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Evidence gained from observation and experiment is often used to _______ a scientific theory. 
A．concernB．confirmC．consultD．combine
B

試題分析：考查動詞詞義辨析。A涉及，關系到；B確認；C咨詢；D使…結合；句意：通過觀察和實驗得來的證據通常被用來確認科學理論。根據句意說明B正確。
點評：對于動詞詞義辨析題目，首先可以從句意著手，看懂句意是解答此類題目的關鍵，其次四個選項的意思也要了如指掌。這對于平時學生的學習仔細度提出了要求，學生在平時的學習中要勤積累，多記憶，多查字典，以便在考試時能夠迅速準確的答出。
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