GRE Text Completion: Fundamental 24 Sets-GRE填空基础24套 - V2NJ807K0894KAF2!

Climbing the steep mountainside could make even experienced climbers ____________; not surprisingly, June, a novice, felt dizzy while still at the bottom. A. indefatigable B. vertiginous C. woozy D. pugnacious E. ambiguous F. equivocal