After an hour's discussion, the curriculum designers and computer programmers reached a consensus: that the new package of language learning materials should be both amusing and ______ for the users.
 
【正确答案】 A
【答案解析】 动词词义辨析。根据句中的连词and判定，空格填入的词应与amusing是同类词。选项中，enlighten意为“启发，启迪”，符合句意。故答案为A。engulf“吞没，狼吞虎咽”；enjoin“吩咐，命令”。