While some commentators suggest that abstraction and complexity in scientific research are signs that a given direction is misguided, Lisa Randall, a professor of physics at Harvard, counters that these qualities instead reflect the success of human ingenuity in (i)_____ the increasingly (ii)_____ challenges that nature presents. They can, however, make it more (iii)_____ to communicate scientific developments, even to colleague.
答案：B,D,G