单选题
Although most dreams apparently happen ______, dream activity may be provoked by external influences.
A、
homogeneously
B、
instantaneously
C、
spontaneously
D、
simultaneously
【正确答案】
C
【答案解析】
homogeneously同样地;instantaneously即刻,突如其来地;spontaneously自发地,不由自主地;simultaneously同时地。根据句意,大多数梦境都是自然产生的,故选C。
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