单选题 Science is based on experiment, on a willingness to ______ old dogma, on an openness to see the universe as it really is.
【正确答案】 C
【答案解析】[解析] 动词词义辨析。根据句中的experiment，willingness，openness，really判断，空格应填入与see同类的动词。选项中，只有challenge(挑战)符合句意。故答案为C。