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　　Twenty-six years ago， Yossi went deep into the Amazon jungle and got lost for three weeks． He lost a lot of weight as the result of hunger and disease (疾病)． However， he luckily got out of the jungle and wrote a book Jungle about his story years later． The question remains — how did he survive (幸存)？

　　Yossi had always dreamed of exploring (探险) the heart of the Amazon jungle． He met and became good friends with Marcus，Kari，and Kevin．They set off together．

　　23    At the beginning，that seemed like a good idea so they built the boat excitedly and started downriver． However， on their journey， Kari suddenly refused to continue．The men then separated and moved on in pairs．

　　Yossi and Kevin continued on the boat． Near a waterfall，they lost control of their boat and were thrown into the river．　 24   Yossi then spent four days trying to get back upriver to find his friend but failed． During this time，Kevin was saved by some fishermen．He quickly went to the town and asked for help from the local people．

　　Deep in the forest，Yossi climbed around，lost and alone．　 25 　As the days passed，not only did Yossi run out of food，but he also realized his foot was starting to rot (腐烂) away．

　　Yossi wanted to give up many times．One day， as he was cleaning a fresh wound on his foot，Yossi heard the sound of a boat engine． He tried his best to get to the river bank．　 26  　 Yossi wanted to shout out but was too tired to do so． How disappointed  he was when he saw the search  party turning around and away from him． Yossi tried to run forward but fell into the water．The noise caught Kevin's attention and Yossi was finally saved．