用三组不同的关联词，把下面的两个分句连接起来，写在下面的横线上。
    “中国人民下定决心”，“修好京张铁路”
                                                                                                                                                         
                                                                                                                                                         
                                                                                                                                                        

【考点】改写句子,关联词语

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