【题目】The serious expression of the captain kept his crew _________.
A.in the distanceB.from a distanceC.in a distanceD.at a distance
在线课程【答案】D
【解析】
考查介词短语辨析。句意：船长严肃的表情使船员和他保持一定距离。keep sb at a distance使…保持一段距离，in the distance在远处，from a distance从远处，C项是错误的词组，选D。