新高考英语必备--- 精校word版课时提升作业 三十三 选修7 Unit 3

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1、新高考英语必备---课时提升作业三十三选修7　Unit3　Underthesea(限时35分钟)Ⅰ.阅读理解　　　　　　　　　A世纪金榜导学号79060337Untilrecently,scientistshadmappedonlyabout20percentoftheseafloor.Butourknowledgeofthedeepseasischangingbecauseofinformationfromsatellites.Scientistshaveproducedanewmapthatprovidesadetailedpictureoftheoceans.Themapisexp

2、ectedtohelpoceanographers(海洋学家),industryandgovernments.Thenewmapistwiceasdetailedasthemapmade20yearsago.DavidSandwellisageophysicsprofessorattheUniversityofCalifornia.Heandotherscientistsworkedonthemappingproject.Hesaystheyturnedtospacetolookdeeperintotheocean.Thescientistscollectedandstudiedinfo

3、rmationfromtwosatellites.SomeofthedatacamefromtheEuropeanSpaceAgency’sCryo-2satellite.ItwasplacedinEarth’sorbittowatchseaice.TheothersatelliteistheAmericanspaceagency’sJason-1.Itisstudyingthesurfaceoftheoceans.Scientistscombinedthesatellitedatawithimagesgatheredbysonar(声呐)equipmentonships.Sonarwo

4、rksbysendingsoundwavesthroughthewater.Whenthesoundwaveshitanobject,itspresenceisconfirmed.Thenewmapshowstheseafloorasithasneverbeenseenbefore.Itshowsthousandsofunderwatermountainsandplaceswherecontinentspulledapart.It-13-showswhereearthquakeswereactivemanyyearsago.Theyallareburieddeepunderneathth

5、eoceanfloor.DavidSandwellsaysthemapisapowerfultoolforfisheries,thoseinterestedinprotectingtheenvironmentandforoilexploration.“Thepetrolexplorationindustryisinterestedinhowtoreconnectthecontinents,bringthembacktogethertectonicallysoyoucanmapthebasinsononecontinentaledge—say,Africa—andusethattoesta

6、blishwherethesimilarbasinwouldbeontheothercontinentaledgeinSouthAmerica.”Ifscientistsknowthatinformation,theymaybeabletofindoilfields.Thenewdataalsowillhelpscientistsimprovetheirestimatesofoceandepths.Thisinformationcanhelpshipstravelsafelyandimprovemilitaryoperationsandscientificprojectsworldwid

7、e.MrSandwellthinksscientistswillmakemanymorediscoveriesastheyexaminethenewmapandtheinformationitprovides.【文章大意】这是一篇介绍关于新的海洋洋流地图的科普类文章。这个地图不仅能提供详细的大洋的图片而且还可以看到大洋底部的状况,我们通过这个地图可以判断多年前发生在海洋底部的大地震。1.WhichoneisNotmentioneda