But the success of science, both its intellectual excitement and its practical application, depends upon the self - correcting c

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问题     But the success of science, both its intellectual excitement and its practical application, depends upon the self - correcting character of science. There must be a way of testing any valid idea. It must be possible to reproduce any valid experiment. The character or beliefs of scientists are irrelevant; all that matters is whether the evidence supports their contention. Arguments from authority simply do not count; too many authorities have been mistaken too often. I would like to see these very effective scientific modes of thought communicated by the schools and media; and it would certainly be astonishment and delight to see them introduced into politics. Scientists have been known to change their minds completely and publicly when presented with new evidence or new arguments. I cannot recall the last time a politician displayed a similar openness and willingness to change.
The passage mainly discusses________.

选项 A、some similarities between politicians and scientist.
B、an important characteristic of science.
C、practical applications of science.
D、he rewards of a valid experiment.

答案B

解析 这是一道提炼主旨的题型。文中第一句“But the success of science,both its intellectual excitement and its practical application,depends upon the self一correcting character of science.”主要意思是说明科学的成功在于其自我更正的特性,任何正确的观点都经得起试验认证。之后,文章又提到“Arguments from authority simply do not count;too many authorities have been mistaken too often.”表明证据在科学研究中至关重要,而权威人士也经常犯错。在文章最后“Scientists have been known to change their minds completely and publicly when presented with new evidence or new arguments.”阐述了科学家在出现新的事实和证据时会公开修正自己的观点,而科学家和政客的区别就在于这种自我更正的特点。可见,文章的主旨是科学的自我更正,这个重要的特性,选项B正确。
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