2010-2023历年陕西省西安交大阳光中学高三月考英语试卷（带解析）.docxVIP

2010-2023历年陕西省西安交大阳光中学高三月考英语试卷（带解析）

第1卷

一.参考题库(共25题)

1.根据短文内容，从下边的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。

A.Thedifferentstructureofblueholes.????????

B.Whyscientistsareinterestedinblueholes.????????

C.Howablueholecomesintobeing.

D.Blueholesexploringisbecomingpopular.

E.Rulestoobeywhendivingintoblueholes.

F.Thegeneraldefinitionofabluehole.

【小题1】______________

Ablueholeisafloodedseacavewithaholethatopensupatthelandssurface.Thesecavesystemsformincarbonaterock,oftenonislands.Someblueholeshaveveryspecialrockformationsandwaterchemistry.Farbelowsealevel,theycontainsomeoftheharshestenvironmentsonEarth,withnooxygenandnolight.Yettheseareasarefilledwithlifeformsthathaveadaptedtotheextremeconditions.

【小题2】___________

Blueholesgettheirnamefromthecolorsomehavewhenseenfromtheair.Thecolorisusuallyareflectionoftheskyonthewater.Blueholesaretheresultoferosioninwhichwaterbreaksdownrock.Rainfallingthousandsofyearsagocontainedchemicalswhichslowlyworeawayatthelimestonelandmass.Theseholeslaterfilledwithseawaterasthesealevelchanged.Therisingandfallingofsealevelsandthemixtureofsaltandfreshwaterfurtherworeawayatthesecaveformations.

【小题3】___________

Thesefloodedcavesystemscanbefoundintheocean,ortheycanbefoundinland.Oceancavesareaffectedbytides,sotheyalwayshavewatermovement.Butblueholesonlandareverystill.Theyhaveseverallayersofwater,chemicals,andbacteria.Thetoplayeroffreshwatercomesfromrainfall.Thislayeractslikeacapontopofthelayeredmixture,andkeepsoutoxygenfromtheatmosphere.Thefreshwaterfloatsonadenserlayerofsaltwater.Underneaththisisalayerofpoisonoushydrogensulfide,producedbybacterialivinginthewater.Underneaththislayerisanoxicseawater--waterthatdoesnotcontainanyoxygen.

【小题4】___________

In