—The Mars-500 test will take about520 days. —____

题目：

—The Mars-500 test will take about520 days.
—__________ I hope it goes well.

A、It’s apleasure.

B、Good luck!

C、That’sOK.

D、Congratulations!

【答案解析】显示答案解析

这里显示答案和解析