国家开放大学 / 理工英语4
— Space travel must be very very expensive.
— . The cost of a seat on the Virgin craft is $ 250,000.
A. That’s not true.
B. Of course.
C. Why do you think so?
— . The cost of a seat on the Virgin craft is $ 250,000.
A. That’s not true.
B. Of course.
C. Why do you think so?
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