题目内容

__________ ! There's a train coming,

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阅读下列短文,回答 47~50 题:
第 47 题 In which season do we have most birds to stay with us?

下列地理现象与其产生原因对应正确的是()

下列关于南方地区整治国土、改造自然的重要措施中,正确的足()

How far do birds usually travel from their summer homes to their winter ones?

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