make a difference
we don't need to make a different like scientists.but we could learn from them what they have a common in there lifves is they also wanted to know more about the things they interested in.as they proved the point,first they carefully observe what they are interested in.To explain what they have seen,they built a theory to see if matches the predictonal future events.how carefully they are!if we could do
as well as theirs,we have already make a difference.
追问谢谢!
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