4 25s B:G is a kind of protein. P:rats that prefer to eat fatty food has more G than rats that prefer lean. C:G causes rats to crave fatty food.(因果型结论） P(support):there is no other reason. 选D A irrelevant B irrelevant C irrelevant D bingo E irrelevant
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发表于 2011-12-16 12:16:57
