The biggest whale is _______ blue whale, which grows to be about 29 meters long—the height of______ 9-story building. A.the; theB.a; aC.a; theD.the; a
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D解析试题分析：句意：最大的鲸是蓝鲸，它能长到大约29米长---它是9层楼的高度。the表示特指这种鲸；a表示泛指。故选D。考点：考查冠词的用法。点评：本题难度适中。冠词是高中学生必须掌握的知识点，虽然在初中就提到冠词，由于冠词的用法太多，做题时必须根据不同的语境来确定用哪一个冠词。冠词在固定短语中的考查也是近几年的热点。即学即练：It is generally accepted that________boy must learn to stand up and fight like________man.A. the; the B. a; a C. a; the D. the; a解析：B。