人教版高中英语：必修4 Unit 2 Working the land 单元练习（含答案）

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4.2 Working the land
Ⅰ. 阅读理解
A new study published this week in the journal Nature Communications has concluded that a 100 percent change to organic food production in England and Wales would actually lead to a great increase in greenhouse gas emissions. In turn, this would contribute to further cl...