I don't think the experiment is ________ failure.At least we have gained ________ experience for future.
A．/；theB．a(chǎn)；theC．a(chǎn)；/D．/；/
C
failure意為“失敗的事”，表示抽象名詞具體化，故第一個(gè)空填不定冠詞a；experience意為“經(jīng)驗(yàn)”，是不可數(shù)名詞，故前面不填冠詞。
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