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Life on Earth is basically proteins and DNA, so we can wonder if there is life on Mars will also be DNA and proteins, the same type of DNA, the same type of proteins. One might think that DNA is such

VOA常速英语2008年-Trouble Builds Behind Scenes in Wake of Kenya P

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Voice 1 Thank you for joining us for todays Spotlight program. Im Rachel Hobson. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1