问题
选择题
| The old couple _____ for fifty years, so they have decided to celebrate their Golden Wedding. |
| A. have been married B. have married C. married D. got married |
答案
答案：A
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| The old couple _____ for fifty years, so they have decided to celebrate their Golden Wedding. |
| A. have been married B. have married C. married D. got married |
答案：A
2AB（气），达到平衡的标志是