Question

【题目】He________ a glass of milk just now．He was very careless．

A. knocked at B. knocked on C. knocked over D. knocked off

Answer 1

【答案】C

【解析】句意：他刚才打翻了一杯牛奶，他很粗心。考查动词短语辨析题。A. knocked at敲（门）；B. knocked on敲（门）；C. knocked over碰翻；D. knocked off撞倒。根据句意和语境，可知ABD三项意思都与句意不合，故选C。