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题目内容
In nineteenth century Puerto Rico, the consumption of salted cod spread among the entire population; on the tables of humbler families it became ____________ food, adding flavor to other products and supplying much-needed protein.
- Aan exotic
- Ban affordable
- Can essential
- Da supplemental
- Ea complementary
- Fa commonplace
D,E显示答案
以上解析由 考满分老师提供。