科普阅读理解Word文档下载推荐.docx
- 文档编号:16111511
- 上传时间:2022-11-20
- 格式:DOCX
- 页数:21
- 大小:53.21KB
科普阅读理解Word文档下载推荐.docx
《科普阅读理解Word文档下载推荐.docx》由会员分享,可在线阅读,更多相关《科普阅读理解Word文档下载推荐.docx(21页珍藏版)》请在冰豆网上搜索。
)6.thousandsofyearsagoourearthwasvery____
_____________.
A.warm
B.hot
C.cool
D.cold
)7.Whatdidanimalsandpeopletrytodowhentheiceblocksmovedmouth?
A.theytriedtostopthemmoving.
B.Theytriedtomeltthem.
C.Theytriedtostayaheadofthem.
D.Theytriedtomovebehindthem.
)8.Themeltingicemaybehelpedtoform_____________.
A.mountainsandvalleys
B.thesun,themoonandtheearth
C.citiesandcountries
D.seas,lakesandrivers
)9.Theunderlinedword“climate”means_______________.
A.thefreezingice
B.theweatheroftheyear
C.themovingoftheiceblocks
D.aplantorananimal
)10.WhichofthesethingsmaybehappenedbecausetheIceAgeended?
a.Forestsgrew
b.Foodbecamehardertofind
c.Fishingbecameeasier
d.Thetemperaturedropped.
A.a;
b
B.b;
d
C.c;
D.a;
c
Doyoubelievethattheremightbelifeonotherplanets?
Wouldyouliketobethefirst“Earthling”togetintouchwithanalien?
Well,youcanstartyoursearchfromhome.Allyouneedisa
computerandtheInternet,andyoucanjointheprojectoftheUS-based
NationalAeronauticsandSpaceAdministration(NASA).
NASAstartedtheSearchforExtra-TerrestrialIntelligence(SETI)projecteightyearsago.Itsgoalistoexaminetheradiosignals(信号)fromnearbystars.Researchersbelievethatalargenumberofstarsintheuniversecouldhaveplanetsorbiting(circling)aroundthem.Andtheywanttoknowiftheseplanetshaveconditionssuitableforlifeforms.
Howdoestheprojectwork?
Thereisahugeradiotelescopewithalargebowl-shapeddishatArecibo,PuertoRico.ItcatchesradiosignalswhicharethenfedintoSETIcomputers.Theresearchershavetostudythousandsofradiosignalsdaily.Theyarelookingforsignalswhosepatterns(模式)wouldshowtheexistence(存在)ofhydrogenorwatermoleculesthatarenecessaryforlifeonEarth.Theycouldbeatitforyearsbeforeshowingasinglepositiveresult!
Ofcourse,eventheresearchersknowthattheycannotdoafastjobontheirown.Sotheywantasmanyhelpersaspossible.Evenyou!
Tojoinsearch,justdownloadSETI’sfreesoftware(SETI@home).Whathappensnextisfun.Whileyouareawayfromyourcomputer,theSETIprograminyourcomputerdownloadstheinformationonradiosignalsreceivedbytheradiotelescope.Itstudiestheinformationandsendtheresultbacktotheresearchcenter.
ThereareotherbenefitstooofhavingtheSETIprojectsoftwareinyourcomputer.Whenyouleaveyourcomputerunattended,insteadofseeingtheusualscreensaver,youcanfeastyoureyesonanamazing3-Dchartonthescreen.ThisshowsthatyourcomputerisbusystudyingSETIdataandsearchingforsignsofalienlife!
Morethan1824500peoplearoundtheworldarecurrentlyintheprogramandmorearejoiningineveryday.It’sslimchance,butwouldn’titbefantasticifyourcomputerweretobethefirsttodiscoveranaliensignal!
53.Whydoresearchersexaminetheradiosignalsfromnearbystars?
A.Theyplantohelppeoplewholiveonthestars.
B.Theyneedtomakesurethatthestarshaveplanets.
C.Theyhavetokeepintouchwiththealiensonthestars.
D.Theywonderifthestars’planetsaresuitableforlifeforms.
54.Whatdoesahelper’scomputerdointheresearch?
A.Itfindstheradiosignals.
B.Itlooksforotherplanets.
C.Itshowsapositiveresult.
D.Itstudiestheinformation.
55.What’sthewriter’spurposeinwritingthepassage?
A.Toprovethevalueofaresearch.
B.Toinvitepeopletojoinaproject.
C.Tosuggesttheexistenceofaliens.
D.Toadvisepeopletostudyplanets.
Whenbusterwasbroughtintotheanimals'
home,hewaswetandsmelly.ButJimmywhoworkedthereknowwhatsoapandwaterandagoodbrushingcoulddo.
Afterabath,JimmyputBusterinacageandgavehimsomefoodandfreshwater.
Busterwantedahome.Hewantedafamily.Hewantedayard.Mostofall,hewantedsomeonetolovehim.
Amancameovertothecage.Bustercurleduponhisblanketandclosedeyes.“He’snofun,”saidtheman.“He’stooquiet.”
Afamilycamealong.Busterb
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 科普 阅读 理解
![提示](https://static.bdocx.com/images/bang_tan.gif)