Hints: Odyssey Mars Earth genetic code DNA

Odyssey's discoveries mean that there is now a genuine possibility that there is life on Mars. And if so, then we’ll soon have to start reconsidering our place in the universe. Odyssey's discoveries are so sensational that scientists are beginning to speculate: What strange creatures might be there waiting for us? What might an alien look like? Would they, for instance, be based on the same biological principles as we are?
When we look at life on Earth we see that all life on Earth uses the same chemistry, the same genetic code, the same hardware, the same software. It's really interesting to wonder if life on Mars, if it started independently, would it use the same code, the same chemicals?
On Earth, everything is based on DNA, but could it be that life on Mars is completely different, that there is an utterly alien way of doing genetics.

这篇材料你能听出多少？点击这里做听写，提高外语水平>>