题目内容
15．-What's this？-It's __ apple． apple is red．
| A． | an； An | B． | a； The | C． | an； The |
分析 -这是什么？
-它是一个苹果．这个苹果是红色的．
解答 答案：C
此题考查冠词的用法．结合语境，根据It's __ apple可知apple是首次在句中出现，是指一个苹果，表泛指，所以第一个空用a或an；由于apple是以元音音素开头的单词，所以用an；根据apple is red可知apple再次出现，是指上文出现的这个apple，表特指，所以用定冠词the．综合起来，故选C．
点评 冠词类的题目一定要结合语境去理解，表泛指用a或an，表特指用the；并注意细节，尤其是a和an的选择．
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