问题描述：
Environment-friendly Olympics requires Beijing to improve its environment, _______ turning it into an ecology-friendly city.
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考点提示：副词,副词的比较级,疑问副词,连接副词
最佳答案： | A |
| 略 |
Environment-friendly Olympics requires Beijing to improve its environment, _______ turning it into a
Environment-friendly Olympics requires Beijing to improve its environment, _______ turning it into a
最佳答案： 