短听力练习-8-17听录音，并选择正确选项
A. Gears can not be retracted.
B. Gears were jammed.
C. Tyres blew out.
D. Gears blew out.
短听力练习-8-18听录音，并选择正确选项
A. Port engine shut down due to bird strike.
B. Starboard engine shut down due to overheating.
C. Two seagulls broke up the windscreen.
D. Both engines shut down.
短听力练习-8-19听录音，并选择正确选项
A. To restart the engine.
B. To descend to 4,500 m.
C. To divert to the alternate.
D. To maintain the flight level.
短听力练习-8-20听录音，并选择正确选项
A. One passenger on board is in danger.
B. One passenger on board is injured.
C. One passenger on board has a heart attack.
D. There is an unruly passenger on board.
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