Forests are the lungs of the earth．Without them，it cannot breathe．It needs its forests to remove carbon dioxide from the air and to make oxygen．In many countries，such as New Zealand，Canada，and Brazil，forests were cut down to（1） （提供）wood to build houses．Cutting down trees is（2）h to human beings，animals and plants． Many young volunteers around the world are working in their holidays to plant new trees to replace them．
These young men and women（3）f many difficulties when they plant new tees．The weather may be very hot and dry or may be very cold and wet．Tree（4） （种植者）are changing the world．They plant different types of trees so that birds and animals can live in the forests．They（5）b that in 50 years their little trees will become beautiful forests．
he， kill， scared， silly， lie， courage， hear， against， fight， strong |
One sunny afternoon， a young deer and an old deer were（1） under a tree in the forest． Suddenly， in the distance， they （2） some sounds of dogs' barking．
The old deer stood up quickly． He felt nervous and （3） ． He said to the young deer， "Be quick! It's time to find a place to hide in． The barking dogs are fierce（凶猛的） and they will （4） us． "
The young deer laughed and said， "Why should we hide from the dogs？ We are bigger and（5） than them． We can toss（扔）them aside with our big antlers（角）． We should fight with them bravely． "
The old deer admired the （6） of the young deer， but he did not believe the young． "We'd better run away now．" said the old deer．
The young deer refused to run away． He decided to fight （7） the dogs． As the dogs ran to （8） ， he put down his antlers and wanted to toss them aside， But he didn't win the （9） because there were too many dogs． He was killed by the dogs in the end．
The young deer lost his life because he didn't know his strength and weakness． We can learn a lesson from the story． Don't be like the （10） young deer when we are in danger． We should know our strength and weakness．
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