题目内容
Some historians think that the moon walk was an important proof of an American advantage over the Soviet Union in the space race.[音频]
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In recent years, Neil Armstrong was frequently seen by the public.[音频]
President Obama called Armstrong, “Among the greatest of American heroes, just of his time.”[音频]
It took NeilArmstrong and Edwin Aldrin _______ 3 hours to walk on themoon.[音频]
NeilArmstrong and Edwin Aldrin later traveled around theworld to share information about their ____________.
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