专升本英语（阅读理解）模拟试卷6
阅读理解
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 overgrown 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.
Firstly, 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 out diseased or dead wood, or branches that are rubbing against each other and thus causing wounds. The health of a tree may be encouraged by removing branches that are blocking up the center 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 it is a wound that will heal. 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 at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is essential to make the area which has been pruned smooth and clear, for healing will be slowed down by roughness.
You should allow the cut surface to dry for a few hours and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually done in winter, for then you can see the shape of the tree clearly without interference from the leaves and it is, too, very unlikely that the cuts you make will bleed, if this does happen, it is, of course, impossible to paint them properly.
1.Pruning is sometimes done to________.(C)
A. allow the tree to grow in its own way
B. get rid of small branches
C. improve the shape of the tree
D. let the tree grow taller
解析：文章第二段第一句话Firstly，pruning may be done to make sure that trees have a desired shape or size．可知C是正确答案。
2.Trees will become unhealthy when________.(A)
A. too many branches grow in the middle
B. branches in the middle are cut away
C. small side branches become thick
D. overgrown branches are removed
解析：第二段结尾The health of a tree may be encouraged by removing branches that are blocking up the center and 80 preventing the free movement of air．文中的center与选项中in the middle同义替换。
3.A special substance is painted on the cut surface of the tree________.(B)
A. to prevent the bleeding of the liquid
B. to prevent disease from entering the wound
C. to help the wound dry quickly
D. to remedy the roughness of the wound
解析：文章第四段开头You should allow the cut surface to dry for a fear hours and then paint it with one of the substances available from garden shops produced especially for this purpose．此题的关键是读出for this purpose指代的是什么。结合第三段的内容可知this purpose指的就是prevent diseased故选B。
4.A good gardener prunes a tree_____ .(C)
A. at intervals throughout the year
B. regularly every winter
C. only when necessary
D. once every year
解析：文章开头Trees should only be pruned when there is a good a
本文档预览：3500字符，共15053字符，源文件无水印，下载后包含无答案版和有答案版，查看完整word版点下载
