阅读短文，根据所读内容在短文后图表中的空格里填入一个恰当的单词Trees should be pruned(修剪)when it is necessary. A good gard

阅读短文，根据所读内容在短文后图表中的空格里填入一个恰当的单词
Trees should be pruned(修剪)when it is necessary. A good gardener will cut away the overgrown and unwanted branches(树枝). They can make the trees more beautiful and healthier. But sometimes we’d better leave the trees to grow in their own way. Because the inexperienced gardeners will damage(毁坏) the trees.
First, pruning may be done to make sure that trees in good shape or size. Maybe people want to get a tree of the right height and at the same time to help the growth of small side branches. Then people can make the tree’s appearance thick or give it a special shape.
Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead branches. The health of a tree may be encouraged by removing branches that are blocking up (封闭)the center and so stopping the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy chance for disease, but the wound will heal(愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is in danger. Every gardener should try to reduce that danger of death as soon as possible. It is important to make the area, which has been pruned, smooth and clean, because healing will be slowed down by roughness(粗糙). You should allow the cut surface to dry for a few hours and then pain it with one of the special materials. Pruning is usually done in winter, because you can see the shape of the tree clearly and also it is very unlikely(未必的) that the cuts you make will bleed. If this happens, it is impossible to paint them properly(合适地).
Pruning trees
A good gardener prunes a tree when it is 【小题1】
【小题2】 for pruning trees
First, make the trees in 【小题3】 shape or size.
Second, make the trees 【小题4】
One 【小题5】 of pruning trees.
An open wound 【小题6】 easy 【小题7】 for disease.
Reduce the danger of the tree’s death
Make the wound 【小题8】 and clean.
The 【小题9】 of the death of a tree
Paint the wound 【小题10】 it dries.
necessary

(答案→)necessary 解析：这篇短文主要讲述了为什么要修剪树木的原因及修剪树木应该注意的问题，应该如何降低树木死亡的危险等问题。【小题1】根据第一段Trees should be pruned(修剪)when it is necessary.描述,可知此处指的是,一个好的园丁会在必要的时候修剪一棵树.根据填形容词necessary,必要的.【小题2】根据右栏内容,可知此处指的是修剪一棵树的原因.故填复数名词Reasons,原因.【小题3】根据第二段First, pruning may be done to make sure that trees in good shape or size.描述,可知填good,好的,不错的.【小题4】根据第三段Secondly, pruning may be done to make the tree healthier.描述,可知填healthier,更健康的.【小题5】根据右栏内容,可知此处指的是修剪树木的结果,故填result,结果.【小题6】根据第四段One result of pruning is that an open wound is left on the tree and this provides an easy chance for disease, but the wound will heal(愈合). 描述,可知填provides,提供.【小题7】根据第四段One result of pruning is that an open wound is left on the tree and this provides an easy chance for disease, but the wound will heal(愈合). 描述,可知填chance,机会.【小题8】根据最后一段Every gardener should try to reduce that danger of death as soon as possible. It is important to make the area, which has been pruned, smooth and clean,描述,可知为了减少树木死亡的危险,我们应尽量让伤口光滑干净.故填smooth,光滑的.【小题9】根据右栏内容,可知此处指的是树木死亡的危险.故填名词danger,危险.【小题10】根据最后一段You should allow the cut surface to dry for a few hours and then pain it with one of the special materials.描述,可知填after,在……之后.

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