大学英语综合教程 第一册 unit 3b

[05:34.58]was potentially one of the great discoveries of our time.
[05:39.72]After the excitemnt wore down and initial papers were published,
[05:45.73]other researchers began looking at samples from the same meteorite.
[05:52.08](4)Some concluded that the "evidence of life"was mostly contamination
[06:00.12]from Antarctic ice or that there was nothing organic at all in the rock.
[06:07.36]Was this a failure of science,as some news reports trumpeted?
[06:12.92]No!It was a good example of the scientific method working the way it is supposed to
[06:20.55]Scientists spend years on research,announce their findings,
[06:26.01]and these findings are examined by other scientists.
[06:30.84]That's how we learn.
[06:33.48]Like climbing a mountain,we struggle up three feet and fall back two.
[06:40.74]It's a process filled with disappointments and reverses,
[06:45.60]but somehow we keep moving ahead.