真的到了宇宙要人类灭亡的时候,人类能不能救自己呢?人类能不能凭智慧逃过一劫呢?有科学依据的最好,没有的天方夜谈也行.

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/09 01:09:20
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