单项选择题

A．Because there are always things unexpected.
B．Because passengers may encounter delays.
C．Because there may be a typhoon in summer.
D．Because passengers are negative about the plan.
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单项选择题
A．Free ticket.B．Free phone call.C．Cash reward.D．Seat reservation.
A．Free ticket.
B．Free phone call.
C．Cash reward.
D．Seat reservation.
单项选择题
A．Choosing art as a major takes a risk.B．Mrs. Harris thinks art schools are hard to enter for.C．The entry qualifications of colleges are tough.D．Going to art schools requires 3 A s and 2 O s.
A．Choosing art as a major takes a risk.
B．Mrs. Harris thinks art schools are hard to enter for.
C．The entry qualifications of colleges are tough.
D．Going to art schools requires 3 A"s and 2 O"s.
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