Many subatomic nuclear particles are (i)_____ and nearly (ii)_____: they are hard to track as well as to detect.
A. unstable D. explosive
B. charged E. imperceptible
C. elusive F. indivisible
这道题第一个空A和C感觉区别不是很大 不过仔细区别还是C略好一点 请问大家GRE考试的题会考的这么细腻吗 这道题仿真度怎样 谢谢大家