Evidence obtained from observation and experiment is often used to _____ a scientific theory.
A. confirm            B. confine             C. conform           D. conceive

【解析】A. 考查同字母詞義辨析。confirm(=support; make certain; give proof of)證實，確實；confine...to把......限制于；conform (to)使一致，符合，遵守；Conceive 1)想到，想出；conceive of想象。

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