2020年7月第1套英语四级真题答案及解析.pdfVIP

一、PartⅡListeningComprehension

1、Question1isbasedonthenewsreportyouhavejustheard.

A、ShiptrafficintheAtlantic.

B、Warmcurrentsintheocean.

C、Particlesemittedbypowerplants.

D、ExhaustfromcarsinEurope.

解析：

NewsReportOne

听力原文

ANASAsatelliteorbitingoverPortugaltookphotographsthatrevealtheeffectsof

pollutionfromships.(1)[Oneofthephotosshowsathinfilmofcloudsabovethe

brilliantblueoftheNorthAtlantic,cutbywhitelinesofthickercloudsthatlooklike

scars.NASAofficialsexplainedthosethickercloudsaresignsofshiptrafficbelow.]

Whenshipspowertheirwaythroughtheocean,theypumpexhaustintothe

atmosphere,justascarsdo.Andthosemassiveamountofparticlescancausecloudsto

form.Getenoughofthoseparticlesinoneplaceasfromtheexhaustofaship,andthey

canleadtothecreationofnewcloudseasilyvisiblefromspace.Thesecloudscanbe

huge.Someofthemstretchhundredsofkilometersfromendtoend,NASAofficialssaid.

(2)[It’slikelythatthesesortsofcloudsarehavingsomeeffectontheglobalclimate,

accordingtoNASAofficials.]Butscientistsaren’tyetsurewhateffectithas.

1.WhathascausedthethickcloudsinthephotostakenbyaNASAsatellite?

解析：A。根据录音开头可知，美国宇航局卫星拍摄的照片中显示了北大西洋上空

的云层被一些较厚的线状云分隔开，随后美国宇航局官员解释说，这些较厚的云层

是下方海面船舶往来的标志，也就是说厚云层的出现与下方海面的航运是直接相关

的。A项中shiptraffic和Atlantic均为原词复现，故正确答案为A。

错项排除：录音后面提到了ocean（海洋）和particles（颗粒），但说的是当船舶驶

过海洋时，它们会像汽车一样将废气排入大气，大量的废气颗粒会形成云层。录音

中并没有提到warmcurrents和power

plants，故B、C两项排除。录音中说，船舶会像汽车一样排放废气，废气中的颗粒

达到一定程度会产生云层，D项利用cars和exhaust进行细节拼凑，但缺失关键信息s

hips，故D项错误。

2、Question2isbasedonthenewsreportyouhavejustheard.

A、Theyneedtobetakenseriously.

B、Theyhaveahugeeffectonfishery.

C、Theymaybeaffectingtheworld’sclimate.

D、Theymightbecausingtroubletoairflights.

解析：

NewsReportOne

听力原文

ANASAsatelliteorbitingoverPortugaltookphotographsthat