单选题 He had a (n) ______ habit of emptying ash trays out of his upstairs window on to our doorsteps.

【正确答案】 D
【答案解析】(offensive讨厌的,令人作呕的)。句意为:他有一个让人厌恶的习惯,把烟灰从楼上的窗户上倒到我们的台阶上。A.uneducated没受教育的,文盲的;B. persuasive有说服力的;C.uncultivated野蛮的,未开化的。