An increasing proportion of our population, unable to live without advanced medical ________ will become progressively more reliant on expensive technology.
句意：越来越多的人将会变得越来越离不开昂贵的（医疗）技术，因为他们没有先进的医疗条 件的介入就无法生存。intervention介入，调节。interference冲突，干涉，妨碍。interruption中断；干扰。 interaction交互作用，交感，互动。故选C。