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He believed that the lack of scientific spirit was------the real problem is.A where B what答案选择A 为什么不选择B呢？不是表语从句吗？从句缺宾语，应该用what啊.....One o...

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回复(2) 2010-09-05 12:29 来自版块 -

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: Teacherhei：解析：本题考查代词的用法。四个选项中，只有that可以代替句单数可数名词或不可数名词，以避免重复。如：The output of steel this year has increased by 20% compared with that in 1992. 今年钢产量比一九...(2010-09-05 13:07)

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