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搜索邀请的改进算法

              <a href="http://www.seds.org/nineplanets/nineplanets/nineplanets.html">The Nine Planets</a><br>
              <a href="http://www.dibonsmith.com/ori_con.htm">Orin</a><br>
              <a href="http://www.astro.umd.edu/education/astro/moon/phases.html">Phases of the Moon</a><br>
              <a href="http://www.pa.msu.edu/abrams/diary.html">Skywatcher's Diary</a> 
              <a href="http://www.mreclipse.com/Special/SEprimer.html">Solar Eclipses</a>

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          <td valign="top" width="58%" height="317"><a href="http://kidsastronomy.about.com/kids/kidsastronomy/"><br>
            Space/Astronomy</a><br>
            <a href="http://www.spacecamp.com/home.asp">Space Camp </a><br>
            <a href="http://Space.com/">Space com</a><br>
            <a href="http://www.spaceday.com">Space Day</a><br>
            <a href="http://spaceflight.nasa.gov/">Space Flight</a><br>
            <a href="http://spacekids.hq.nasa.gov/">Space Kids</a><br>
            <a href="http://www.spacelink.nasa.gov">Space Link</a><br>
            <a href="http://www.sal.wisc.edu/SpacePlace/">Space Place</a><br>
            <a href="http://sln.fi.edu/tfi/hotlists/space.html">Space Science Hotlist</a><br>
            <a href="http://seds.lpl.arizona.edu/ssa/docs/Space.Shuttle/">Space Shuttle</a><br>
            <a href="http://www.stsci.edu/resources/">Space Telescope Institute</a><br>
            <a href="http://starchild.gsfc.nasa.gov/">Starchild</a><br>
            <a href="http://stardate.org/">Star Date Online</a><br>
            <a href="http://www.starstuff.com/">Star Stuff</a><br>
            <a href="http://www.windows.ucar.edu/">Windows to the Universe</a> 
            <br>
            <a href="http://www.exploratorium.edu/ronh/weight/index.html">Your Weight on Other Worlds</a></td>
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            <p><span class="redcomic"><a name="environ"></a>Environment<br>
              </span><a href="http://www.urbanext.uiuc.edu/worms/">Adventures of Herman</a><br>
              <a href="http://www.home.aone.net.au/byzantium/ferns/about.html">About Ferns</a><br>
              <a href="http://aggie-horticulture.tamu.edu/kindergarden/index.html">Aggie Horticulture Just for Kids</a><br>
              <a href="http://www.lungusa.org/air/envprotairp.html">Air Pollution</a><br>
              <a href="http://ww.rainforest-alliance.org/kids&teachers/index.html">Allies in the Rainforest</a><br>
              <a href="http://www.arborday.org/">Arbor Day Foundation </a><br>
              <a href="http://www.soest.hawaii.edu/GG/ASK/askanerd.html">Ask an Earth Scientist</a><br>
              <a href="http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hyd/evap.rxml">Evaporation</a><br>
              <a href="http://www.150.si.edu/150trav/discover/evolve.htm">Evolving Earth</a><br>
              <a href="http://www.cotf.edu/ete">Exploring the Environment </a></font> 
              <font color="#FF0000"><br>
              <a href="http://www.fema.gov/kids/quake.htm">FEMA for Kids: Earthquakes</a><br>
              <a href="http://www.flmnh.ufl.edu/natsci/vertpaleo/fhc/firstCM.htm">Fossil Horses in Cyberspace</a><br>
              <a href="http://pubs.usgs.gov/gip/fossils/contents.html">Fossils, Rocks and Time</a><br>
              <a href="http://www.umich.edu/~gs265/geysers.html">Geysers </a><br>
              <a href="http://www.glacier.rice.edu/">Glacier </a><br>
              <a href="http://www.uvm.edu/whale/GlaciersGlacialAges.html">Glacier and Glacial Ages</a><br>
              <a href="http://www.epa.gov/globalwarming/">Global Warming </a><br>
              <a href="http://www.urbanext.uiuc.edu/gpe/">Great Plant Escape </a></font><font size="+1" color="#FF0000"><br>
              </font><font color="#FF0000">
<a href="http://www.amnh.org/rose/hope/">Hall of Planet Earth</a></font><br>
              <a href="http://www.hdra.org.uk/gh_comp.htm">How to Make Compost</a><br>
              <a href="http://www.howstuffworks.com/earthquake.htm">How Stuff Works: Earthquakes</a><br>
              <a href="http://www.extremescience.com/mainweather.htm">How's the Weather?</a><br>
              <a href="http://www.nhc.noaa.gov/1992andrew.html">Hurricane Andrew</a><br>
              <a href="http://www.miamisci.org/hurricane">Hurricane: Storm Science</a><br>
              <a href="http://www.blm.gov/nstc/soil/Kids/index.html">Just For Kids: Soil</a><br>
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            <p> <br>
              <a href="http://vulcan.wr.usgs.gov/Volcanoes/MSH/framework.html">Mount St. Helens</a> 

              <a href="http://HTTP.CS.Berkeley.EDU/~qtluong/gallery/index.html">Mountain Gallery</a><br>
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          <td valign="top" width="42%" height="170"><span class="redcomic"><a name="exper"></a>Experiments</span><br>
            <font color="#FF0000"> 
<a href="http://www.spacegrant.hawaii.edu/class_acts/AlkaRocketTe.html">Alka Rockets</a><br>
<a href="http://www.billnye.com/core.html?flashtarget=core.html&noflashtarget=noflash.html">Bill Nye &amp; Nye Labs</a><br>
           
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          <td valign="top" width="42%" height="113"> 
            <p><span class="redcomic"><a name="nobel"></a>Nobel Prize Winners</span><br>
              <font color="#FF0000">
<a href="http://almaz.com/nobel/peace/peace.html">Archives - Nobel Peace Prize Winners </a><br>
              </font><font color="#FF0000">
<a href="http://www.achievement.org/autodoc/page/pau0int-1">Linus Pauling - Chemistry 1954 </a></font></p>
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          <td valign="top" width="58%" height="113"> 
            <p><font color="#FF0000"><br>
              <a href="http://www.energyquest.ca.gov/scientists/index.html">Super Scientists</a></font><br>
              <font color="#FF0000"><a href="http://www.tibet.com/DL/biography.html">Tenzin Gyatso - Peace 1989 </a></font>
 <a href="http://www-groups.dcs.st-and.ac.uk/%7Ehistory/Mathematicians/Heisenberg.html">Werner Heisenberg - Physics 1932 </a><br>
              <a href="http://greatwomen.org/yalow.htm">Rosalyn Yalow - Physiology or Medicine 1977 </a></p>
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      <div align="right"><font class="revised" color="#CCFFCC">Revised 
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<a href="http://www.apl.org/index.html">Appleton Public Library</a>&nbsp;</div>
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      <div align="right"><a class=c1 href="http://www.apl.org/index.html">www.apl.org</a>&nbsp; 
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