，comestopofthelistinamericaforyear-roundparticulatepolution。 residents’heartsandlungsarestrainedasa 28 consequence。

all of which，combinedwithcalifornia’sreputationasthehomeoftechnological 29 innovation， makestheplaceidealfordevelopingandtestion and that is just what a clima，a fledgling firm in san francisco，hasbeendoingoverthepastfewmonto ithasbeentryingoutarraysofmonitoringstations，some of them mobile， thatare 31 intendedtoyieldminute-to-minute maps of 32 outodor suchstationswillalsobeabletokeepaneyeonwhatisgoingoninsidebuildings，。

thestationsinaclima’sarraysaretriangularandmeasure 20 cmalongaside。 each contains 12 off-the-shelfsensorsthatdetectpollutantssuchasozone，carbon monoxide and methane， aswellasthesmallparticlef theyalsomonitorbasicdatasuchastemperatureandhumidity，whichaffecthowpollutionformsandlingers。 theelementsofanarraymaybefixedandspacedaccordingtowhatexactlytheyaretryingtomeasure。 or they can be attached to vehicles，sothatentireroadscanbesampledroutinely。

to this end，aclimahasbeen 33 collaboratingwithgoogle’sstreetviewsystem，resultinginmapssuchastheonebelow。 davida herzl，A clima’s boss，says they have，as expected， revealedpollutionhighsondayswhensanfrancisco’stransitworkerswentonstrikeandthecity’s34 inhabitantswereforcedtotakethecar conver

aclima has already，at Google’sex Pense，MapPed 20，000 km ( 12，000 miles ) ofroadsinthebayareathisway。 itplanstoproduceadetailedmapoftheairqualityofcalifornia’smostpopulousregions―thosearoundlosangeles，SanFranciscoandhence。 itwillthenmoveontotherestofamericand ( msherzlhopes ) beyond。 for such outdoor work，mostofitscustomersarelikelytobecharitablefoundationsorgovernments。 butaclimahopestomakemoneyfromtheprivatesectoraswell，bymeasuringpollutionlevelsindoors。

again，google has acted as a guinea pig。 ithasbeentestingaclima’stechnologyitsofficesforthepasttwoyears，crunchingthroughmorethanhalfabilliondatapointsdaydayonthaial。 ithasbeeentingthe，ithe，I the result，according to ms herzl，isth eworld’slargestpollution-relateddatabaseonindoorenvironments。

withoutwindandotherweathertomovethemon、these data show、indoorlevelsofmanynastiescanbebetweentwoandfivetimesthoseoutside。 thegoogleplexisinsiliconvalley-arelativelycleanpartofthestate。 ifsuchratiosalsoapplyonasmoggydayinla，watch out。

打印版| scienceandtechnology

feb 13th | los angeles

资料来源:新东方