单选题
I bought this fifteenth-century watch at a quite ______ price.
【正确答案】
B
【答案解析】expensive：adj. 费钱的；昂贵的：It is expensive to travel by plane. 坐飞机旅行很费钱。Costly：adj. (1) 价值高的；贵重的：The ring was very costly. 这枚戒指价钱很贵。(2) 昂贵的；代价高的：the costliest war in history历史上代价最高的战争。