The service operates 36 libraries throughout the country, while six _____ libraries specially serve the countryside.
【正确答案】
A
【答案解析】解析:考查形容词辨析。mobile意为“流动的,活动的”,符合题意,如mobile phone(移动电话)。drifting是动词drift(漂流,漂泊)的现在分词;shifting是动词shift(转移,转换)的现在分词;rotating是动词rotate(转动,旋转)的现在分词。