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题目内容
Changes made to ecosystems in order to achieve a goal, such as food production or flood control, often _____ significant unforeseen trade-offs between other important products and services the ecosystems provide.
- Apredict
- Bdelay
- Cforetell
- DD.obscure
- Eyield
- Fengender
E,F显示答案
以上解析由 考满分老师提供。