练习材料:
Lesson88 Trapped in a mine
Six men have been trapped in a mine for seventeen hours.
If they are not brought to the surface soon they may lose their lives.
However,
rescue operations are proving difficult.
If explosives are used,
vibrations will cause the roof of the mine to collapse.
Rescue workers are therefore drilling a hole on the north side of the mine.
They intend to bring the men up in a special capsule.
If there had not been a hard layer of rock beneath the soil,
they would have completed the job in a few hours.
As it is,
they have been drilling for sixteen hours and they still have a long way to go.
Meanwhile,
a microphone, which was lowered into the mine two hours ago,
has enabled the men to keep in touch with the closest relatives.
Though they are running out of food and drink,
the men are cheerful and confident that they will soon get out.
They have been told that rescue operations are progressing smoothly.
If they knew how difficult it was to drill through the hard rock,
they would lose heart.
应用配置：L0+L4
知识笔记：trapped/træpt surface/sɜːfɪs explosives/ɪksˈpləʊsɪvz vibrations /vaɪˈbreɪʃənz collapse/kəˈlæps drilling/drɪlɪŋ capsule/kæpsjuːl layer/leɪər beneath/bɪˈniːθ cheerful/ʧɪəfʊl smoothly/smuːðli
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