问答题

1.近年来,本市空气污染情况越来越严重 2.你认为造成空气污染的主要污染源在哪里应该采取哪些措施 3.呼吁所有市民积极行动起来,治理空气污染

【参考答案】

October 23, 2005Dear Mr. Major, As a citizen of our city, I ......

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