GRE Text Completion: ETS Fundamental-GRE填空ETS基础 - 44XY373B0J4A01N7X

Although supernovas are among the most (i)____________ of cosmic events, these stellar explosions are often hard to (ii)____________, either because they are enormously far away or because they are dimmed by intervening dust and gas clouds. A. remote B. detect C. luminous D. foresee E. predictable F. disregard