Evidence obtained from observation and experiment is often used to _____ a scientific theory.

A. confirm       B. confine         C. conform       D. conceive

A


解析:

考查同字母動(dòng)詞詞義辨析。confirm(=support; make certain; give proof of)證實(shí)，確實(shí)；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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