GRE Text Completion: JiJing 1373-GRE填空机经1373题 - LV18E6O_55WNH22WA

The concept of the Hellenistic period in ancient history has proved useful but also ____________, with scholars disagreeing on the dates when the period began and ended. A. slippery B. elusive C. fruitless D. deceptive E. futile F. compelling