Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.
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Aa greater proportion than it was
分析该选项
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Ba greater proportion than
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Ca greater proportion than they have been
分析该选项
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Dwhich is greater than was so
分析该选项
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Ewhich is greater than it has been
分析该选项
显示答案
正确答案: B