题目内容：
阅读以下材料，回答题：
According to the passage, the U.S. is sometimes called a "consumer economy" because __________.
参考答案：
答案解析：
单选题：阅读以下材料，回答题：According to the passage, the U.S. is sometimes c
- 题目分类：英语四级
- 题目类型：单选题
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According to the passage, the U.S. is sometimes called a "consumer economy" because __________.