题目内容
15．It's reported that customers could start using their phones to buy ______coffee in some stores，which is______first pay-by-phone practice in the USA．（ ）| A． | a；the | B． | 不填；不填 | C． | a；不填 | D． | the；the |
分析 据报道在一些商场顾客开始用手机来买一杯咖啡，这是手机支付在美国的第一次实际应用．
解答 答案：A 题干中a coffee一杯咖啡，相当于a cup of coffee；the first第一次，序数词要和定冠词连用．故选A．
点评 冠词是一种虚词，本身不能独立使用，只能放在名词前帮助说明名词所指的人或事物，它是英语词性中最小的一类，只有三个，一种是不定冠词a，an；一种是定冠词the．此外也有些特定场合不用冠词，即通常所称的零冠词．不定冠词表示泛指，定冠词表示特指．
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