GRE Text Completion: ETS Fundamental-GRE填空ETS基础 - 73T86S9VNCI77W5AX

All (i)____________ biological traits fall into one of two categories: those giving their possessors, evolving adaptability, greater (ii)____________ the environment and those rendering them more independent of it. A. beneficial B. detachment from C. neutral D. control over E. noxious F. freedom from