题目内容：
What does the underlined word "imbalance" in Paragraph 3 refer to?
参考答案：
答案解析：
单选题：What does the underlined word "imbalance" in Paragraph 3 ref
- 题目分类：英语
- 题目类型：单选题
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请在52处填写答案。（ ）
根据以下材料，回答题：请在36处填写答案。（ ）
根据以下材料，回答题：请在36处填写答案。（ ）
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