GRE Text Completion: Fundamental 24 Sets-GRE填空基础24套 - 438Q08200A5HBK3Z!

In retrospect, the presidency of Dwight Eisenhower is perceived as ____________ period because it was relatively free of domestic turmoil. A. a tranquil B. an intractable C. a dire D. an intimidating E. a vanquished F. a serene