题目内容
根据汉语补全句子
________(据我所知), people began to use balloons as the flying machine in the 18th century.
答案：
解析：
解析：
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As far as I know |
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根据汉语补全句子
________(据我所知), people began to use balloons as the flying machine in the 18th century.
|
As far as I know |
出彩同步大试卷系列答案