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01Adventure on the Amazon River--更多亲子资源微信zfb5668.mp3
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02Alternative Fuel Cars--更多亲子资源微信zfb5668.mp3
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03Ancient Cliff Dwellers--更多亲子资源微信zfb5668.mp3
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04Animal Communication--更多亲子资源微信zfb5668.mp3
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05The Battle of the Alamo--更多亲子资源微信zfb5668.mp3
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06The Bird's Nest--更多亲子资源微信zfb5668.mp3
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07Book of Blood--更多亲子资源微信zfb5668.mp3
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08Bullying Hurts Everyone--更多亲子资源微信zfb5668.mp3
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09The Calgary Stampede--更多亲子资源微信zfb5668.mp3
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10The Case of the Vanishing Anasazi--更多亲子资源微信zfb5668.mp3
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11The Cat and the Tunnel--更多亲子资源微信zfb5668.mp3
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12Clara Barton_ The Angel of the Battlefield--更多亲子资源微信zfb5668.mp3
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13Code Talkers--更多亲子资源微信zfb5668.mp3
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15Daniel Inouye--更多亲子资源微信zfb5668.mp3
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16Dolores Huerta--更多亲子资源微信zfb5668.mp3
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18Empire State Building--更多亲子资源微信zfb5668.mp3
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19Everest_ On Top of the World--更多亲子资源微信zfb5668.mp3
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20Female Sports Stars--更多亲子资源微信zfb5668.mp3
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24Fungus Among Us--更多亲子资源微信zfb5668.mp3
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25Galileo--更多亲子资源微信zfb5668.mp3
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26Gems_ Treasures from the Earth--更多亲子资源微信zfb5668.mp3
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27Giant Insects--更多亲子资源微信zfb5668.mp3
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28The Gossip Monster--更多亲子资源微信zfb5668.mp3
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29Grasslands--更多亲子资源微信zfb5668.mp3
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31Groundwater--更多亲子资源微信zfb5668.mp3
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32Guy Fawkes Day--更多亲子资源微信zfb5668.mp3
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33Hoover Dam--更多亲子资源微信zfb5668.mp3
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34The House in the Desert--更多亲子资源微信zfb5668.mp3
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35How Advertising Works--更多亲子资源微信zfb5668.mp3
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36How Little John Joined Robin Hood--更多亲子资源微信zfb5668.mp3
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37Hungry Right Here_--更多亲子资源微信zfb5668.mp3
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38In the Name of Discovery--更多亲子资源微信zfb5668.mp3
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39Jazz Greats--更多亲子资源微信zfb5668.mp3
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40John Muir--更多亲子资源微信zfb5668.mp3
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41The Judicial Branch--更多亲子资源微信zfb5668.mp3
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42Katherine Johnson--更多亲子资源微信zfb5668.mp3
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43Labor Day--更多亲子资源微信zfb5668.mp3
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45Laura Ingalls Wilder_ A Pioneer's Life--更多亲子资源微信zfb5668.mp3
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46Life in Space--更多亲子资源微信zfb5668.mp3
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48The Lost Dutchman--更多亲子资源微信zfb5668.mp3
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49Machu Picchu--更多亲子资源微信zfb5668.mp3
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50Marie Curie--更多亲子资源微信zfb5668.mp3
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54Mudslides--更多亲子资源微信zfb5668.mp3
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55Mysteries of Flight--更多亲子资源微信zfb5668.mp3
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56Mysterious Caves--更多亲子资源微信zfb5668.mp3
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57Mysterious Shipwrecks--更多亲子资源微信zfb5668.mp3
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58Mythical Creatures of Ancient Greece--更多亲子资源微信zfb5668.mp3
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59Natural Wonders of the World--更多亲子资源微信zfb5668.mp3
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61Pat Summitt_ Coaching Legend--更多亲子资源微信zfb5668.mp3
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62Polynesia--更多亲子资源微信zfb5668.mp3
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63Prehistoric Trade--更多亲子资源微信zfb5668.mp3
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64Pyramids--更多亲子资源微信zfb5668.mp3
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65Rainforests--更多亲子资源微信zfb5668.mp3
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66Razor and the Wolves--更多亲子资源微信zfb5668.mp3
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67The Roman Empire Faces Attila--更多亲子资源微信zfb5668.mp3
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68Sister Sleuth and the Silver Blaze--更多亲子资源微信zfb5668.mp3
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69Space Camp--更多亲子资源微信zfb5668.mp3
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70Stories from Asgard_ Norse Myths--更多亲子资源微信zfb5668.mp3
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71The Sun--更多亲子资源微信zfb5668.mp3
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72Test Anxiety--更多亲子资源微信zfb5668.mp3
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73Tokyo Imperial Palace--更多亲子资源微信zfb5668.mp3
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75The Tuskegee Airmen--更多亲子资源微信zfb5668.mp3
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76Two Kettles--更多亲子资源微信zfb5668.mp3
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78Venus_ Beauty and Beast--更多亲子资源微信zfb5668.mp3
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79Volcanoes--更多亲子资源微信zfb5668.mp3
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80The War for North America--更多亲子资源微信zfb5668.mp3
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84Women and the Vote--更多亲子资源微信zfb5668.mp3
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85Word Smith, Private I--更多亲子资源微信zfb5668.mp3
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86World Traveler Ibn Battuta--更多亲子资源微信zfb5668.mp3
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87Yosemite and the Badge--更多亲子资源微信zfb5668.mp3
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88Margaret's Secret Message--更多亲子资源微信zfb5668.mp3
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