2014年6月份的英语四六级考试已经落下帷幕，等在我们眼前的是12月份的四六级考试。考完试的同学不要忘记继续关注考试吧四六级频道，我们会在第一时间发布考试成绩查询信息。英语四级仔细阅读篇幅较短、题型相对容易，考生容易拿分，所以对这一部分的复习一定不能松懈，尽管距离考试还有几个月的时间，但是备考是一个漫长的过程，一定不要心存幻想，等着时间不够了再来着手复习，要有未雨绸缪的思想来面对四六级考试，所以从现在起考生就要坚持练习，下面是一篇四级阅读练习，快来练练吧。

　　Trees should only be pruned when there is a good and clear reason for doing so and , fortunately,the number of such reasons is small. Pruning involves the cutting away of obergrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.

　　First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseaed or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.

　　One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but itis a wound that will heal. Often there is a race between the healing and the desease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurs and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts yu make will bleed. If this does happen,it is, of course,impossible to paint them properly.

　　1.Pruning should be done to ______.

　　a.make the tree grow taller

　　b.improve the shape of the tree

　　c.get rid of the small branches

　　d.make the small branches thicker

　　2.Trees become unhealthy if the gardener ______.

　　a.allows too many branches to grow in the middle

　　b.does not protect them from wind

　　c.forces them to grow too quickly

　　d.damages some of the small side branches

　　3.Why is a special substance painted on the tree?

　　a.To make a wound smooth

　　b.To prevent disease entering a wound

　　c.To cover a rough surface

　　d.To help a wound to dry

　　4.A good gardener prunes a tree______.

　　a.at intervals throughout the year

　　b.as quickly as possible

　　c.occasionally when necessary

　　d.regular every winter

　　5.What was the author's purpose when writing this passage?

　　a.To give pratical instruction for pruning a tree.

　　b.To give a general description of pruning

　　c.To explain how trees develop diseases

　　d.To discuss different methods of pruning.

　　答案：babca

　　以上四级阅读练习题，大家可以在放松的同时加以练习，考试虽然还在几个月后，但是现在起慢慢进入复习状态，一点点积累才是最有效果的复习。

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