【题目】Facial recognition technology is working well at tourist attractions around China, the time people spend standing in lines at entries or security check.
A. to reduceB. reduced
C. having reducedD. reducing
在线课程【答案】D
【解析】
考查现在分词做结果状语。句意：人脸识别技术在中国各地的旅游景点运行良好，减少了人们在入口处或安检处排队的时间。此处是现在分词最自然的结果状语，故答案为D。