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1、Rarely _______ so difficult a problem.A.she could have faced with B.could have she faced withC.she could have been faced with D.could she have been faced with选Drarely置于句首，要用部分倒装，因此排除A和C。
2、从逻辑上来说，应该是她被置于这个问题之前，因此要用被动。
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