问题描述：
为什么选 A ,D .about 表关于什么什么的 不也合情合理
--How amazing it is that astronauts are exploring outer space!
--It’s a challenge,I guess,man against nature.
A.of B.for C.by D.abou
--How amazing it is that astronauts are exploring outer space!
--It’s a challenge,I guess,man against nature.
A.of B.for C.by D.abou
问题解答：
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