多选题
Because playing a musical instrument increases brain activity, it is sometimes used as a(n) ______ to promote learning in children.
【正确答案】
B、D
【答案解析】[解析] ●句子前后同义重复，所以空格填入一个表示逻辑同义的词。
●condition条件，incentive刺激，highlight亮点，stimulus刺激，dictum格言，aphorism格言。答案选BD。