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    【题目】Evidence obtained from observation and experiment is often used to ______ a scientific theory.

    A.confirmB.concludeC.consultD.confuse

    【答案】A

    【解析】

    考查实义动词辨析。句意：由观察和实验得出的证据通常被用来证实科学理论。A. confirm证实；B. conclude得出结论；C. consult 咨询，请教；D. confuse使更难于理解。根据常识可知，科学理论是需要观察和实验得出的证据来证实，故选A。

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