【题目】They seem to care little about others, shut down communication and ________ their own words.
A. subject to B. subscribe to
C. bring in D. indulge in
在线课程【答案】D
【解析】
考查动词短语辨析。A. subject to易受……影响；让步于……；B. subscribe to订阅；赞成；C. bring in引进，赚钱；D. indulge in沉溺于，纵情于；句意：他们似乎一点也不在意他人，封闭了与他人的交流，沉溺于他们自己的世界。根据句意可知D项正确。