问题
单项选择题
They made detailed investigations to ______ themselves with the needs of the rural market.
A．adhere
B．acknowledge
C．acquaint
D．activate
答案
参考答案：C
解析： adhere“粘附，坚持”；acknowledge“承认，报偿”；acquaint“使熟知，介绍，通知”；acquaint sb/onself with“使熟悉或了解某事物”；activate“刺激，使活动”。答案是C。