Tree
As everybody knows,wood has many uses.It is a kind of very important building material.Wood can be made into desks,chairs,beds and many other things.Fine paper is made of wood,too.Only trees can provide us with enough wood.Trees can also provide us with oxygen and make the air around us fresh.In hot summer trees give us shade and make our surroundings more beautiful.What’s more,trees can stop soil from being washed away by heavy rains.Since trees are so important to us,we should plant more trees.At the same time,many effective measures should be taken to protect forests and prevent trees from being cut down.