下面小编跟大家一起了解英语四级新闻听力分享，希望对大家的学习有所帮助。

1.

A.Rocketfuel.

B.Pressurefromsunlight.

C.Wind.

D.Nuclearfuel.

2.

A.about32squaremeters.

B.about22squaremeters.

C.about720squaremeters.

D.about2squaremeters.

听力文本

Amajorexperimentinsolarsailingissettolaunchthismonth.Solarsailingisamethodthatcanpush,orpropel,avehiclethroughspace.Aspacecraftisattachedtoalargesolarsailtocapturewindpressurefromsunlight.Thispressureistheforceformovement.AsmallspacecraftissettodemonstratethistechnologyafterbeinglaunchedfromarocketonJune22.Thespacecraft,calledLightSail2,willlaunchfromaFalconHeavyrocketbuiltbyAmericanaerospacecompanySpaceX.TherocketwilllaunchfromFlorida'sKennedySpaceCenter.

LightSail2isasmallspacecraftthatweighsaboutfivekilograms.LightSail2willbepartofaU.S.DepartmentofDefenseoperationthatwillalsolaunchabout24satellites.Amaingoaloftheoperationistodemonstratethepowerofsunlighttopropelspacecraftwithouttheneedforcostlyrocketfuel.Onceinspace,LightSail2willdeployitssolarsailsystem,whichcoversatotalareaofabout32squaremeters.Overtime,itwillseektoraiseitsorbitusingthesmall,

continualpushesfromsolarphotons.ProjectofficialssaytheyexpectLightSail2toflytoanorbitof720kilometershigh.ThiswillbethefirsttimenavigatingbylightinEarthorbit.TheamountoforbitalenergyneededtomoveLightSail2forwardcanbeincreasedbychangingthepositionofthesail.WhenasolarsailfacestheSundirectly,photonspushthespacecraftforward,awayfromtheSun.Butthesailcanmoveinotherdirectionspermittingcontroloverwhereittravels.

Question1:Accordingtothenewsreport,whatpropelsLightSail2inspace?

Question2:Accordingtothenewsreport,howmuchareawillthesolarsailsystemofLightSail2cover?

重点词汇

1.solar:oforfromthesun,orusingtheenergyfromthesuntoproduceelectricpower太阳的；来自太阳的；使用太阳能的

2.propel:topushormovesomethingsomewhere,oftenwithalotofforce推进，推动

3.aerospace:producingoroperatingaircraftorspacecraft航空航天工业的；航空航天器制造的

4.orbit:thecurvedpaththroughwhichobjectsinspacemovearoundaplanetorstar（天体围绕行星或恒星运行的）轨道

5.navigate:todirectthewaythataship,aircraft,etc.willtravel,ortofindadirectionacross,along,oroveranareaofwaterorland,oftenbyusingamap（常指借助地图）导航，确定…的方向

6.photon:asingleunitoflight光子，光量子

背景知识

行星协会宣布其下一代光帆驱动的卫星将于下个月发射。这个名为LightSail2的卫星将于6月22日从佛罗里达州肯尼迪航天中心由SpaceXFalcon重型火箭送入轨道。一旦LightSail2进入轨道，它将部署一个太阳光帆，其尺寸与拳击台大小相当，旨在利用太阳光子为提供卫星推进力。如果任务成功，LightSail2将成为一个利用太阳光提升地球轨道的航天器。Lightsail2将部署其四块双面太阳能电池板。大约一天后，四个三角形的聚酯薄膜帆展开。帆的总面积为32平方米。太阳帆的持续推力应该会使Lightsail2的轨道在太阳帆部署后一个月内提升到新的高度。

参考答案

Question1:B

Question2:A