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标题: 大全一题 [打印本页]

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作者: vict2006    时间: 2007-3-6 15:25
标题: 大全一题

Q16:

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.

c

1. a greater proportion than it was
2. a greater proportion than
3. a greater proportion than they have been
4. which is greater than was so
5. which is greater than it has been

能解释下为什么选c吗？

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作者: vict2006    时间: 2007-3-8 13:07

请指点,谢谢

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