单选题
1分
Like no previous technology, mobile technology has spread______an unprecedented pace in the last few...
Like no previous technology, mobile technology has spread______an unprecedented pace in the last few years.
参考答案: A
参考解析: 本题考查介词用法辨析。题目意为“与之前的技术不同,移动技术在过去几年中以前所未有的速度发展。”根据题干,at a pace为固定搭配,意为“以……的速度”,因此A选项正确。