多选题 The outbreak of disease could not be labeled pandemic, since despite its rapid ______ it remained confined to one small region.

A、 dissemination
B、 advancement
C、 spread
D、 symptoms
E、 improvement
F、 fading

【正确答案】 A、C

【答案解析】[解析] ●逗号说明前后同义重复。
●空格前的rapid与outbreak(爆发)同义重复。
●dissemination传播，advancement提升，spread传播，symptom征兆，improvement改善，fading衰落。答案选AC。
●注：这里advancement和improvement是干扰项，同表示“改善”。