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题目内容
The Federal Reserve Bank is one of the most ____________ institutions in the United States, yet many are not aware of the important operations and activities it has carried out during its lifetime.
- Adistinguished
- Bsecretive
- Cconsequential
- Dindispensable
- Emisunderstood
- Fmysterious
C,D显示答案
以上解析由 考满分老师提供。