题目内容：
A. socialB. big
C. economic
D. current
参考答案：
答案解析：
单选题：A. socialB. big C. economicD. current
- 题目分类：综合类
- 题目类型：单选题
- 查看权限：VIP
B. big
C. economic
D. current
B. big
C. economic
D. current
请在第（49）处填上最佳答案。
请在第（49）处填上最佳答案。
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Paragraph 5 __________．
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Every year each household in the United States discards appr
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New York is cleaner and safer than before.A．Right B．WrongC．N
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