GRE Text Completion: Maggoosh-GRE填空Maggoosh - 1VVU4446GZONH5U0Y

The recent spate of quality television dramas – while clearly indebted to the cinematic idiom of the 1970s – represents ____________ achievement: never before has any video medium been called on to sustain a narrative for 100 plus hours. A. a wondrous B. an incalculable C. an unambiguous D. an unprecedented E. a spotty F. a groundbreaking