大学英语四级阅读理解试题及答案（四）十六

大学英语四级阅读理解试题及答案(四)

大学英语四级阅读理解试

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题及答案（四） 十六

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Trees only be when there is a good and clear for doing so and , ,the of such is small. the away of and , and the can be by the that more from doing it than from the tree to grow in its own way.

First,may be done to make sure that trees have a shape or size。 The may be to get a tree of the right英语四级阅读理解,and at the same time to help the of small side which will its or give it a shape。英语四级阅读理解, may be done to make the tree 。 You may cut or dead wood, or that are each other and thus cause 。 The of a tree may be by that are up the and so the free of air。 #

One of is that an open wound is left on the tree and this an easy entry for , but itis a wound that will heal。 Often there is a race the and the as to the tree will live or die, so that there is a when the tree is at risk。 It be the aim of every to which has been and clean, for will be down by 。 You allow the cut to dry for a few hurs and then paint it with one of the from shops for this 。 #

is from the and also it is very that the cuts yu make will bleed。 If this does ,it is, of , to paint them 。 #

1. be done to . #

a.make the tree grow #

b. the shape of the tree

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c.get rid of the small