题文
---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．about |
推荐试卷
---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．about |
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