GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 7S2T8H0OB7Q87K75A

What makes the precisely oriented flight of a honeybee swarm to its new home so ____________ is that only a small percentage of its members know the swarm travel route and final destination. A. exact B. unpredictable C. amazing D. erratic E. reliable F. wondrous