问题
选择题
—The Mars-500 test will take about 520 days.
—________ I hope it goes well. [ ]
A. It's a pleasure.
B. Good luck!
C. That's OK.
D. Congratulations!
答案
答案：B
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—The Mars-500 test will take about 520 days.
—________ I hope it goes well. [ ]
A. It's a pleasure.
B. Good luck!
C. That's OK.
D. Congratulations!
答案：B