They made detailed investigations to ______ themselves with the needs of the rural market.
A、
adhere
B、
acknowledge
C、
acquaint
D、
activate
【正确答案】
C
【答案解析】
固定搭配。acquaint sb. /oneself with意为“熟悉或了解某事物”，为固定用法。故答案为C。
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