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    精英家教网 > 高中英语 > 题目详情
    Evidence obtained from observation and experiment is often used to ________ a scientific theory.
    A．confirmB．claim
    C．concludeD．calculate
    A
    解析　考查动词辨析。confirm证实；claim声称，断言；conclude得出结论；calculate计算，估计。句意为：由观察和实验得出的证据通常被用来证实科学理论。故A项正确。
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