单选题 I wanted to pay for the coffee, but I found that all I had was a couple of ______ coins.
【正确答案】 A
【答案解析】[解析] 本题考查形容词词义辨析。worthless意为“无价值的,不值钱的”;priceless意为“无价的,极贵重的”;invaluable意为“无价的,非常宝贵的”;inexpensive意为“便宜的,廉价的”。根据句意,故选A。