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备战2011高考各地模拟题分类汇编：阅读推断词义篇
词数：275 体裁：科技说明文 难度：4
Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in a bid
to cut the emission of greenhouse gases blamed for global warming.
词数：275 体裁：科技说明文 难度：4
Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in a bid
to cut the emission of greenhouse gases blamed for global warming.
