单项选择题
A．she had never flown before B．she had a fear of being in high places C．she hadn' t made proper preparations. D．she was naturally timid
A．With her arms folded. B．With her seat belt undone. C．Holding tight to her seat belt. D．Holding on to part of the seat.
A．a legend handed down from the past B．a matter that is hidden or secret C．a question difficult to answer D．a problem not yet solved