单选题 They made detailed investigations to ______ themselves with the needs of the rural market.无

【正确答案】 C

【答案解析】句意：他们进行了详细的调查来了解农村市场的需要。 acquaint sb./oneself with使熟悉或了解某事物。 adhere坚持；依附。 activate刺激；使活动。