:Language points for reading
1. rare: 稀罕的, 稀有的
a rare disease 罕见的病
2. valuable 贵重的, 有价值的
Gold is valuable because it is a scarce metal.
3. survive vt &vi 幸存
Fortunately he survived the traffic accident.
Camels can survive for many days with no water.
survivor (n.) 幸存者
survival (n.) 幸存
The helicopter picked up all the ________.
They prayed for the _______ of the sailors.
