【题目】用and或but连接句子：He spent about 21 hours in space. He made a video.
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【答案】He spent about 21 hours in space and he made a video.
【解析】
句意：他在太空中呆了大约21个小时。他拍了一段录像。前后两个句子之间是顺承关系，用and连接，故答案为He spent about 21 hours in space and he made a video.
