单项选择题

Conversation Two Which statement below is correct

A．A few minutes is enough for tourists because of weightlessness．
B．The cost for the trip is acceptable to the general public．
C．The duration of the trip is expected to be increased．

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多项选择题

Did Maria Reiche believe the Nazca Lines have something to do with outer－space visitors What was her reason

单项选择题

Who will be the potential tourists

A．The general public．
B．Those wanting rest and recreation．
C．Risk－takers．