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Obama’s success in presidential election proves that the color of one’s skin shouldn’t be a________to success.

A．barrierB．behavior
C．battleD．bunch

A

解析考查名詞詞義辨析。句意為：奧巴馬總統(tǒng)競選成功證明膚色不應(yīng)該成為成功的障礙。此處barrier意為“障礙”。

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