Trees play an important role in our environment.For a start，they make air（1） 　 　（更干净的）for us to breathe.The older a tree is，the more important it is to us.Why not look at ancient trees（2） 　 　（仔 细地）around you and find out more？

For the past （3） 　 （十五）years，a charity called the Woodland Trust has been recording ancient trees in the country.It has created a database （数据库）about these tree.

Since the database was set up，the Woodland Trust has（4）    　（添加）over 180，000 trees，but it believes there are many more to be found.It's hoped that all（5） 　 　（成员）of the public will help to locate them ﹣ including you.

You can take an（6） 　 　（积极 的）part in the Woodland Trust's project.Perhaps when you next go for a walk with your family，you can examine the trees you pass to see

（7） 　 　（它的）age.If you find one that you think could be very old，record（8） 　 　（确切地）where it is using an online map.If you want to record the tree，you should take a photo.Don't（9） 　 　（忘记）to make sure you are allowed to examine it closely if the tree isn't on public land.

"Ancient trees are as much a part of our heritage （遗产）as works of（10） 　 　 （艺术），"explains Jeremy Evans of the Woodland Trust. "But they don't get the same protection.The good news is，you don't have to be a tree expert to take part".