To a novice, problems and trials seem to come ______ while to an expert any challenge presents an opportunity.
A、successfully
B、seriously
C、successively
D、sufficiently
【正确答案】：C
【题目解析】：句意：对一个新手来说问题和考验似乎接踵而来，但对一个行家来说任何挑战都意味着一次机遇。successfully成功地;seriously严重地;successively相继地;sufficiently足够地。
