37. The Louisiana Purchase of 1803 increased the territory of the United States by approximate 846,000 square miles, practically doubling the area of the United States.
答案：B. approximate: approximately
分析：approximately 副词修饰句子
可是我觉得approximate adj修饰square miles 名词没错啊？，且approximately在by 介词词组中和句子有什么关系啊？
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发表于 2005-7-23 17:46:00
